Reflection-emission nebula "Cocoon" (Cocoon Nebula, IC 5146, Caldwell 19, Barnard 168)

Reflection-emission nebula "Cocoon" (Cocoon Nebula, IC 5146, Caldwell 19, Barnard 168)
Red color - region of ionized hydrogen (H II)

Equipment:
Camera Canon EOS 200 Da.
Telescope Synta SkyWatcher 150/750, F/5
Mount HEQ-5 Pro
Bahtinov mask
Polar finder camera iOptron iPolar
Coma corrector Baader MPCC Mark III
Guidescope SVBONY 60/240, F/4
Guide camera ZWO ASI 120 Mini
Flat-panel Gemini 190 mm

Software for imaging:
Astrophotography Tool, SharpCap (polar alignment), EQ-Mode, ASCOM, Cartes Du Ciel, PHD2

Suburb of Chelyabinsk, Kremenkul area.
Red light pollution zone. Class 7 on the Bortle scale.

Imaging 15-16.05.2026
Total 131 Light frames of 60 seconds each + 20 Dark frames + 20 Bias frames + 20 Flat frames
ISO 800

Imaging 16-17.05.2026
Total 175 Light frames of 60 seconds each + 20 Dark frames + 20 Bias frames + 20 Flat frames
ISO 800

Total integration time Σ=5h06'00"

Software for post-processing:
DeepSkyStacker, FitsWork, FITStacker, Lightroom, StraNet2GUI, Photoshop, Topaz Denoise AI