The Iris Nebula, NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus.
NGC 7023 is actually a cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. Nebula apparent magnitude 6.8

LRGB Image taken 27 & 28 June 2017 from Lockwood Valley, California

Lum 165 minutes 1x binned, 15 min sub-exposures
RGB 75:75:60 minutes 2x binned, 15 min sub-exposures

Total Exposure Time = 6.25 hours