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 IC4592 - The Blue Horsehead Reflection Nebula 
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Do you see the horse's head? What you are seeing is not the famous Horsehead nebula toward Orion but rather a fainter nebula that only takes on a familiar form with deeper imaging. The main part of the above imaged molecular cloud complex is a reflection nebula cataloged as IC 4592. Reflection nebulas are actually made up of very fine dust that normally appears dark but can look quite blue when reflecting the light of energetic nearby stars. In this case, the source of much of the reflected light is a star at the eye of the horse. That star is part of Nu Scorpii, one of the brighter star systems toward the constellation of the Scorpion Scorpius. A second reflection nebula dubbed IC 4601 is visible surrounding two stars on the upper right of the image center. [Text adapted from APOD]

Pubblications "Flickr" Explore - July 24, 2015
Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: Canon 5D MkII - Baader Mod
Filters: OSC
Guiding Systems: Tecnosky 60/228 Guide Scope- SX Lodestar
Dates/Times: 17-19 June 2014
Location: Pragelato - Turin - Italy
Exposure Details: OSC => 80 = > (16x5) ISO 1600 [num x minutes]
Cooling Details: Ambient 14C
Acquisition: Maxim DL, Voyager, TheSkyX
Processing: PixInsight, PS CS5
Mean FWHM: 3.21
SQM-L: 20.60 / 21.11