Quote:I would have to agree about with you keeping things simple but I've taken it to the extreme of shooting single exposures of 3 mins with a modded 5DII and an FSQED at F3.6 no flats just auto dark and although the guys that shoot one object all night then process it all day get a better result for show piece stuff I don't think it’s worth it, the really faint stuff is another matter.
Robert The more I learn, The more there is to learn! Orange Zone Dark Site 3 Mounts 4 Imaging Cameras 3 Guide Cameras OTA's = yes
Quote:In terms of "faster capturing" the newer camera's do allow for higher ISO settings which increases the gain as in a webcam. But the real items that would allow for faster recording of faint light with lower noise levels would be larger aperture telescopes with fast f/ratios. The larger the scope/F/ratio, the faster ability to go deep in short order. I sometimes image through a Meade 16" F/10 system but I incorporate a focal reducer to speed up imaging by 4x with a much larger field. I took a single image at this setup of a comet at ISO 3200 and I did have to use some noise reduction applications to get it comparable to a multi-stacked image. For a single one minute exposure it came out very good.
Quote:Chris, your 15 seconds images are outstanding to say the least, but another point which needs to be factored in is the amount of equipment to gel with being an instant astrophotographer. For me, obtaining an image with minimal equipment in the fastest possible times is what I would describe as instant gratification. I have seen some images with just 10 seconds exposures wide field which baffles me still. I wish I had those type of skies, another thing to be factored in.
Quote:I would suggest a cut-off, that if it takes more than 60 seconds to generate a good quality image it is taking too long. In my view, there should be no or little post-processing and no agility in techniques required.
Quote:How about DeepSkyStacker Live?... Is that what you have in mind?
Quote:I spend less than 10 minutes on post-processing and I always finish my image(s) before going to bed. I usually toss the subs as soon as I stack to save space on my laptop.
Quote:Maybe if we call it Minimalist or Fast Track imaging would cover what we are trying to do.
I lost count of my scopes. Now I just want mobility. I came, I saw, I bought some interesting accessories, and put names to faces: NEAF 2012, ASAE 2012, SWAP 2013, ASAE 2013.
Quote:But the big one is available optics to go to lower f/#s....I have to disagree with part of the supposition of short exposures being a 90% solution. The longer exposures still have less fixed pattern noise, and the cameras really only reward low f/# imaging trains.
Austin www.austingrantphotography.com www.flickr.com/bentonastronomy
Quote:Where the DSLRs do well is high signal.But this comes at a cost- the very low back focus.../-/...DSLR has built in filters and a compact light form factor, so this is possible....going wheels up without a PC following the telescope around is awesome.
Quote:I think you should revise one of the opening statements.
Quote:I take it you didn't use any noise reduction software , the images show a lot of promise but a bit noisy for my taste . The only way I can get images I'm happy with is using Topaze Denoise and Adjust , I find them both quick and easy to use.
Quote:I just read the fine print...254mm APO
Quote:Quote:Where the DSLRs do well is high signal.But this comes at a cost- the very low back focus.../-/...DSLR has built in filters and a compact light form factor, so this is possible....going wheels up without a PC following the telescope around is awesome. You bring up some important points. And thanks for your brightness factor details; I presume the 'factor' is in support of the premise of this discussion?
Quote:Partly- the DSLR format isn't going to have an infinite horizon for sensitivity improvement. The quantum efficiency of the professional cameras is not going to appear in DSLRs without a technology breakthrough.
Quote:So, I kind of feel the DSLRs are operating in a niche. If they are going to completely supplant other cameras, they are have to grow in ways their main user base is not strongly interested in. For example, the up and coming application in the mainstream world is HD video. While it's nice to see Canon throwing a bone to the astrophotography crowd now and then, the cameras they are doing it with aren't even as sensitive as the 3rd party mods.
Astrophotograher's Guide to the Deep Sky
A Guide to DSLR Planetary Imaging
A Beginner's Guide to DSLR Astrophotography
An Advanced Guide to DSLR Astrophotography
Photoshop for Astrophotographers
Quote:18 x 8 second exposures at ISO 6400 at f/2.8