Messier 43 - De Mairan's Nebula

Messier 43 also known as De Mairan's Nebula or NGC 1982, is a star-forming nebula the constellation of Orion. It was discovered by the French scientist Jean-Jacques d'Ortous de Mairan some time before 1731, then catalogued by Charles Messier in 1769. It is physically part of the Orion Nebula (Messier 42), separate from that main nebula by a dense lane of dust known as the northeast dark lane. It is part of the much larger Orion molecular cloud complex. Like Messier 42, it is 1,360 ± 30 ly away.

This is an enlarged portion of a much more recent photo that was taken with the same equipment, but for a longer duration and was processed differently to bring out the red light from ionized hydrogen.

Equipment:
OTA: Apertura 6" Ritchey-Chretien reflector (f/9)
Reducer: Astro-Physics CCDT67 0.67x reducer (f/6 overall)
Filter: SVBONY CLS City-Light-Suppression filter
Camera: ZWO ASI183MC Pro Cooled Color camera (20.1 mp)
Guide Scope: SVBONY SV106 50mm f/3.8
Guide Camera: ZWO ASI120MM Mini Guide camera
120x30s subs (1 hour) stacked in SharpCap 4.1 with dark & flats
Processed in GraXpert, Topaz Denoise AI, Astrosharp, and Siril