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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,240 --> 00:00:02,000 You may think you need to burn a lot of 2 00:00:02,000 --> 00:00:04,880 money on a big telescope to take photos 3 00:00:04,880 --> 00:00:07,120 like this. 4 00:00:07,120 --> 00:00:09,440 Think again, because I took that photo 5 00:00:09,440 --> 00:00:11,679 using this very exact setup. A simple 6 00:00:11,679 --> 00:00:13,679 tripod and a really cheap camera and 7 00:00:13,679 --> 00:00:16,400 lens combo that costs about $200. And 8 00:00:16,400 --> 00:00:18,000 I'm going to show you every step I did 9 00:00:18,000 --> 00:00:19,680 to do [music] that. 2 and a half million 10 00:00:19,680 --> 00:00:21,520 lightyears away is the Andromeda galaxy, 11 00:00:21,520 --> 00:00:23,359 the most distant object visible to the 12 00:00:23,359 --> 00:00:25,359 naked eye. This galaxy is a classic 13 00:00:25,359 --> 00:00:27,840 example of a spiral galaxy. Here we can 14 00:00:27,840 --> 00:00:30,240 see the companion galaxies. Now, this is 15 00:00:30,240 --> 00:00:32,480 quite large in the sky and spans the 16 00:00:32,480 --> 00:00:35,120 width of about six full moons. Before we 17 00:00:35,120 --> 00:00:37,040 continue, do you like astrophotography 18 00:00:37,040 --> 00:00:39,040 tutorials and want to be featured here 19 00:00:39,040 --> 00:00:41,680 on my YouTube channel? If yes, feel free 20 00:00:41,680 --> 00:00:43,440 to tag my Instagram account on your 21 00:00:43,440 --> 00:00:45,360 posts. I would love to take a look and 22 00:00:45,360 --> 00:00:47,280 see how my videos are helping others. 23 00:00:47,280 --> 00:00:48,800 Let's get back to the video and first 24 00:00:48,800 --> 00:00:50,719 talk about the gear. The gear I use for 25 00:00:50,719 --> 00:00:52,879 this project [music] is a simple tripod 26 00:00:52,879 --> 00:00:55,920 plus a Canon Rebel T6 paired with a 50 27 00:00:55,920 --> 00:00:58,800 mm lens or the nifty50 as we call it. I 28 00:00:58,800 --> 00:01:00,640 like to use this because it's a fast 29 00:01:00,640 --> 00:01:03,640 lens. 30 00:01:05,760 --> 00:01:07,520 Well, fast in a sense that it has a 31 00:01:07,520 --> 00:01:10,479 large maximum aperture or a low f-stop. 32 00:01:10,479 --> 00:01:13,119 And coming in at about $60 used, this 33 00:01:13,119 --> 00:01:15,200 lens is a great budget lens for 34 00:01:15,200 --> 00:01:17,520 astrophotography, which is why I like to 35 00:01:17,520 --> 00:01:20,000 call it the thrifty50. Now, you don't 36 00:01:20,000 --> 00:01:21,680 have to use a DSLR. You can use a 37 00:01:21,680 --> 00:01:23,600 mirrorless, and you don't have to use 38 00:01:23,600 --> 00:01:26,080 the nifty50 lens. In short, you'll need 39 00:01:26,080 --> 00:01:28,159 a lens with a low f-stop, a digital 40 00:01:28,159 --> 00:01:30,400 camera, and a tripod. Let's talk next 41 00:01:30,400 --> 00:01:32,320 about the location. Remember how I said 42 00:01:32,320 --> 00:01:34,321 the Andromeda galaxy is really bright? 43 00:01:34,321 --> 00:01:35,840 [music] That's the best part because 44 00:01:35,840 --> 00:01:38,000 unlike other deep sky objects, you don't 45 00:01:38,000 --> 00:01:39,840 have to go to a dark sky site to image 46 00:01:39,840 --> 00:01:42,960 it. If you can, [music] it's ideal, but 47 00:01:42,960 --> 00:01:44,880 not necessary. In fact, I shot this 48 00:01:44,880 --> 00:01:47,280 photo in Bortalass 5 skies near my 49 00:01:47,280 --> 00:01:48,960 house. To figure out what the light 50 00:01:48,960 --> 00:01:50,960 pollution looks like in your area, go to 51 00:01:50,960 --> 00:01:52,479 lightolutionmap.app. 52 00:01:52,479 --> 00:01:54,240 Here you'll find a website where you can 53 00:01:54,240 --> 00:01:56,479 see a map showing areas of the greatest 54 00:01:56,479 --> 00:01:58,640 light pollution all the way down to the 55 00:01:58,640 --> 00:02:01,360 areas of the lowest light pollution. To 56 00:02:01,360 --> 00:02:02,640 figure out what the light pollution 57 00:02:02,640 --> 00:02:04,880 looks like in your area, go to the top 58 00:02:04,880 --> 00:02:07,280 right corner and click the search icon. 59 00:02:07,280 --> 00:02:09,280 Here you'll enter your address and 60 00:02:09,280 --> 00:02:11,280 you'll be able to see the specifics on 61 00:02:11,280 --> 00:02:13,680 the light pollution in your area. Now, 62 00:02:13,680 --> 00:02:15,520 unfortunately, light pollution does 63 00:02:15,520 --> 00:02:17,440 change over time, but one of the nice 64 00:02:17,440 --> 00:02:19,040 features about this particular [music] 65 00:02:19,040 --> 00:02:20,959 website is in addition to seeing the 66 00:02:20,959 --> 00:02:22,959 light pollution, you'll also be able to 67 00:02:22,959 --> 00:02:24,400 see the light pollution trend [music] 68 00:02:24,400 --> 00:02:26,480 over time. You'll also want to avoid 69 00:02:26,480 --> 00:02:28,720 other sources of light pollution such as 70 00:02:28,720 --> 00:02:30,800 street lamps and security lights as 71 00:02:30,800 --> 00:02:33,120 these can wreak havoc on your images. 72 00:02:33,120 --> 00:02:35,280 Let's talk next about the time. But 73 00:02:35,280 --> 00:02:37,519 first, where exactly is the Andromeda 74 00:02:37,519 --> 00:02:39,680 galaxy in the night sky? In the northern 75 00:02:39,680 --> 00:02:42,160 sky is a constellation called Cassiopia. 76 00:02:42,160 --> 00:02:44,239 It looks like a W or an M. [music] To 77 00:02:44,239 --> 00:02:46,160 find Andromeda, start with this bright 78 00:02:46,160 --> 00:02:48,400 star here, Shedar, and use the other two 79 00:02:48,400 --> 00:02:50,080 stars to draw [music] an arrow. This 80 00:02:50,080 --> 00:02:51,519 will point in the general direction of 81 00:02:51,519 --> 00:02:53,519 the Andromeda galaxy. Both of these 82 00:02:53,519 --> 00:02:55,680 rotate counterclockwise around the north 83 00:02:55,680 --> 00:02:58,160 star, Polaris. In August, as the evening 84 00:02:58,160 --> 00:02:59,680 begins, you will see these in the 85 00:02:59,680 --> 00:03:01,200 northeastern sky to the right of 86 00:03:01,200 --> 00:03:03,360 Polaris. As fall progresses into winter 87 00:03:03,360 --> 00:03:05,519 and then into spring, Cassiopia and the 88 00:03:05,519 --> 00:03:07,440 Andromeda galaxy will rotate to the 89 00:03:07,440 --> 00:03:08,959 other side of Polaris in the 90 00:03:08,959 --> 00:03:11,040 northwestern sky, which means the 91 00:03:11,040 --> 00:03:13,120 Andromeda galaxy is visible many months 92 00:03:13,120 --> 00:03:14,720 during the year in the mid-n northern 93 00:03:14,720 --> 00:03:16,560 latitudes. You just might have to wake 94 00:03:16,560 --> 00:03:18,319 up really early to see it. In the mid-n 95 00:03:18,319 --> 00:03:20,239 northern latitudes, Polaris is higher in 96 00:03:20,239 --> 00:03:22,400 the sky, so the Andromeda galaxy will be 97 00:03:22,400 --> 00:03:23,920 as well. However, in the southern 98 00:03:23,920 --> 00:03:25,920 latitudes, Polaris is not visible. So, 99 00:03:25,920 --> 00:03:27,360 the Andromeda galaxy will be 100 00:03:27,360 --> 00:03:29,440 significantly lower in the sky. Whether 101 00:03:29,440 --> 00:03:30,720 you're in the northern or southern 102 00:03:30,720 --> 00:03:32,640 hemisphere, August through November is 103 00:03:32,640 --> 00:03:34,400 the best time to photograph this. You'll 104 00:03:34,400 --> 00:03:36,239 also want to wait for a new moon, which 105 00:03:36,239 --> 00:03:38,480 is when the moon is least illuminated. 