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I agreeImaging telescope or lens:TS-Optics 8" Ritchey-Chrétien Pro
Imaging camera:ZWO ASI 294MC Pro
Mount:Sky-Watcher EQ6-R
Guiding telescope or lens:TS-Optics 8" Ritchey-Chrétien Pro
Guiding camera:ZWO ASI120MM-S
Focal reducer:Astro-Physics Telecompressor CCDT67
Software:Luc Coiffier DeepSkyStacker, Robin Glover SharpCap, Pleiades Astrophoto PixInsight
Accessories:ZWO Off-Axis Guider, Lacerta LED Flatfield-Box
Resolution: 8046x5457
Dates:Nov. 15, 2018, Nov. 16, 2018
Frames:
50x300" (gain: 120.00) -20C bin 1x1
Baader Neodymium (Moon & Skyglow): 86x120" (gain: 120.00) -25C bin 1x1
Integration: 7.0 hours
Darks: ~32
Flats: ~25
Flat darks: ~25
Bias: ~250
Avg. Moon age: 7.73 days
Avg. Moon phase: 53.68%
Bortle Dark-Sky Scale: 4.00
Temperature: 2.00
Astrometry.net job: 2374283
RA center: 23.463 degrees
DEC center: 30.656 degrees
Pixel scale: 0.403 arcsec/pixel
Orientation: 93.087 degrees
Field radius: 0.544 degrees
Locations: Backyard, Vechelde, Niedersachsen, Germany
Data source: Backyard
I tried several things with the triangulum galaxy. Image A has been taken under a good sky without any filter, while the moon was at about 50 %. Version B was taken under very humid conditions with the Baader Neodymium under nearly the same moon. Version C is both combined. Postprocessing was done nearly similar. With the Neodymium attached i always have problem with the background extraction process, you can see it at the corners which remain reddish. Version A looks cleaner to me than Version C, although in the combined image some details are clearer. The Neodymium helps to bring out the Halpha-Regions.
My conclusion: The Neodymium works best when used on the moon and the planets, for deep sky it can help to bring up some features, but postprocessing is getting harder. Second conclusion: One can take easily DS-objects under a bright moon without any filters, but the image will be not as good as it could have been.
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