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Sh2-187 in LRGB

Technical card

Resolution: 4312x3109

Dates: Oct. 25, 2017Nov. 24, 2017Nov. 26, 2017Nov. 27, 2017

Astrnomik CLS-CCD: 844x60" -20C bin 1x1
Astrodon Blue Tru-Balance E-Series Gen 2: 141x60" -20C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 140x60" -20C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 140x60" -20C bin 1x1

Integration: 21.1 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 6.49 days

Avg. Moon phase: 40.83%

Bortle Dark-Sky Scale: 6.00 job: 1839779

RA center: 20.795 degrees

DEC center: 61.872 degrees

Pixel scale: 0.649 arcsec/pixel

Orientation: 301.676 degrees

Field radius: 0.479 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States


I should have never taken on such an obscure object with dark nebula in my light polluted red zone this time of year. I tried to make the best of it, though.



Douglas J Struble



Did some gradient work.

Sky plot

Sky plot


Sh2-187 in LRGB, 


        Douglas J Struble