106 00:03:38,480 --> 00:03:40,319 Also, try to photograph the galaxy when 107 00:03:40,319 --> 00:03:41,599 it is at its highest in [music] the 108 00:03:41,599 --> 00:03:43,680 night sky. Let's talk next about your 109 00:03:43,680 --> 00:03:45,599 camera settings. First, switch your 110 00:03:45,599 --> 00:03:47,840 camera to manual mode. Then, turn on 111 00:03:47,840 --> 00:03:50,080 manual focus. To calculate the exposure 112 00:03:50,080 --> 00:03:52,527 length, we'll use the rule of 500, where 113 00:03:52,527 --> 00:03:54,640 [music] we take 500 and divide it by two 114 00:03:54,640 --> 00:03:56,799 variables. The first is called crop 115 00:03:56,799 --> 00:03:59,040 factor. that measures the size of your 116 00:03:59,040 --> 00:04:00,720 camera [music] sensor. For full-frame 117 00:04:00,720 --> 00:04:02,879 cameras, it'll be one. And for smaller 118 00:04:02,879 --> 00:04:04,799 sensor cameras like your crop sensors, 119 00:04:04,799 --> 00:04:06,879 it will be greater than one. In my case, 120 00:04:06,879 --> 00:04:09,599 it was 1.6. Then we'll look at focal 121 00:04:09,599 --> 00:04:12,480 length. In my case, it's a 50 mm lens. 122 00:04:12,480 --> 00:04:15,280 So, it will be 50. I then take 500 123 00:04:15,280 --> 00:04:18,400 divided by the product of 1.6 * 50. That 124 00:04:18,400 --> 00:04:20,720 equals about 6.25 seconds. These 125 00:04:20,720 --> 00:04:22,240 exposures could have been longer. The 126 00:04:22,240 --> 00:04:24,080 goal of all of this is to compensate for 127 00:04:24,080 --> 00:04:26,000 the rotation of the Earth and avoid star 128 00:04:26,000 --> 00:04:28,240 trails in your images. The exposure on 129 00:04:28,240 --> 00:04:29,919 the left is too long. The stars are 130 00:04:29,919 --> 00:04:31,759 trailing. The exposure on the right, the 131 00:04:31,759 --> 00:04:33,040 stars are pinpoint, [music] and that's 132 00:04:33,040 --> 00:04:34,800 what we're after. Next, you'll want to 133 00:04:34,800 --> 00:04:37,040 open the aperture as wide as possible. 134 00:04:37,040 --> 00:04:40,080 As far as the ISO, I chose 3200. You may 135 00:04:40,080 --> 00:04:41,919 need to adjust this for light pollution. 136 00:04:41,919 --> 00:04:43,919 You may also want a 2-cond delay on your 137 00:04:43,919 --> 00:04:45,680 camera so your hand is off it while it's 138 00:04:45,680 --> 00:04:48,160 shooting. I also decided to shoot in RAW 139 00:04:48,160 --> 00:04:50,560 and large JPEG. Raw images will be the 140 00:04:50,560 --> 00:04:52,240 ones we use for our final photo, and 141 00:04:52,240 --> 00:04:53,919 JPEG can be used for the computer 142 00:04:53,919 --> 00:04:56,000 preview. This example of a single photo 143 00:04:56,000 --> 00:04:58,000 is a bit underwhelming, but don't worry, 144 00:04:58,000 --> 00:04:59,759 we'll turn it into a masterpiece soon 145 00:04:59,759 --> 00:05:02,479 enough. Next, let's talk about imaging. 146 00:05:02,479 --> 00:05:04,000 Because we're shooting with such a wide 147 00:05:04,000 --> 00:05:06,080 field lens, and because Cassiopia is 148 00:05:06,080 --> 00:05:08,240 such a bright constellation, it won't be 149 00:05:08,240 --> 00:05:10,080 hard for us to find it in a live view of 150 00:05:10,080 --> 00:05:11,759 our camera, [music] even under light 151 00:05:11,759 --> 00:05:13,520 polluted skies. The first thing you'll 152 00:05:13,520 --> 00:05:15,440 want to do is use the digital zoom to 153 00:05:15,440 --> 00:05:17,360 zoom in on a bright star. This is how 154 00:05:17,360 --> 00:05:19,520 we'll achieve focus. Once you're zoomed 155 00:05:19,520 --> 00:05:21,759 in, push your camera lens all the way to 156 00:05:21,759 --> 00:05:24,000 infinity and then slightly back it off. 157 00:05:24,000 --> 00:05:25,680 The goal is to have the star be the 158 00:05:25,680 --> 00:05:27,759 smallest white dot. Purple fringe is 159 00:05:27,759 --> 00:05:30,400 okay. That's expected with cheap lenses. 160 00:05:30,400 --> 00:05:31,919 Then you'll want to zoom out and 161 00:05:31,919 --> 00:05:34,240 refframe Cassiopia to where we can get 162 00:05:34,240 --> 00:05:36,720 Andromeda galaxy in frame. Remember, 163 00:05:36,720 --> 00:05:38,400 move the direction of the imaginary 164 00:05:38,400 --> 00:05:40,720 arrow to find the Andromeda galaxy. 165 00:05:40,720 --> 00:05:42,720 Here's the arrow, and here is where we 166 00:05:42,720 --> 00:05:45,120 can expect to see the Andromeda galaxy. 167 00:05:45,120 --> 00:05:47,280 Let's take a test shot and see what 168 00:05:47,280 --> 00:05:50,919 happens. Here's 169 00:05:52,560 --> 00:05:54,639 Cassiopia on the right and on the left 170 00:05:54,639 --> 00:05:56,960 we can see the core of the Andromeda 171 00:05:56,960 --> 00:05:59,039 galaxy. 172 00:05:59,039 --> 00:06:00,800 Next, center your camera on the 173 00:06:00,800 --> 00:06:02,960 Andromeda galaxy or about to where you 174 00:06:02,960 --> 00:06:05,360 think it is. This may take several tries 175 00:06:05,360 --> 00:06:07,440 and require several test shots. 176 00:06:07,440 --> 00:06:08,960 Eventually, you'll want it looking like 177 00:06:08,960 --> 00:06:12,400 this. After this, you'll take 250 light 178 00:06:12,400 --> 00:06:15,039 frames or photos. Now, you will need to 179 00:06:15,039 --> 00:06:17,280 reenter your camera every 10 to 15 180 00:06:17,280 --> 00:06:18,960 images because of the rotation of the 181 00:06:18,960 --> 00:06:21,120 Earth. An easy way to do this is use the 182 00:06:21,120 --> 00:06:23,440 rectangle to reframe on a bright star. 183 00:06:23,440 --> 00:06:25,120 As long as you keep that reference star 184 00:06:25,120 --> 00:06:27,120 centered between sets, you'll be good. 185 00:06:27,120 --> 00:06:29,039 Now, your camera sensor can be pretty 186 00:06:29,039 --> 00:06:32,560 noisy. Wait, what? That's right. I don't 187 00:06:32,560 --> 00:06:34,160 have to tell you that our technology 188 00:06:34,160 --> 00:06:36,240 today is sometimes less than reliable 189 00:06:36,240 --> 00:06:38,560 and not perfect. Here's a simple process 190 00:06:38,560 --> 00:06:41,039 of an image I captured. And even just a 191 00:06:41,039 --> 00:06:42,800 little bit of it reveals noise and 192 00:06:42,800 --> 00:06:45,440 artifacts. Things like vignetting, 193 00:06:45,440 --> 00:06:48,560 noise, and hot pixels. We can compensate 194 00:06:48,560 --> 00:06:50,560 for these noise and artifacts by taking 195 00:06:50,560 --> 00:06:52,960 three calibration frames. Dark frames, 196 00:06:52,960 --> 00:06:54,720 which capture the thermal noise from the 197 00:06:54,720 --> 00:06:57,039 sensor, bias frames, which capture the 198 00:06:57,039 --> 00:06:59,520 sensor readout noise, and flat frames, 199 00:06:59,520 --> 00:07:01,280 which capture any vignetting or dust 200 00:07:01,280 --> 00:07:03,120 present. Still confused? Think of it 201 00:07:03,120 --> 00:07:04,880 like this. You finally made it to that 202 00:07:04,880 --> 00:07:06,560 scenic overlook and just as you 203 00:07:06,560 --> 00:07:08,160 expected, it happens. 204 00:07:08,160 --> 00:07:10,400 >> Main character 205 00:07:10,400 --> 00:07:10,960 for real. 206 00:07:10,960 --> 00:07:13,199 >> In our astrophotography images, we 207 00:07:13,199 --> 00:07:15,520 expect to see noise and artifacts. Just 208 00:07:15,520 --> 00:07:16,720 like when you're at that scenic 209 00:07:16,720 --> 00:07:18,479 overlooked, you expect to see these 210 00:07:18,479 --> 00:07:20,720 guys. Calibration frames can help to 211 00:07:20,720 --> 00:07:22,400 isolate and identify noise and 212 00:07:22,400 --> 00:07:24,800 artifacts. In short, the calibration 213 00:07:24,800 --> 00:07:26,319 frames allow us to account for the 214 00:07:26,319 --> 00:07:28,479 unwanted distractions in our images. 