An eerie blue glow and ominous columns of dark dust highlight M78 and other bright reflection nebula in the constellation of Orion. The dark filamentary dust not only absorbs light, but also reflects the light of several bright blue stars that formed recently in the nebula. Of the two reflection nebulas pictured above, the more famous nebula is M78, in the image center, while NGC 2071 can be seen to its upper right. The same type of scattering that colors the daytime sky further enhances the blue color. M78 is about five light-years across and visible through a small telescope. M78 appears above only as it was 1600 years ago, however, because that is how long it takes light to go from there to here. M78 belongs to the larger Orion Molecular Cloud Complex that contains the Great Nebula in Orion and the Horsehead Nebula.
NGC1977, a reflection nebula 1/2 degree northeast of the Orion Nebula is also catalogued as Sharpless 279. Lum,R,G,B: 27 x 300s each Total exposure time: ~9 hours Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) Mount: Astro-Physics Mach 1 Scope: Celestron Edge HD 8" (effective FL: 2172mm) Adaptive Optics Unit: SXV-AO-LF Image Aquisition software MaximDL Registed, Calibrated and Stacked and Post Processed with PixInsight 1.8
This is result of stacking the following sub-exposures: L: 40 x 10m R,G,B: 13 x 10m each Total exposure time: 13 hours Luminance frames captured on Aug 23 2014 RGB frames captured on Aug 30 2014 Location: Blue Canyon, CA Equipment used: Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) Mount: Astro-Physics Mach 1 Scope: Celestron Edge HD 8" (effective FL: 2170 mm) Adaptive Optics Unit: SXV-AO-LF Image Aquisition software MaximDL Calibrated, Registered, Stacked and Post Processed with PixInsight 1.8