Orion Molecular Cloud Complex
Acquisition Details
Camera: Nikon D3400
Lens: 35mm
Aperture: f/2.8
ISO: 800
Subexposure time: 30 seconds
Total subexposures: 695
Total integration time: ~5h 47m
Tracking: Sky-Watcher Star Adventurer 2i
Light pollution: Bortle 6–7
Capture Dates
13 February 2026
17 February 2026
18 February 2026
Calibration
Dark frames (captured per night)
Flat frames (captured per night)
Bias frames (reused master bias)
Processing Summary
Stacked in DeepSkyStacker
RBF background extraction and denoising in GraXpert
SPCC color calibration in Siril
Further processing in PixInsight:
Histogram stretching
Star separation
Separate processing of starless and stars layers
Curves adjustments (contrast and color balance)
Local Histogram Equalization on nebula
MorphologicalTransformation and curves adjustments for star reduction
Recombined stars and starless image