215 00:07:28,479 --> 00:07:29,680 Now, it may sound a little like 216 00:07:29,680 --> 00:07:32,000 cheating, but it's not. Even NASA uses 217 00:07:32,000 --> 00:07:34,000 calibration frames. So, let's talk about 218 00:07:34,000 --> 00:07:36,080 how to take calibration frames. Take 219 00:07:36,080 --> 00:07:38,160 these after your actual photos so that 220 00:07:38,160 --> 00:07:40,000 the dark frames are taken at the same 221 00:07:40,000 --> 00:07:42,319 temperature as the photos and so you can 222 00:07:42,319 --> 00:07:44,319 keep the same focus. For the dark 223 00:07:44,319 --> 00:07:46,160 frames, you'll first want to replace the 224 00:07:46,160 --> 00:07:48,639 lens cap, turn off the shutter delay, 225 00:07:48,639 --> 00:07:50,960 and then shoot. You'll want to take 226 00:07:50,960 --> 00:07:53,599 about 50 of these. For the bias frames, 227 00:07:53,599 --> 00:07:55,280 you'll set the exposure length to the 228 00:07:55,280 --> 00:07:57,199 shortest possible with the lens cap 229 00:07:57,199 --> 00:08:00,000 still on and shoot about 50 photos. The 230 00:08:00,000 --> 00:08:01,919 flat frames are a bit more involved. 231 00:08:01,919 --> 00:08:03,599 You'll need first a white t-shirt or 232 00:08:03,599 --> 00:08:05,360 paper sheet and an evenly lit 233 00:08:05,360 --> 00:08:08,319 background. What do I mean by that? 234 00:08:08,319 --> 00:08:10,560 No, I don't mean that. [music] 235 00:08:10,560 --> 00:08:12,479 I mean an evenly lit sky or light 236 00:08:12,479 --> 00:08:15,280 source, such as the dusk sky or ceiling. 237 00:08:15,280 --> 00:08:17,280 I used my lights here to evenly light 238 00:08:17,280 --> 00:08:19,280 the ceiling, and it worked best for me. 239 00:08:19,280 --> 00:08:21,199 First, you'll remove your lens cap and 240 00:08:21,199 --> 00:08:23,840 then switch to AV mode. Then, you'll 241 00:08:23,840 --> 00:08:25,280 point the camera vertically at that 242 00:08:25,280 --> 00:08:27,280 light source and place the t-shirt or 243 00:08:27,280 --> 00:08:29,360 paper sheet over the lens, making sure 244 00:08:29,360 --> 00:08:32,399 it's flat. Then you'll take the photos. 245 00:08:32,399 --> 00:08:34,399 Let's rewind that real quick. Take a 246 00:08:34,399 --> 00:08:36,479 look at the histogram. It's about 50% 247 00:08:36,479 --> 00:08:37,919 exposed, [music] and that is what you 248 00:08:37,919 --> 00:08:40,000 want to aim for. Take 30 of these flat 249 00:08:40,000 --> 00:08:42,320 frames. Here is a quick review of the 250 00:08:42,320 --> 00:08:44,159 details for each of these. Please feel 251 00:08:44,159 --> 00:08:45,839 free to stop this video and take a 252 00:08:45,839 --> 00:08:47,760 screenshot at this time so it's easier 253 00:08:47,760 --> 00:08:49,200 for you to remember. After you have 254 00:08:49,200 --> 00:08:50,880 those photos, I'd recommend taking them 255 00:08:50,880 --> 00:08:52,399 off your camera, putting them in your 256 00:08:52,399 --> 00:08:54,000 computer, and organizing them into 257 00:08:54,000 --> 00:08:56,560 folders. It makes things a lot easier. 258 00:08:56,560 --> 00:08:58,959 Let's talk next about stacking. Now, you 259 00:08:58,959 --> 00:09:00,560 may be doing the math and be asking 260 00:09:00,560 --> 00:09:03,040 yourself, "Why on earth did I take all 261 00:09:03,040 --> 00:09:06,240 those photos?" I mean, isn't one photo 262 00:09:06,240 --> 00:09:08,720 good enough? Not quite. See, space 263 00:09:08,720 --> 00:09:10,320 photos have a secret. Even though 264 00:09:10,320 --> 00:09:12,160 they're masquerading as one, they're 265 00:09:12,160 --> 00:09:13,600 really a bunch of photos that have been 266 00:09:13,600 --> 00:09:15,920 combined. They've been combined through 267 00:09:15,920 --> 00:09:18,160 a process called stacking. Get it? Where 268 00:09:18,160 --> 00:09:20,000 you take the individual photos, 269 00:09:20,000 --> 00:09:21,680 integrate them together, and then you 270 00:09:21,680 --> 00:09:23,839 get a finished image. We use the stars 271 00:09:23,839 --> 00:09:25,440 in each of the photos to align the 272 00:09:25,440 --> 00:09:27,839 images. The noise is fairly random 273 00:09:27,839 --> 00:09:29,680 across the photos while the signal is 274 00:09:29,680 --> 00:09:31,920 fairly consistent. So as we integrate 275 00:09:31,920 --> 00:09:34,080 more individual photos into our final 276 00:09:34,080 --> 00:09:35,839 image, we increase what is called the 277 00:09:35,839 --> 00:09:37,839 signal to noise ratio and get a much 278 00:09:37,839 --> 00:09:39,600 cleaner image. What we will do is 279 00:09:39,600 --> 00:09:41,360 integrate the light frames, the dark 280 00:09:41,360 --> 00:09:43,200 frames, the flat frames, and the bias 281 00:09:43,200 --> 00:09:45,760 frames using a free online software 282 00:09:45,760 --> 00:09:48,160 called Deep Sky Stacker. When you open 283 00:09:48,160 --> 00:09:49,839 Deep Sky Stacker, it will look like 284 00:09:49,839 --> 00:09:51,920 this. The first thing we'll do is upload 285 00:09:51,920 --> 00:09:54,000 our light frames. And like I said, 286 00:09:54,000 --> 00:09:56,320 organizing ahead of time really helps. 287 00:09:56,320 --> 00:09:58,240 Go ahead and go to the lights folder and 288 00:09:58,240 --> 00:09:59,680 make sure you're selecting the raw 289 00:09:59,680 --> 00:10:02,000 files. Go ahead and select all those 290 00:10:02,000 --> 00:10:04,080 files and then click open. Now, even 291 00:10:04,080 --> 00:10:05,600 though we've imported these, we need to 292 00:10:05,600 --> 00:10:07,839 check all the boxes. So, instead of 293 00:10:07,839 --> 00:10:10,240 going down one at a time, you can select 294 00:10:10,240 --> 00:10:12,399 all the files that have been imported. 295 00:10:12,399 --> 00:10:15,120 And after doing so, rightclick and then 296 00:10:15,120 --> 00:10:18,320 click check. Now, they are all imported. 297 00:10:18,320 --> 00:10:20,240 Next, we'll import our dark frames using 298 00:10:20,240 --> 00:10:22,320 the same approach. In this case, you 299 00:10:22,320 --> 00:10:24,240 won't need to check these boxes. They're 300 00:10:24,240 --> 00:10:26,320 already imported. Make sure again that 301 00:10:26,320 --> 00:10:28,480 you are using the raw files. After the 302 00:10:28,480 --> 00:10:30,560 dark files, we'll then go to the flat 303 00:10:30,560 --> 00:10:33,040 files. We'll do the same thing again, 304 00:10:33,040 --> 00:10:35,200 making sure we have the raw files, and 305 00:10:35,200 --> 00:10:37,360 then we'll open. Lastly, we're going to 306 00:10:37,360 --> 00:10:40,399 import the bias files, select them all, 307 00:10:40,399 --> 00:10:42,560 and then click open. We now have each of 308 00:10:42,560 --> 00:10:45,040 the light frames, dark frames, flat 309 00:10:45,040 --> 00:10:47,760 frames, and bias frames imported. The 310 00:10:47,760 --> 00:10:49,279 next thing we'll do is adjust the 311 00:10:49,279 --> 00:10:51,760 register settings. I'd recommend setting 312 00:10:51,760 --> 00:10:54,640 this to the best 95% photos. Next, we'll 313 00:10:54,640 --> 00:10:56,160 want to make sure we have enough stars 314 00:10:56,160 --> 00:10:57,920 in our images so they can align 315 00:10:57,920 --> 00:11:00,399 properly. We can see we've got quite a 316 00:11:00,399 --> 00:11:02,000 number. We can actually slide that 317 00:11:02,000 --> 00:11:04,240 slider down so we don't have quite as 318 00:11:04,240 --> 00:11:06,399 many. Let's run it again. And after 319 00:11:06,399 --> 00:11:08,160 doing so, we've see that we've got a few 320 00:11:08,160 --> 00:11:10,079 hundred. That should be good enough. 