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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 top left. 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. [Text from APOD]

Pubblications "Flickr" Explore - April 28, 2018
Optics: GSO RC 10" F8 2000mm - Astrograph Ritchie-Chrétien
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: QSI 640 WSG
Filters: Astrodon LRGB I Series Gen II
Guiding Systems: SXV-AO-LF Active Optics - SX Lodestar
Dates/Times: 29 Jan 2016 / 05 Feb 2016 / 04-29-30-31 Oct 2016 / 30 Dec 2016 / 15-17 Feb 2017 / 15-17 Nov 2017
Location: Pragelato - Turin - Italy
Exposure Details: L:R:G:B => 1150:180:180:160 = > (115x10):(18x10):(18x10):(16x10) Color Bin2 [num x minutes]
Cooling Details: -25°C
Acquisition: Maxim DL/CCD, Voyager
Processing: CCDStack2+, PS 2018 CC
Mean FWHM: 1.57 / 3.28"
SQM-L: 20.18 / 20.88