Messier 46
This open cluster in the constellation Puppis caught Charles Messier's eye in 1771 but it is doubtful that he noticed planetary nebula NGC 2438, which pops out in color in my filtered, long exposure image.
Tech Stuff: Borg 71FL/1.08x Borg Flattener/ZWO ASI 1600MC/IDAS LPS-V4 filter. 16 minutes of 4 second unguided exposures, captured in SharpCap livestacks and processed with PixInsight and Topaz Denoise AI. From my yard in Westchester County, NY, Bortle 7 (SQM-L reading 18.4).
I will be teaching techniques used for this image for New York City's Amateur Astronomers Association starting in February, see aaa.org/event/urban-astrophotography-deep-sky-imaging-202...
Messier 46
This open cluster in the constellation Puppis caught Charles Messier's eye in 1771 but it is doubtful that he noticed planetary nebula NGC 2438, which pops out in color in my filtered, long exposure image.
Tech Stuff: Borg 71FL/1.08x Borg Flattener/ZWO ASI 1600MC/IDAS LPS-V4 filter. 16 minutes of 4 second unguided exposures, captured in SharpCap livestacks and processed with PixInsight and Topaz Denoise AI. From my yard in Westchester County, NY, Bortle 7 (SQM-L reading 18.4).
I will be teaching techniques used for this image for New York City's Amateur Astronomers Association starting in February, see aaa.org/event/urban-astrophotography-deep-sky-imaging-202...