321 00:11:10,079 --> 00:11:11,760 After that, we'll go to the recommended 322 00:11:11,760 --> 00:11:13,760 settings. And as a general rule, the 323 00:11:13,760 --> 00:11:15,839 recommended settings in blue beneath red 324 00:11:15,839 --> 00:11:17,920 usually yield good results. For the 325 00:11:17,920 --> 00:11:20,160 stacking setting, there are two options. 326 00:11:20,160 --> 00:11:22,320 I used the Sigma clipping method that 327 00:11:22,320 --> 00:11:24,399 worked best for me in my case. After 328 00:11:24,399 --> 00:11:26,800 that, you'll click okay 329 00:11:26,800 --> 00:11:28,880 and then click okay again. All of our 330 00:11:28,880 --> 00:11:30,640 light frames have been uploaded for a 331 00:11:30,640 --> 00:11:32,800 total of about 12 minutes of exposure 332 00:11:32,800 --> 00:11:34,320 and we have all of our calibration 333 00:11:34,320 --> 00:11:36,959 frames as well. Go ahead and click okay. 334 00:11:36,959 --> 00:11:38,640 Depending on the computer you have, it 335 00:11:38,640 --> 00:11:41,600 may take anywhere from 15 to 45 minutes. 336 00:11:41,600 --> 00:11:44,000 Let's go ahead and jump ahead. This is 337 00:11:44,000 --> 00:11:45,920 our final output image. And up here in 338 00:11:45,920 --> 00:11:48,079 the top lefthand corner, you can see the 339 00:11:48,079 --> 00:11:50,079 location of your file. Now that you have 340 00:11:50,079 --> 00:11:51,760 your stacked image, we can move on to 341 00:11:51,760 --> 00:11:53,440 the final part of this tutorial, 342 00:11:53,440 --> 00:11:55,680 processing. In this case, I'll be using 343 00:11:55,680 --> 00:11:57,839 Photoshop, and you can get a free 7-day 344 00:11:57,839 --> 00:11:59,600 trial online. Now, if you have an 345 00:11:59,600 --> 00:12:01,120 aversion to free trials and don't want 346 00:12:01,120 --> 00:12:02,800 to put in credit card information, then 347 00:12:02,800 --> 00:12:04,480 Photo P is a good alternative. In 348 00:12:04,480 --> 00:12:06,160 addition to having a similar interface, 349 00:12:06,160 --> 00:12:07,920 it has many of the same functionalities 350 00:12:07,920 --> 00:12:09,760 as you'll find in Photoshop. But like I 351 00:12:09,760 --> 00:12:11,040 said, we're going to do ours in 352 00:12:11,040 --> 00:12:12,880 Photoshop. And the first thing we'll do 353 00:12:12,880 --> 00:12:16,000 is save our file as a PSD or Photoshop 354 00:12:16,000 --> 00:12:18,399 file. The next step is we'll go to image 355 00:12:18,399 --> 00:12:21,120 down to mode and then 16 bit channel. 356 00:12:21,120 --> 00:12:23,279 We're going to change the mode using the 357 00:12:23,279 --> 00:12:25,600 exposure gamma settings and change it to 358 00:12:25,600 --> 00:12:28,880 16 bit mode. Click okay. And now what 359 00:12:28,880 --> 00:12:30,639 we're going to do next is duplicate the 360 00:12:30,639 --> 00:12:33,120 layer. You can use the hotkeys J to do 361 00:12:33,120 --> 00:12:35,120 this. I plan on renaming all of my 362 00:12:35,120 --> 00:12:36,480 layers so that you can have a simple 363 00:12:36,480 --> 00:12:37,920 reference to screenshot [music] 364 00:12:37,920 --> 00:12:39,760 when you're doing your processing. The 365 00:12:39,760 --> 00:12:41,200 next thing we're going to do is we need 366 00:12:41,200 --> 00:12:43,279 to level out this background so it's 367 00:12:43,279 --> 00:12:46,160 more gray. So we do ctr L to do a levels 368 00:12:46,160 --> 00:12:48,320 adjust. Click the middle eyropper and 369 00:12:48,320 --> 00:12:50,079 then click somewhere in the middle to 370 00:12:50,079 --> 00:12:51,600 try to get a nice background that 371 00:12:51,600 --> 00:12:53,519 matches. Once you've done that, you'll 372 00:12:53,519 --> 00:12:56,160 click okay. Go ahead and do Ctrl L 373 00:12:56,160 --> 00:12:57,839 again. And then we're going to grab the 374 00:12:57,839 --> 00:12:59,839 leftmost slider and pull it towards the 375 00:12:59,839 --> 00:13:01,760 histogram. Usually you wouldn't want to 376 00:13:01,760 --> 00:13:03,760 clip off this part, but that's just an 377 00:13:03,760 --> 00:13:05,600 artifact from the stacking and that's 378 00:13:05,600 --> 00:13:08,000 okay. We'll address that later. pull it 379 00:13:08,000 --> 00:13:09,360 a little bit more towards the center and 380 00:13:09,360 --> 00:13:12,160 then click okay. Now to address those 381 00:13:12,160 --> 00:13:13,920 artifacts, we're going to crop the image 382 00:13:13,920 --> 00:13:16,320 in. So grab the crop tool and pull the 383 00:13:16,320 --> 00:13:17,920 sides in slightly to get rid of that 384 00:13:17,920 --> 00:13:20,480 weird framing artifact. 385 00:13:20,480 --> 00:13:23,120 Now we can do ctr L again. And this time 386 00:13:23,120 --> 00:13:24,800 you'll see that there's no artifacts in 387 00:13:24,800 --> 00:13:26,639 the histogram. So go ahead and pull the 388 00:13:26,639 --> 00:13:28,079 left slider over and then take the 389 00:13:28,079 --> 00:13:29,360 middle one and pull it towards the 390 00:13:29,360 --> 00:13:31,440 histogram. We're going to do this a few 391 00:13:31,440 --> 00:13:33,040 more times. And as we're doing this, 392 00:13:33,040 --> 00:13:35,040 you'll notice that we are revealing more 393 00:13:35,040 --> 00:13:37,760 detail in the galaxy right here. Uh, but 394 00:13:37,760 --> 00:13:39,279 we're also keeping the background a 395 00:13:39,279 --> 00:13:41,040 little bit balanced. We'll go ahead and 396 00:13:41,040 --> 00:13:42,720 do this one more time. Now, what you 397 00:13:42,720 --> 00:13:44,000 start to notice is some of the 398 00:13:44,000 --> 00:13:46,000 background changes as we're doing this. 399 00:13:46,000 --> 00:13:47,760 So, what we'll need to do is go in and 400 00:13:47,760 --> 00:13:49,839 grab the middle eyropper again to set 401 00:13:49,839 --> 00:13:51,680 another gray point. The other thing that 402 00:13:51,680 --> 00:13:53,200 we're going to do is we can actually 403 00:13:53,200 --> 00:13:55,519 adjust the individual channels. We can 404 00:13:55,519 --> 00:13:58,320 go through the red, green, and blue and 405 00:13:58,320 --> 00:14:00,639 try to get them as balanced as possible. 406 00:14:00,639 --> 00:14:03,040 So, we've got a nice flat background. 407 00:14:03,040 --> 00:14:04,639 After this, create a new layer from the 408 00:14:04,639 --> 00:14:07,040 visible by holding control shift alt E, 409 00:14:07,040 --> 00:14:08,560 which is something we'll do throughout 410 00:14:08,560 --> 00:14:10,800 this [music] process. Then, we will 411 00:14:10,800 --> 00:14:12,399 continue to do a few more levels 412 00:14:12,399 --> 00:14:15,040 adjusts. Open up levels again. Grab the 413 00:14:15,040 --> 00:14:16,560 left slider and pull it towards the 414 00:14:16,560 --> 00:14:18,880 center. Click okay. Open up levels 415 00:14:18,880 --> 00:14:21,600 again. Make sure you do not pull it into 416 00:14:21,600 --> 00:14:23,279 the histogram. This is called clipping 417 00:14:23,279 --> 00:14:25,920 the data and it's not good. So, pull it 418 00:14:25,920 --> 00:14:28,480 right up to the edge and then click 419 00:14:28,480 --> 00:14:30,880 okay. Open up levels again and then pull 420 00:14:30,880 --> 00:14:32,639 the center one towards the histogram as 421 00:14:32,639 --> 00:14:34,240 well. Now we're really starting to see 422 00:14:34,240 --> 00:14:36,480 the galaxy pop out in our image, [music] 423 00:14:36,480 --> 00:14:38,480 which is great. We're going to do one 424 00:14:38,480 --> 00:14:41,839 more levels adjust. 