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Black Eye Galaxy M64

M64 Galaxy – 25×180 sec @ Gain 11, Offset 100, QHY183c at -20C, Baader UHC-S filter, Televue TV-85 at F/5.6.

Another Black Eye galaxy shot to add to my collection.  Not quite the guiding I was getting earlier in the evening, but it is not too bad, either.  Minimal processing done to this one.

M35 Open Cluster on Jan 14, 2021

M35 Open Cluster – 26×180 sec @ gain 11, offset 100, QHY183c at -20C, Baader UHC-S filter, Televue TV-85 at F/5.6.

I was having a good night of steady seeing and really good guiding (<1.13 arc sec error) for this object and the Pleiades on this night.  I went until it was time to flip and the guiding was starting to degrade.   78 minutes worth of subs was good enough to show this object well.

M45, The Pleiades on Jan 14, 2021

M45 – 32×180 sec @ Gain 11, Offset 100, QHY183c at -20C, Baader UHC-S filter, Televue TV-85 at F/5.6.

Not too bad for a session from the metro LP zone!  Only 96 minutes, but it was enough with these settings to show quite a bit of nebulousity.  I used the unity gain setting (11) and that made a big difference in hot pixels and noise.   My other shots at a gain of 20 were plagued by hot pixels that SharpCap 3.2 doesn’t seem to be able to deal with very well.  I like this much better and there is just as much data buried in there as in the higher gain shots.

Thor’s Helmet – Now at 4.6 Hrs of Integration

Thor’s Helmet. 3 sessions with the last being 25 x 3 minutes of integration.

Over 4.6 hours of integration with a variety of exposures including 3 min, 2 min and 30 sec sub-images. All were taken with a QHY183c camera at -20C or -15C cooling, an Optolong L-eNhance filter and a Televue TV-85 at F/5.6.

thors-helmet-25×180-g20-o100-lnh-qhy183c_-20C-85f5_6-crop plus thors-helmet-30×120-g20-284×30-g37-o200-lnh-qhy183c_-15C-85f5_6-v2a

Last Imaging Session of 2020

Ghost Nebula Combined Data. 60×180 sec, Gain 20, Offset 100, QHY183c at -20C, L-eNhance filter, Televue TV-85 at F/5.6.

The December 26/27 weekend of 2020 was the last imaging session of the year.   I managed to bag good data for all the objects on this page.   The Heart and Soul Nebulae are still works in progress, though.

Soul Nebula 2-Panel Mosaic. 40×180 sec top panel and 42×180 sec for bottom panel. Gain 20, offset 100, QHY183c at -20C, L-eNhance filter, Televue TV-85 at F/5.6.
Cone Nebula Combined Data. 29×240 sec at Gain 11, Offset 100, and 183×30, gain 42, offset 42, QHY183c at -20C, L-eNhance filter, Televue TV-85 at F/5.6.
Tease for Heart Nebula Mosaic work in progress.

Horse Head Nebula – Winter of 2020 Version

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.