The automation worked last night! I set
I know this is not as good as staying up all night and then just shooting them right after the lights but I need my sleep.
That should get you pretty close. I use a cheap illuminated flat panel that is used for tracing, I put a couple extra sheets of paper just to help filter it down a bit. You can adjust the brightness of the panel. As long as I can keep the exposure times to more than one second it works great!!jazzin wrote: ↑Sat May 15, 2021 3:39 pm The way I did it for this session is I left the camera in the focuser set the same way as when I took my light frames. Then this morning I brought my scope inside and strapped a white sheet over the objective end and then shot 35 frames with my histogram showing halfway across the graph.
jazzin wrote: ↑Sat May 15, 2021 3:39 pm The way I did it for this session is I left the camera in the focuser set the same way as when I took my light frames. Then this morning I brought my scope inside and strapped a white sheet over the objective end and then shot 35 frames with my histogram showing halfway across the graph.
Yes that is what I am using. I've always been not sure if I was doing them the right way but just doing them the way I read on here and other forums. Will have to take your suggestion into account next time.bobharmony wrote: ↑Sun May 16, 2021 2:35 amjazzin wrote: ↑Sat May 15, 2021 3:39 pm The way I did it for this session is I left the camera in the focuser set the same way as when I took my light frames. Then this morning I brought my scope inside and strapped a white sheet over the objective end and then shot 35 frames with my histogram showing halfway across the graph.
That should work well. The only question I have is whether you are using the Canon back-of-camera histogram or something else. My experience with the 60D is that the in-camera histogram reports on a stretched image and not what is in the actual RAW data. This leads to the flats being somewhat underexposed. You may want to get the "hump" 3/4 of the way to the right side to get a proper exposure.
My other experience with the Canon is that it isn't that fussy about needing exactly exposed flats. Some other cameras are less forgiving, but the Canon isn't as affected by it. Can't wait to see what you've got!
Bob
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