425 00:14:41,839 --> 00:14:43,120 And that's looking pretty good in the 426 00:14:43,120 --> 00:14:45,360 center here with the galaxy. We're going 427 00:14:45,360 --> 00:14:48,800 to create a new layer from the visible. 428 00:14:48,800 --> 00:14:50,320 Next, we'll do what's called a curves 429 00:14:50,320 --> 00:14:53,040 adjust. So holdm [music] and the curves 430 00:14:53,040 --> 00:14:54,959 window will pop up. This shows the 431 00:14:54,959 --> 00:14:57,199 histogram from the black point all the 432 00:14:57,199 --> 00:14:59,120 way to the white point. And what we're 433 00:14:59,120 --> 00:15:01,920 going to do is stretch the data. So 434 00:15:01,920 --> 00:15:03,519 we're going to click somewhere on the 435 00:15:03,519 --> 00:15:05,680 histogram 436 00:15:05,680 --> 00:15:07,839 right about here. And we can pull that 437 00:15:07,839 --> 00:15:09,760 up slightly and pull the middle part of 438 00:15:09,760 --> 00:15:11,839 it down. This is going to allow us to 439 00:15:11,839 --> 00:15:13,680 have more contrast and reveal more 440 00:15:13,680 --> 00:15:15,680 detail in the galaxy. We don't want to 441 00:15:15,680 --> 00:15:17,199 do too much cuz we're starting to get 442 00:15:17,199 --> 00:15:19,680 this nasty gradient over here. So we can 443 00:15:19,680 --> 00:15:22,320 pull this back just slightly and then 444 00:15:22,320 --> 00:15:26,920 pull the part down a little bit too. 445 00:15:27,440 --> 00:15:28,959 It may take a little bit of playing with 446 00:15:28,959 --> 00:15:30,959 it, but do your best to get something 447 00:15:30,959 --> 00:15:33,680 that looks just about like this. Click 448 00:15:33,680 --> 00:15:35,839 okay. 449 00:15:35,839 --> 00:15:37,760 Now, as you can see, we have this nasty 450 00:15:37,760 --> 00:15:40,079 gradient. So, after creating another new 451 00:15:40,079 --> 00:15:42,240 layer from visible, what we are going to 452 00:15:42,240 --> 00:15:44,880 do is use the linear gradient tool to 453 00:15:44,880 --> 00:15:47,040 get rid of that. First, make sure you 454 00:15:47,040 --> 00:15:48,880 save that project before you lose it. 455 00:15:48,880 --> 00:15:51,120 Very important. Learned this one the 456 00:15:51,120 --> 00:15:53,600 hard way. And then, we're going to 457 00:15:53,600 --> 00:15:56,320 address the gradient. So, go to filter, 458 00:15:56,320 --> 00:15:59,360 camera raw filter. 459 00:15:59,360 --> 00:16:01,680 And what we're going to do first is zoom 460 00:16:01,680 --> 00:16:03,199 out a little bit farther to something 461 00:16:03,199 --> 00:16:05,839 that's maybe about 12%. Here you can see 462 00:16:05,839 --> 00:16:07,920 the gradient is pretty bad. So, we're 463 00:16:07,920 --> 00:16:09,759 going to go over to the circle icon and 464 00:16:09,759 --> 00:16:12,880 create a new linear gradient. We'll go 465 00:16:12,880 --> 00:16:14,320 to the side of the photo that has the 466 00:16:14,320 --> 00:16:16,320 gradient. Click in the area that has the 467 00:16:16,320 --> 00:16:18,000 most gradient and then pull towards the 468 00:16:18,000 --> 00:16:19,600 area that does not. Now, you can 469 00:16:19,600 --> 00:16:21,519 redirect the center and vector of the 470 00:16:21,519 --> 00:16:23,440 gradient, but this looks pretty good. 471 00:16:23,440 --> 00:16:24,959 Then when you go back to the right hand 472 00:16:24,959 --> 00:16:26,800 side, you can toggle the amounts of the 473 00:16:26,800 --> 00:16:29,360 exposure, the contrast, as well as any 474 00:16:29,360 --> 00:16:31,360 number of other values to make sure it 475 00:16:31,360 --> 00:16:34,160 meshes in well. After zooming in, we can 476 00:16:34,160 --> 00:16:35,680 see that the gradient's looking a lot 477 00:16:35,680 --> 00:16:37,839 better. If we go down, we can also 478 00:16:37,839 --> 00:16:40,480 adjust the tint and the temperature, but 479 00:16:40,480 --> 00:16:42,480 I'm pretty happy with the contrast and 480 00:16:42,480 --> 00:16:44,399 exposure that we've landed on. And I 481 00:16:44,399 --> 00:16:46,079 think this is looking pretty good. You 482 00:16:46,079 --> 00:16:47,920 can really see how this simple process 483 00:16:47,920 --> 00:16:49,920 took care of much of the gradient. And 484 00:16:49,920 --> 00:16:51,920 as we zoom in on the galaxy, we can 485 00:16:51,920 --> 00:16:53,440 really start to see some of the dust 486 00:16:53,440 --> 00:16:55,519 lanes popping. You can even see some of 487 00:16:55,519 --> 00:16:59,600 the young blue stars on the outer edges. 488 00:16:59,600 --> 00:17:01,279 So, we'll create another new layer from 489 00:17:01,279 --> 00:17:04,079 visible. 490 00:17:04,079 --> 00:17:05,679 And after we've done that, we're going 491 00:17:05,679 --> 00:17:07,919 to do yet another curves adjust. When 492 00:17:07,919 --> 00:17:09,439 the curves windows open, you can 493 00:17:09,439 --> 00:17:11,600 actually click with the eyropper tool 494 00:17:11,600 --> 00:17:13,360 somewhere in the image and that value 495 00:17:13,360 --> 00:17:15,439 will plot itself on the chart. This 496 00:17:15,439 --> 00:17:17,439 makes it easy for adjusting just the 497 00:17:17,439 --> 00:17:19,600 areas you want to focus on. We can zoom 498 00:17:19,600 --> 00:17:21,520 in on the galaxy and you really start to 499 00:17:21,520 --> 00:17:23,679 see the details popping even more with 500 00:17:23,679 --> 00:17:26,000 that simple curve stretch. Next, we're 501 00:17:26,000 --> 00:17:28,000 going to do a new layer from visible. 502 00:17:28,000 --> 00:17:29,360 And then after that, we're going to 503 00:17:29,360 --> 00:17:31,600 address these nasty blue halos around 504 00:17:31,600 --> 00:17:33,840 the stars that were caused by our cheap 505 00:17:33,840 --> 00:17:35,840 lens. 506 00:17:35,840 --> 00:17:38,799 Go up to filter camera raw filter and 507 00:17:38,799 --> 00:17:40,400 then go over here on the right hand side 508 00:17:40,400 --> 00:17:43,280 to optics. Here we can set the purple 509 00:17:43,280 --> 00:17:45,280 amount and purple hue we're choosing to 510 00:17:45,280 --> 00:17:47,280 different. Don't pull it too far into 511 00:17:47,280 --> 00:17:49,200 the blue or else you'll remove the blue 512 00:17:49,200 --> 00:17:51,360 stars from the galaxy. So, really focus 513 00:17:51,360 --> 00:17:53,280 on adjusting the purple amount to get to 514 00:17:53,280 --> 00:17:56,840 where you want to go. 515 00:17:57,600 --> 00:17:59,120 You might have to play around with it, 516 00:17:59,120 --> 00:18:01,039 but that's okay. Do some guessing and 517 00:18:01,039 --> 00:18:02,400 checking to make sure that [music] the 518 00:18:02,400 --> 00:18:05,600 blue stars in the galaxy are remained. 519 00:18:05,600 --> 00:18:07,520 After you click okay, you can really 520 00:18:07,520 --> 00:18:09,120 start to see the big difference that you 521 00:18:09,120 --> 00:18:11,200 made in the stars and how they look a 522 00:18:11,200 --> 00:18:15,160 lot better than they did before. 523 00:18:17,760 --> 00:18:19,520 After this, we'll do another new layer 524 00:18:19,520 --> 00:18:21,760 from visible and then another levels 525 00:18:21,760 --> 00:18:24,760 adjust. 