« on: January 04, 2014, 11:17:34 PM »
I've used various astro software over the years, but I think only once or twice did I manually stack images. I do all my stacking with DeepSkyStacker - free and quick to learn. The resulting 16 bit tiff is opened in Adobe Camera Raw, tweaked and sent to Photoshop for final work. I typically take 90 second exposures but sometimes shorter exposures for brighter objects like globulars and planetary nebulae. I've been off work for two weeks and had ONE night suitable for any kind of astro work, and not very well suited at that, upper atmosphere turbulence was horrible and I was doing some imaging of Jupiter. Comparing the use of a modified webcam to the crop video with a 60D for a Registax presentation with my local astronomy club next week. I use a 60D, an astro modified 40D and once the weather clears I'll be using a 6D. I have assorted clip filters for the 40D, they allow me to image from my light-polluted back yard. The 40D is somewhat noisy and prone to banding, but the trade off is Ha sensitivity. I gotta believe a modified 6D would be exquisite for astro.
I would love to have a cooled CCD imager, but it's difficult to justify to myself, let alone SWMBO. Our observing season in the FL Panhandle is just too short, and the CCD would be suitable for ONLY astronomy, unlike a DSLR.
Without tracking, I only shoot wide field or time lapse. I've got two CG5 GOTO mounts, one carries a C8 and the other a small refractor with a piggybacked camera/telephoto combo. I've a non-GOTO fork-mounted C9.25 that tracks phenomenally well....but that scope seems to get 5lbs heavier every year. (I realize this isn't a 'for sale' site, but if anyone with a younger/stronger back is visiting NW Florida and interested yer welcome to come take a look.)
Here's an assortment of images, the Trapezium with un-modified 40D (C9.25 with 2XTC), M51 with un-modified 60D (C8 with f/6.3 focal reducer) and the rest with a modified 40D (300mm/4L or 4 inch f/5 refractor).
Other such stuff is at pbase(dot)com/emagowan/astrophotography