NGC 1931/Sh2-237 The Fly Nebula in Narrowband (modified SHO Foraxx) w RGB stars (Auriga) - Nov 13 to 18, 2022
Planewave CDK12.5 - AIS6200MM
A-P 1100GTO AE, Antlia V pro 3nm NB filters
H,O,S: (25,23,16 x 420s exposures, Bin 2x2, Gain 200)
R,G,B: (9,7,12 x 210s exposures, Bin 2x2, Gain 100)
Total Integration Time = 9.1 hours
The Fly Nebula is considered an analogous, yet smaller version of the Great Orion Nebula. The Orion Nebula is actually much closer (1350 ly vs 7000ly), and not really that much larger. Both represent a stellar nurseries with very newly formed stars in a "Trapezium" style small cluster. These stars are extremely bright and haven't yet substantially blown away the remaining gases that formed both them and likely future siblings. In the distant future all that will remain is a star cluster replacing the molecular cloud that will have been used up or dissipated.
The image here was actually shot in November of 2022 as a secondary target to use up spare and precious winter clear sky. The data had been placed in a "to process" directory that I had nearly forgotten. Its a good thing that this nebula is bright, because normally I would want additional integration time.
I further experimented with my modified "Foraxx" SHO palette that I am liking more and more. It is great with such as high dynamic range subject, as it can partially replace brightness level with hue change in a subject such as this.