526 00:18:25,760 --> 00:18:27,360 We can see the background is starting to 527 00:18:27,360 --> 00:18:29,120 look a little bit green up here. So, 528 00:18:29,120 --> 00:18:31,360 we're going to go to the green channel 529 00:18:31,360 --> 00:18:33,760 and slightly adjust some of the sliders 530 00:18:33,760 --> 00:18:35,520 for that. We can pull the left-handed 531 00:18:35,520 --> 00:18:37,280 one in, but you don't want to go too 532 00:18:37,280 --> 00:18:39,679 far. It'll turn to red. Next, we'll go 533 00:18:39,679 --> 00:18:41,360 to the red channel and we'll adjust that 534 00:18:41,360 --> 00:18:45,039 one slightly as well. 535 00:18:45,280 --> 00:18:47,679 And then we can click okay. We'll do 536 00:18:47,679 --> 00:18:49,120 another levels adjust. And this time 537 00:18:49,120 --> 00:18:52,080 we'll focus on the blue channel 538 00:18:52,080 --> 00:18:53,440 and make sure that we don't move those 539 00:18:53,440 --> 00:18:56,400 sliders too much. That looks pretty 540 00:18:56,400 --> 00:18:59,440 good. Before we continue, go up to file, 541 00:18:59,440 --> 00:19:02,320 save as, and then grab the drop down to 542 00:19:02,320 --> 00:19:04,960 make sure that the Tiff is selected. We 543 00:19:04,960 --> 00:19:06,799 need to save this file as a TIFF file 544 00:19:06,799 --> 00:19:08,799 for Staret. I'm naming it something 545 00:19:08,799 --> 00:19:10,720 including Staret so that I can make sure 546 00:19:10,720 --> 00:19:12,640 I know where it's at. Once it's saved, 547 00:19:12,640 --> 00:19:15,120 click okay and then click okay again. 548 00:19:15,120 --> 00:19:16,960 What is Staret, you may ask? It's a free 549 00:19:16,960 --> 00:19:18,880 program to remove stars from your photo. 550 00:19:18,880 --> 00:19:20,720 So, you can take a photo like this and 551 00:19:20,720 --> 00:19:23,120 turn it into one like this. This is what 552 00:19:23,120 --> 00:19:24,640 the website looks like. And if you 553 00:19:24,640 --> 00:19:26,320 scroll all the way to the bottom, you 554 00:19:26,320 --> 00:19:28,080 can see the download for Windows. Now, 555 00:19:28,080 --> 00:19:29,440 once you've downloaded it, you'll have 556 00:19:29,440 --> 00:19:30,880 to make sure you rightclick it and 557 00:19:30,880 --> 00:19:33,679 extract all the files. Now, what I'm 558 00:19:33,679 --> 00:19:35,520 going to do is go back to that TIFF file 559 00:19:35,520 --> 00:19:38,240 I saved and actually cut it and paste it 560 00:19:38,240 --> 00:19:41,120 into the extracted file folder. 561 00:19:41,120 --> 00:19:42,960 Then I'm going to go up to the Staret 562 00:19:42,960 --> 00:19:46,480 GUI and doubleclick it. This will open 563 00:19:46,480 --> 00:19:48,640 the interface for Staret. I can then 564 00:19:48,640 --> 00:19:50,720 browse to the file that I just moved to 565 00:19:50,720 --> 00:19:52,720 the folder. Here's even a test file they 566 00:19:52,720 --> 00:19:54,640 provide. And then I can click on that 567 00:19:54,640 --> 00:19:57,440 file. Once I've opened that, I then need 568 00:19:57,440 --> 00:19:59,200 to make sure I change the output file 569 00:19:59,200 --> 00:20:01,120 name. I'm going to change it to 570 00:20:01,120 --> 00:20:05,480 something called Staret Output. 571 00:20:05,679 --> 00:20:08,400 And then I'm going to click run. 572 00:20:08,400 --> 00:20:11,360 Now, this will take some time. 573 00:20:11,360 --> 00:20:13,600 But let's use some movie magic again. 574 00:20:13,600 --> 00:20:15,200 Now that it's finished, we can see the 575 00:20:15,200 --> 00:20:16,960 output file. And we're going to open 576 00:20:16,960 --> 00:20:20,278 that in a separate Photoshop project. 577 00:20:20,278 --> 00:20:20,934 [music] 578 00:20:20,934 --> 00:20:22,880 [cheering] 579 00:20:22,880 --> 00:20:24,400 The first thing we'll do when we open it 580 00:20:24,400 --> 00:20:26,559 in a project is zoom in and look at that 581 00:20:26,559 --> 00:20:28,640 detail that we can see now that we've 582 00:20:28,640 --> 00:20:30,720 removed the stars. So, the first thing 583 00:20:30,720 --> 00:20:32,320 we're going to do is we're going to 584 00:20:32,320 --> 00:20:34,080 actually remove a lot of these artifacts 585 00:20:34,080 --> 00:20:35,760 from the leftover stars that were not 586 00:20:35,760 --> 00:20:37,679 removed. We're going to use a spot 587 00:20:37,679 --> 00:20:39,440 healing brush tool on the left hand 588 00:20:39,440 --> 00:20:41,600 side. As far as the brush tool settings, 589 00:20:41,600 --> 00:20:44,000 I used something medium. And you want to 590 00:20:44,000 --> 00:20:45,600 make sure you also have a low percentage 591 00:20:45,600 --> 00:20:48,400 hardness for the brush. The normal mode 592 00:20:48,400 --> 00:20:50,480 also works pretty well. And all you're 593 00:20:50,480 --> 00:20:52,559 going to do is just click on each of the 594 00:20:52,559 --> 00:20:54,880 stars and remove them. This may take 595 00:20:54,880 --> 00:20:56,720 some time. Let's use that movie magic 596 00:20:56,720 --> 00:20:58,480 again. Now that we're done, we're going 597 00:20:58,480 --> 00:21:02,799 to create a new layer from visible. 598 00:21:02,799 --> 00:21:04,480 And then again, we'll create another new 599 00:21:04,480 --> 00:21:07,039 layer from the visible. Next, we'll do a 600 00:21:07,039 --> 00:21:08,880 curves adjust. And we're going to do a 601 00:21:08,880 --> 00:21:10,720 slight adjustment. Again, stretching the 602 00:21:10,720 --> 00:21:13,120 data a little bit more. As we're doing 603 00:21:13,120 --> 00:21:14,240 that, we want to make sure we're not 604 00:21:14,240 --> 00:21:15,919 blowing out the core of the galaxy. So, 605 00:21:15,919 --> 00:21:17,200 we want to be careful [music] with those 606 00:21:17,200 --> 00:21:19,440 highlights. 607 00:21:19,440 --> 00:21:21,919 Click okay. And things are looking a lot 608 00:21:21,919 --> 00:21:24,400 better. We'll do another levels adjust 609 00:21:24,400 --> 00:21:26,080 to make sure that things are balanced in 610 00:21:26,080 --> 00:21:27,600 the background, going through each 611 00:21:27,600 --> 00:21:29,440 channel as needed to where we can get 612 00:21:29,440 --> 00:21:33,559 something that's nice and neutral. 613 00:21:35,919 --> 00:21:37,440 We're going to create another new layer 614 00:21:37,440 --> 00:21:40,480 from the visible 615 00:21:40,480 --> 00:21:41,919 and then we're going to adjust the 616 00:21:41,919 --> 00:21:44,320 vibrance and saturation for this 617 00:21:44,320 --> 00:21:46,320 particular layer. So grab that 618 00:21:46,320 --> 00:21:48,400 saturation slider and pull it up but not 619 00:21:48,400 --> 00:21:50,720 too much. 620 00:21:50,720 --> 00:21:52,640 If we zoom in, we can start to see some 621 00:21:52,640 --> 00:21:54,559 of the detail in the outer edges and 622 00:21:54,559 --> 00:21:56,480 some of that blue coming through nicely. 623 00:21:56,480 --> 00:21:58,480 After we've created another new layer, 624 00:21:58,480 --> 00:22:02,240 we're going to do another levels adjust. 625 00:22:02,240 --> 00:22:04,080 We're going to set the gray point again 626 00:22:04,080 --> 00:22:05,760 by clicking somewhere in the image and 627 00:22:05,760 --> 00:22:07,760 then clicking okay. Now, one thing we 628 00:22:07,760 --> 00:22:09,919 want to focus on is a selected color 629 00:22:09,919 --> 00:22:12,320 range for focused saturation. So, we'll 630 00:22:12,320 --> 00:22:15,120 click select color range and then we'll 631 00:22:15,120 --> 00:22:16,880 use the eyropper to click somewhere in 632 00:22:16,880 --> 00:22:19,919 the galaxy. You can adjust the fuzziness 633 00:22:19,919 --> 00:22:21,360 to change the amount that's being 634 00:22:21,360 --> 00:22:23,039 selected 635 00:22:23,039 --> 00:22:25,200 and then click okay. 636 00:22:25,200 --> 00:22:26,880 We've primarily selected the outer 637 00:22:26,880 --> 00:22:28,400 edges. And then we'll click hue 638 00:22:28,400 --> 00:22:30,720 saturation again to bump up that 639 00:22:30,720 --> 00:22:32,880 saturation even more on the outer edges 640 00:22:32,880 --> 00:22:35,360 of the galaxy. 