B33, The Horse Head Nebula and Flame Nebula Region. Dec 17/18, 2020. 46×180 sec, QHY183c at -20C, Gain 20, Offset 100, Optolong L-eNhance filter, Televue TV-85 at F5.6, Bortle 7-8 zone metro area. Clear, transparent, 40F.
I had a little trouble with streetlights and two satellite trails for this shot, but I salvaged what I could. I like the way the 3 minute sub-images are working out, though, now that I’ve tuned the guiding to get usable subs at that exposure setting. That exposure seems to be the sweet-spot for this camera and filter combo at my location.
Below is the image above, but with data add in from my last imaging session of it from a full moon night on Halloween, 2020. I like the way the portrait and landscape versions had diffraction spikes at 90 degrees to each other:
Horse Head and Flame Nebula Region. 262 x 30 sec at gain 37, offset 200, plus 46×180 sec, QHY183c at -20C, Gain 20, Offset 100, Optolong L-eNhance filter, Televue TV-85 at F5.6, Bortle 7-8 zone metro area. Clear, transparent, 40F.
The PacMan Nebula, Dec 17/18th, 2020. 120×30 sec Gain 30 and 57×180 sec Gain 20, Offset 100, QHY183c at -20C, Optolong L-eNhance filter, Televue TV-85 at F5.6, Bortle 7-8 zone metro area. Clear, transparent, 40F.
What started out as a quick imaging session to just take a look at this turned into a multi-hour session. I did 3 one hour stacks and one with 45 minutes, with one of those 1 hour stacks shot with the 30 second subs, A nice haul of good data that was easy to process.
Combined image data from January 2020 and Dec 2020. 280×30 sec and 51×180 sec added together for this image. the 30 sec subs with UHC-S filter and 180 sec subs with the L-eNhance filter.
IC 410, The Tadpoles and Comet ATLAS. 3 hours in 60 x 3 minute sub-images. QHY183c at -20C, Optolong L-eNhance, Televue TV-85 at F/5.6. Star-Freeze Version.IC 410, The Tadpoles and Comet ATLAS. 3 hours in 60 x 3 minute sub-images. QHY183c at -20C, Optolong L-eNhance, Televue TV-85 at F/5.6.Tadpoles Detail View
Christmas Tree Cluster and Cone Nebula – 183×30 sec, gain 42, offset 42, and 49×120 sec in 2 runs, 30×120 and 19×120. Bortle Red zone metro conditions, but clear and above average transparency skies. Seeing was average. QHY183c camera cooled to -15C. gain 20, offset 100, an L-eNhance filter and Televue TV-85 at F/5.6. Sharpcap 3.2 for acquisition. Taken Dec 1, 2020 during a full moon night.
IC1795, NGC896, Tombaugh 4 and Mel 15 with parts of IC805, otherwise known as the Heart Nebula. 60×60 sec, Gain 25, Offset 100, QHY183c at -15C, Optolong L-eNhance filter, Televue TV-85 at F/5.6.
Jellyfish Nebula on Nov 24, 2020. 46×120 sec at 20 Gain and 100 Offset, added 237×30 sec @ Gain 37, offset 15, QHY183c at -15C, L-eNhance filter, Televue TV-85 at F/5.6.
