With the moon nearly full i did some experimenting. I wanted to treat small high surface brightness DSOs like planets and try to get high resolution images.
I chose the same bright nebula I recently imaged with the EOS Ra. I put the ZWO cam on the 10 inch, took darks and flats in Firecapture, then took about 8 minutes of 1 sec exposures at Max gain. I sec short enough that tracking errors are minimal as I couldnt actively guide as I'm using the guide cam as the primary imager.
I captured it as a .ser file then ran it in Autostakkert. I used 2x drizzle. I then used Registax Wavelets then finished it with Photoshop.
Scott
Cool, this is pretty close to what it looked like visually through the 100" Hooker on Mt Wilson, when I got to have a look at it, back in 2018, except it had a faint but distinct teal/blue hue...even at just 38deg elevation, t'was rather amazing!
Thanks all. I was going to use video on the EOS Ra to do the same, but with the 2x converter taking it to f11, the video was too noisy. I can slow video shutter to 8th sec but the lowest actual recorded frame rate is 25 fps and there's isn't a region of interest crop option as there is with the ZWO and other dedicated astronomy cameras.
