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hi everyone this is Trevor Jones from
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Astro backyard comm and in this video
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I'm going to photograph a nebula in the
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night sky in my backyard tonight using
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this rig here this camera can be found
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on eBay for under 200 dollars even 150
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it's an old DSLR from 2011 and will work
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just fine for capturing deep sky Astro
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photography with a camera lens like this
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it may sound unbelievable when you
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consider all the expensive dedicated
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astronomy cameras that have come out in
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the last 10 years but this old DSLR is
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capable of capturing incredible images
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of the night sky as you can see here
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I've got a Rokinon one 35 millimeter f/2
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lens attached to the camera it's sitting
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on a star tracker mountain the sky
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watchers star adventurer but this is
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essentially the exact rig I'm going to
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be using in the backyard with a few more
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accessories that do heater van and a
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remote shutter release cable the reason
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I wanted to make this video is because
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people get hung up in the fact that
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Astro photography is really expensive
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but really with a simple rig like this
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I'm going to prove to you that from an
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ordinary backyard in the city you can
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get astonishing results
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[Music]
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you can find this camera on eBay for
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under $200 here's a few examples I found
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close to the 150 range some of them even
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come with lenses the only difference
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between that one and the version you see
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here is that this one's been modified so
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all that means is that this stock IR cut
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filter has been removed and it's just
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the naked sensor mod so nothing else was
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replaced just that IR cut filter that
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blocks out the red colors that are no
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good for daytime photography but it's so
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important for astrophotography and
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that's been removed you can do this
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modification yourself and that's exactly
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what I did with my previous DSLR for
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astrophotography the XSI you go in there
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take it apart pry it off with an exacto
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knife you really need to follow the
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instructions but it's interesting that
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some of the newer DSLRs it's a lot
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harder to do this modification yourself
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and you're better off actually sending
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it away for a professional to do but
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these older ones such as the t3i and the
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XS I and XS you could really do yourself
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if you follow along with the YouTube
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video so I'm sticking with that this
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camera is still under $200 if you modify
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it yourself for free the star tracker
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this the star adventurer here really is
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the key to the whole thing and why it
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works with that star tracker now I can
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take long exposure tracked images of the
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night sky which is the key to taking
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deep sky Astro photography images
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there's also a filter inside the camera
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if I was under dark skies I wouldn't
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need that filter or just a UV IR cut
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filter but I've got a light pollution
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filter in there the sky Tech's Els CCD
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just to help me capture an image with
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better contrast that ignores a lot of
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the city light pollution I'm used to in
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the backyard I think you'll find that
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there's a lot of capable older DSLRs
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that are great for astrophotography what
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makes this t3i so special specifically
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one of the main things is Believe It or
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Not this flip out screen so handy for
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astrophotography being able to flip it
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out when you're focusing on stars or
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you've got to point it up and you need
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to see the screen another cool thing is
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that you can very easily and affordably
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run it using AC power I've got the
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battery in there now but
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you can actually put a dummy battery in
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the bottom and then the other end you
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can actually plug into AC power so then
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you're powering the camera through AC
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power not relying on that battery which
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will die quickly so to look at the
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camera settings I used for my photos and
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these are pretty typical of all the
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Ostrow photography images I take with
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this camera whether it's through a lens
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or telescope so you want it in manual
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mode normally you'll be shooting it in
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ball mode which is just beyond 30
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seconds ISO 1600 which is a bit
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aggressive some people like to use more
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like 800 or 400 this camera the noise
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profile 1600 seems to be the sweet spot
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where you can actually pick up a little
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more signal but still remove that noise
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through calibration don't worry about
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white balance you can adjust that
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because we're shooting the files in raw
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mode so we can adjust that after the
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fact so yeah just a really capable
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little camera and one last thing the
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remote shutter release cable on the side
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door here there's a spot for that this
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is the remote shutter release cable I
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use and that allows me to automate a
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sequence of exposures that just plugs in
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here and then there's no need for a
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laptop or anything to run your session
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you can just use this little remote
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shutter release cable and when you're
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keeping equipment to a minimum and setup
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time something like this is really handy
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it's going down to minus 17 degrees
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Celsius tonight so a very cold night
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here in Ontario Canada and that's a good
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and bad thing so hopefully that is not
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too cold for this star tracker it will
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be really hard on the batteries the
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batteries are gonna die quicker on the
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star tracker and in the camera itself
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the good thing about that cold weather
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though is that sensor in the camera
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isn't gonna get very hot it's probably
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gonna hover around somewhere around 0 to
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minus 5 degrees which is great for
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keeping noise at bay the other thing to
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deal with with this cold weather is that
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the lens will frost up after probably
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about 30 minutes 45 minutes so I'll need
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a dew heater band which I'll wrap around
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the lens hood on the camera lens and
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that will keep it warm enough so it just
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doesn't frost over speaking of the lens
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if you're looking for a camera lens for
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astrophotography the Rokinon 135
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millimeter f2
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an extraordinary lens for this purpose
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it's a relatively affordable camera lens
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that can shoot with that fast F ratio of
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F 2.0 which is really important when it
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comes to astrophotography because you
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can really control the amount of light
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that's hitting that sensor in each
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exposure next up I'm going to hop
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outside set everything up go over some
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of the camera settings I'm gonna use to
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photograph this target tell you what the
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target is and my plans for shooting it
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tonight hopefully it stays clear I'm not
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sure if you can tell or not but it is
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bitterly cold out here it's about minus
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10 now and dropping so that's one of the
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main reasons I set up a rig like this on
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a night like tonight I want to spend as
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little time as possible out here so
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setting up a big robust deep sky rig
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with a telescope and a heavy tripod and
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a heavy mount that would take about 45
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minutes maybe to an hour to set it up
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properly and that would just crush my
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fingers so this takes about 10 minutes
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to set up I can still do my Astro
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photography thing even though it's so
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cold but I don't have to stay out with
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it for long periods of time so the next
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steps now are just waiting for it to get
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dark out so I can pull or align them out
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and then I'm going to slow over to my
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target focus and my target by the way is
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the horse head nebula in Orion and
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surrounding area it's just gonna be an
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incredible shot at 135 millimeters it's
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very important as I said that I put the
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dew heater bands on here to keep the
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lens warm so it doesn't frost over I've
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also got the dummy battery in the DSLRs
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so I can plug the DSLR into AC power
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that battery would die within an hour if
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I didn't yeah so far so good I'm going
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inside to warm up from them but I'm in
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Orion's belt
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you can actually see the Orion Nebula
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and the belt stars I'll zoom in so you
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can see it so that's actually the Orion
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Nebula
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there you can see that kind of a glow
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and then those are the three belt stars
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over here and the Horsehead Nebula is
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near this star here which is Allen
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attack so I know that it's in there so
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right now I'll know that I'll get the
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Horsehead Nebula and the Orion Nebula in
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a single field of view this is a great
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time to focus the lens - so I'm at f/2
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wide open and when i zoom in on these
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stars and adjust the focus ring it's a
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really nice tension on the focus ring on
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the Rokinon 135 there we go in a note
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and write a boat there is as sharp as I
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can get it and then I'm gonna click
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stops down click 2f 2.8
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that'll sharpen things up just a little
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bit so I'm going to be shooting my
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images at F 2.8 just to sharpen things
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up and lose a little bit of light
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gathering power but that's okay 2.8
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still pretty fast
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[Music]
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[Music]15915
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