641 00:22:35,360 --> 00:22:37,440 Things are looking pretty good. And 642 00:22:37,440 --> 00:22:39,120 after we create another new layer, we'll 643 00:22:39,120 --> 00:22:42,000 do yet another levels adjust. 644 00:22:42,000 --> 00:22:43,679 Now, as we continue to brighten this 645 00:22:43,679 --> 00:22:45,520 image with these level adjusts, we want 646 00:22:45,520 --> 00:22:46,880 to make sure that things are remaining 647 00:22:46,880 --> 00:22:48,720 balanced. So, we can go into these 648 00:22:48,720 --> 00:22:50,799 individual channels again and make sure 649 00:22:50,799 --> 00:22:52,880 that things have a neutral background. 650 00:22:52,880 --> 00:22:54,640 This is a constant iterative process 651 00:22:54,640 --> 00:22:56,159 that you'll need to keep checking on 652 00:22:56,159 --> 00:22:59,799 throughout your process. 653 00:23:03,200 --> 00:23:05,440 If we zoom in on the galaxy now, we can 654 00:23:05,440 --> 00:23:06,960 see things are looking really, really 655 00:23:06,960 --> 00:23:08,799 good both in the core and the outer 656 00:23:08,799 --> 00:23:10,960 edges. 657 00:23:10,960 --> 00:23:13,679 What we're going to do now is Ctrl C and 658 00:23:13,679 --> 00:23:16,400 Ctrl +V this starless image onto our 659 00:23:16,400 --> 00:23:18,720 main project. Here you can see the 660 00:23:18,720 --> 00:23:20,159 difference in terms of the amount of 661 00:23:20,159 --> 00:23:22,320 galaxy we've revealed compared to how it 662 00:23:22,320 --> 00:23:25,440 originally looked. After renaming this 663 00:23:25,440 --> 00:23:28,000 layer, I'm actually going to copy the 664 00:23:28,000 --> 00:23:30,080 layer that had the stars and place it on 665 00:23:30,080 --> 00:23:31,541 top of the one that does not have the 666 00:23:31,541 --> 00:23:33,200 [music] stars. Then I'm going to adjust 667 00:23:33,200 --> 00:23:35,360 the opacity of the star layer on top to 668 00:23:35,360 --> 00:23:37,679 80%. I'm then going to create a new 669 00:23:37,679 --> 00:23:39,760 layer from visible. Now, there are many 670 00:23:39,760 --> 00:23:41,440 different ways to combine starless and 671 00:23:41,440 --> 00:23:43,679 star layers. This is just one really 672 00:23:43,679 --> 00:23:46,240 quick option. Not necessarily the best, 673 00:23:46,240 --> 00:23:48,240 but it can get the job done. Let's do a 674 00:23:48,240 --> 00:23:49,600 quick comparison to the way things 675 00:23:49,600 --> 00:23:51,360 looked before and the way things looked 676 00:23:51,360 --> 00:23:52,960 after. We can see the stars are 677 00:23:52,960 --> 00:23:55,039 significantly less bright and they're a 678 00:23:55,039 --> 00:23:56,640 little bit smaller as well, which can 679 00:23:56,640 --> 00:23:59,120 help our overall process. Zooming back 680 00:23:59,120 --> 00:24:01,120 out, we'll turn on all of our layers 681 00:24:01,120 --> 00:24:04,559 again. Create another new layer. 682 00:24:04,559 --> 00:24:05,760 And then we're going to do another 683 00:24:05,760 --> 00:24:07,840 curves adjust. clicking that eyropper 684 00:24:07,840 --> 00:24:09,360 somewhere on the outer edge of the of 685 00:24:09,360 --> 00:24:12,080 the galaxy and then pulling up to the 686 00:24:12,080 --> 00:24:14,000 right. Then we'll click in the dark 687 00:24:14,000 --> 00:24:19,240 space down below and we'll pull down. 688 00:24:20,159 --> 00:24:22,000 As we do this, you'll really start to 689 00:24:22,000 --> 00:24:24,080 see the difference between the starless 690 00:24:24,080 --> 00:24:26,400 and star image. Notice that the stars 691 00:24:26,400 --> 00:24:27,919 don't really change at all, but the 692 00:24:27,919 --> 00:24:30,080 galaxy is that much more pronounced. 693 00:24:30,080 --> 00:24:32,720 This is exactly what we are after. But 694 00:24:32,720 --> 00:24:34,240 we also want to make sure that the core 695 00:24:34,240 --> 00:24:36,400 of the galaxy is not blown out. And I 696 00:24:36,400 --> 00:24:37,840 think we've done a pretty good job here 697 00:24:37,840 --> 00:24:40,080 retaining that detail, especially in the 698 00:24:40,080 --> 00:24:43,320 dust lanes. 699 00:24:44,880 --> 00:24:46,640 After zooming back out and turning on 700 00:24:46,640 --> 00:24:48,480 all of our layers, we can see that 701 00:24:48,480 --> 00:24:50,480 there's a lot of unused space in this 702 00:24:50,480 --> 00:24:52,720 image. Because of the sensitivity of our 703 00:24:52,720 --> 00:24:54,640 camera, we can't pick up much of 704 00:24:54,640 --> 00:24:57,120 anything else. So, what you can do as an 705 00:24:57,120 --> 00:24:59,600 option is copy the top layer [music] to 706 00:24:59,600 --> 00:25:02,400 a new Photoshop project, and then we're 707 00:25:02,400 --> 00:25:04,240 going to crop it in from there. I don't 708 00:25:04,240 --> 00:25:05,840 want to crop it in this layer because I 709 00:25:05,840 --> 00:25:07,360 don't want to lose the processes I've 710 00:25:07,360 --> 00:25:09,840 already worked on. So once we've pasted 711 00:25:09,840 --> 00:25:11,840 it into a new project, we'll then use 712 00:25:11,840 --> 00:25:13,919 the crop tool to bring it in to adjust 713 00:25:13,919 --> 00:25:15,919 the area of focus, particularly around 714 00:25:15,919 --> 00:25:18,000 the galaxy. This will make things 715 00:25:18,000 --> 00:25:19,520 significantly easier when we're 716 00:25:19,520 --> 00:25:22,520 processing. 717 00:25:23,760 --> 00:25:26,480 After this, we'll do another new layer 718 00:25:26,480 --> 00:25:28,720 and then we'll do another levels adjust. 719 00:25:28,720 --> 00:25:30,480 Grab that middle eyropper and click 720 00:25:30,480 --> 00:25:34,120 somewhere in the image. 721 00:25:34,880 --> 00:25:38,440 Then click okay. 722 00:25:38,960 --> 00:25:41,200 After creating another new layer, we're 723 00:25:41,200 --> 00:25:42,720 going to adjust the vibrance and 724 00:25:42,720 --> 00:25:45,039 saturation yet again for this image. Go 725 00:25:45,039 --> 00:25:46,880 ahead and pull that vibrance up a good 726 00:25:46,880 --> 00:25:51,640 amount. And then the saturation as well. 727 00:25:51,679 --> 00:25:53,360 This is getting some of the details we 728 00:25:53,360 --> 00:25:55,120 really want to start to see, especially 729 00:25:55,120 --> 00:25:58,320 those blue stars on the outer edges. 730 00:25:58,320 --> 00:26:00,000 But we don't want to do too much, so you 731 00:26:00,000 --> 00:26:03,600 might have to back it off some. 732 00:26:04,880 --> 00:26:07,279 We'll create another new layer. I know 733 00:26:07,279 --> 00:26:08,640 you're probably tired of hearing me say 734 00:26:08,640 --> 00:26:10,159 that. 735 00:26:10,159 --> 00:26:11,840 We'll create another layer. And then 736 00:26:11,840 --> 00:26:14,400 we'll do a curves adjust. 737 00:26:14,400 --> 00:26:16,000 So, by clicking somewhere on the outer 738 00:26:16,000 --> 00:26:17,919 edges of the galaxy and then pulling 739 00:26:17,919 --> 00:26:20,000 that up and then pulling down the left 740 00:26:20,000 --> 00:26:22,559 hand side, we can really really start to 741 00:26:22,559 --> 00:26:25,520 see the outer edges of this galaxy 742 00:26:25,520 --> 00:26:30,279 contrast against the darkness of space. 