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 LDN673 "Mayan glyphs" in Aquila 
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Part of a dark expanse that splits the crowded plane of our Milky Way galaxy, the Aquila Rift arcs through the northern hemisphere's summer skies near bright star Altair and the Summer Triangle. In silhouette against the Milky Way's faint starlight, its dusty molecular clouds likely contain raw material to form hundreds of thousands of stars and astronomers eagerly search the clouds for telltale signs of star birth. This telescopic image looks toward the region at a fragmented Aquila dark cloud complex identified as LDN 673. The dark clouds in Aquila are estimated to be some 600 light-years away. At that distance, this field of view spans about 290 light-years. [Text adapted from APOD]

Pubblications "Flickr" Explore - September 18, 2016
Optics: Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: Moravian G3-16200
Filters: Optolong LRGB 2"
Guiding Systems: SX Lodestar
Dates/Times: 8-29 July 2016 / 5 August 2016 / 6-7-8 September 2016
Location: Gias Bandia (Cuneo) - Pragelato (Turin) - Col Basset - Sestriere (Turin) - Italy
Exposure Details: L:R:G:B => 190:90:90:90 = > (38x5):(18x5):(18x5):(18x5) All Bin1 [num x minutes]
Cooling Details: -25 °C
Acquisition: Maxim DL/CCD, Voyager
Processing: CCDStack2+,PixInsight, PS CS5
Mean FWHM: 1.44 / 2.89
SQM-L: 21.89 / 20.64 / 21.54