Simeis 57 The Propeller Nebula, emission nebula and HII region in Cygnus also known as DWB 111

L(Ha)R(Ha)GB
taken on the nights of July 21,23 and 27 2016 Highland Lakes NJ. William Optics Zenitstar 80, Televue reducer/corrector, QSI 583wsg

L(Ha + L) R(Ha + R) GB
Luminance 25 x 5 minutes unbinned
H-alpha 20 x 10 minutes unbinned
RGB 14 each @4 minutes binned 2x2

Total integration time 493 minutes
Aquired in Astroart, stacked and calibration frames applied in DSS, processed in Adobe Photoshop