743 00:26:30,640 --> 00:26:32,320 After creating another new layer and 744 00:26:32,320 --> 00:26:33,919 naming both of these, you can do an 745 00:26:33,919 --> 00:26:35,919 optional brightness adjust. If you feel 746 00:26:35,919 --> 00:26:37,919 that the stars and the galaxy in your 747 00:26:37,919 --> 00:26:39,360 image are perhaps a little bit too 748 00:26:39,360 --> 00:26:41,520 washed out, what you can do is go to 749 00:26:41,520 --> 00:26:44,320 adjustments, brightness, contrast, and 750 00:26:44,320 --> 00:26:45,919 then turn down the brightness just a 751 00:26:45,919 --> 00:26:48,000 little bit. You don't have to. I just 752 00:26:48,000 --> 00:26:49,440 want to show you all some tools and 753 00:26:49,440 --> 00:26:51,440 tricks you can use so that you can 754 00:26:51,440 --> 00:26:53,520 develop your own process. When we create 755 00:26:53,520 --> 00:26:55,200 a new layer, you can see the difference 756 00:26:55,200 --> 00:26:56,960 and how things aren't quite as washed 757 00:26:56,960 --> 00:26:58,799 out in the center, which is what we're 758 00:26:58,799 --> 00:27:00,400 going for. 759 00:27:00,400 --> 00:27:02,320 After creating another new layer, if you 760 00:27:02,320 --> 00:27:04,159 zoom in on these stars, you can start to 761 00:27:04,159 --> 00:27:06,400 see still some of the blue halo coming 762 00:27:06,400 --> 00:27:09,679 back from earlier. 763 00:27:09,679 --> 00:27:11,600 To address the saturation of the galaxy 764 00:27:11,600 --> 00:27:13,679 without adding to this, we're going to 765 00:27:13,679 --> 00:27:17,200 go to select color range 766 00:27:17,200 --> 00:27:19,200 and then we'll click localized color 767 00:27:19,200 --> 00:27:22,159 clusters. After that, grab your eyropper 768 00:27:22,159 --> 00:27:23,600 and click somewhere in the center of the 769 00:27:23,600 --> 00:27:27,120 galaxy and adjust the fuzziness to make 770 00:27:27,120 --> 00:27:29,120 sure you're selecting just the galaxy in 771 00:27:29,120 --> 00:27:31,200 the center. Make sure you pull that 772 00:27:31,200 --> 00:27:34,000 range down so it's localized just to the 773 00:27:34,000 --> 00:27:36,799 galaxy 774 00:27:36,799 --> 00:27:38,640 and pull the fuzziness up so you get as 775 00:27:38,640 --> 00:27:40,480 much of that core as possible. You may 776 00:27:40,480 --> 00:27:44,039 have to play with it. 777 00:27:44,480 --> 00:27:47,120 Then click okay. Now you can see we've 778 00:27:47,120 --> 00:27:48,960 selected just the core of the galaxy. 779 00:27:48,960 --> 00:27:50,559 And what we're going to do is another 780 00:27:50,559 --> 00:27:52,559 saturation [music] and vibrance adjust 781 00:27:52,559 --> 00:27:56,440 for the center of the galaxy. 782 00:27:58,000 --> 00:28:00,000 As we pull these up, we can see that 783 00:28:00,000 --> 00:28:01,919 color start to come through without 784 00:28:01,919 --> 00:28:06,039 affecting the rest of our image. 785 00:28:08,399 --> 00:28:11,520 After you create another new layer, we 786 00:28:11,520 --> 00:28:15,720 can then do another curves adjust. 787 00:28:16,960 --> 00:28:18,640 We're going to click somewhere on the 788 00:28:18,640 --> 00:28:21,200 very outskirts of the galaxy and then 789 00:28:21,200 --> 00:28:23,679 click over somewhere in empty space and 790 00:28:23,679 --> 00:28:26,159 pull it even more. 791 00:28:26,159 --> 00:28:28,000 Now, doing it way too much can make 792 00:28:28,000 --> 00:28:29,760 things really grainy, so just make it 793 00:28:29,760 --> 00:28:31,600 subtle. [music] It's a very iterative 794 00:28:31,600 --> 00:28:36,000 process and it takes practice over time. 795 00:28:36,000 --> 00:28:37,919 Toggling it on and off shows us yet 796 00:28:37,919 --> 00:28:39,760 again how we're bringing out more of the 797 00:28:39,760 --> 00:28:41,679 galaxy while managing the brightness of 798 00:28:41,679 --> 00:28:43,360 the stars. 799 00:28:43,360 --> 00:28:45,039 Now, if we zoom in, we can see those 800 00:28:45,039 --> 00:28:47,279 pesky blue halos are back. So, what 801 00:28:47,279 --> 00:28:48,799 we'll do is we'll create a new [music] 802 00:28:48,799 --> 00:28:52,200 layer from visible 803 00:28:56,320 --> 00:28:58,399 and then we'll go up here to filter 804 00:28:58,399 --> 00:29:00,640 camera raw filter. We're going to use 805 00:29:00,640 --> 00:29:02,880 that same def fringe optics tool that we 806 00:29:02,880 --> 00:29:05,039 used earlier, but this time in addition 807 00:29:05,039 --> 00:29:06,960 to adjusting purple, I'm going to slide 808 00:29:06,960 --> 00:29:09,120 the purple hue [music] over to the left 809 00:29:09,120 --> 00:29:11,360 to get into the blue. We'll use an 810 00:29:11,360 --> 00:29:13,840 eraser tool to mask out this new layer 811 00:29:13,840 --> 00:29:15,440 and make sure we don't remove the color 812 00:29:15,440 --> 00:29:17,440 from the galaxy. Now, if we zoom in on 813 00:29:17,440 --> 00:29:19,600 the galaxy, you can see how this action 814 00:29:19,600 --> 00:29:21,760 actually removes some of the blue color 815 00:29:21,760 --> 00:29:23,600 in the stars on the outer edges of the 816 00:29:23,600 --> 00:29:25,679 galaxy, especially as we toggle on and 817 00:29:25,679 --> 00:29:27,760 off these layers. So, what we're going 818 00:29:27,760 --> 00:29:29,760 to do to bring this back is use an 819 00:29:29,760 --> 00:29:31,760 eraser tool that's a small to medium 820 00:29:31,760 --> 00:29:34,480 size with a very low percentage hardness 821 00:29:34,480 --> 00:29:36,960 and a very low percentage opacity. and 822 00:29:36,960 --> 00:29:38,320 clicking [music] on the top layer, we're 823 00:29:38,320 --> 00:29:40,480 just going to erase the galaxy as it 824 00:29:40,480 --> 00:29:42,720 appears. This will remove the part 825 00:29:42,720 --> 00:29:44,640 underneath to where we can restore those 826 00:29:44,640 --> 00:29:48,960 blue stars and maintain the color. 827 00:29:48,960 --> 00:29:50,240 After that, we're going to create 828 00:29:50,240 --> 00:29:51,760 another new layer and then we're going 829 00:29:51,760 --> 00:29:53,919 to adjust the vibrance and saturation 830 00:29:53,919 --> 00:29:56,030 one last time. 831 00:29:56,030 --> 00:29:58,050 [music] 832 00:29:58,799 --> 00:30:01,120 After one more layer, I promise it's the 833 00:30:01,120 --> 00:30:03,520 last one, we'll do another levels adjust 834 00:30:03,520 --> 00:30:05,855 to bring out a nice even background. In 835 00:30:05,855 --> 00:30:07,039 [music] this case, I'm going to go to 836 00:30:07,039 --> 00:30:08,880 the green channel and pull it to where I 837 00:30:08,880 --> 00:30:11,039 see fit. 838 00:30:11,039 --> 00:30:12,419 Now, you can repeat these processes 839 00:30:12,419 --> 00:30:14,399 [music] again and again and do them in 840 00:30:14,399 --> 00:30:16,159 different orders. There is no one exact 841 00:30:16,159 --> 00:30:17,840 way to process the image, and there 842 00:30:17,840 --> 00:30:19,600 never will be, but these are some of the 843 00:30:19,600 --> 00:30:21,279 commonly recurring approaches and 844 00:30:21,279 --> 00:30:23,279 techniques that you can use to achieve 845 00:30:23,279 --> 00:30:25,520 the final image like I did. If you like 846 00:30:25,520 --> 00:30:27,279 that video, please consider subscribing. 847 00:30:27,279 --> 00:30:29,039 It really helps my channel. And if you 848 00:30:29,039 --> 00:30:30,960 have any other ideas for other astro 849 00:30:30,960 --> 00:30:32,559 tutorials, let me [music] know in the 850 00:30:32,559 --> 00:30:34,080 comments. I would love to hear them. 851 00:30:34,080 --> 00:30:38,159 Thank you so much again for watching.61143

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