Nebulae  Back to Photo Gallery - Nebulae
 The Snake and the Scorpion 
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Dark nebulae snake across a gorgeous expanse of stars in this telescopic view toward the pronounceable constellation Ophiuchus and the center of our Milky Way Galaxy. In fact, the twisting shape seen here is well known as the Snake Nebula. It is also listed as Barnard 72 (B72), one of 182 dark markings of the sky cataloged in the early 20th century by astronomer E. E. Barnard. Unlike bright emission nebulae and star clusters, Barnard's nebulae are interstellar dark clouds of obscuring gas and dust. Their shapes are visible in cosmic silhouette because they lie in the foreground along the line of sight to rich star fields and glowing stellar nurseries near the plane of our Galaxy. Many of Barnard's dark nebulae are themselves likely sites of future star formation. Barnard 72 is about 650 light years away. With bluish star 44 Ophiuchi is located at 20 light-years at the estimated distance of the Snake Nebula [Text adapted from APOD]

Pubblications "Astronomy Now" Issue - May, 2023
Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: Moravian G3-16200
Filters: Astrodon E Series Gen II LRGB 50mm
Guiding Systems: SX Lodestar
Dates/Times: 9-18 Jun 2018 / 06-13 Jul 2018
Location: Pragelato - Turin / S.Anna di Vinadio - Cuneo - Italy
Exposure Details: L:R:G:B => 120:65:65:65 = > (24x5):(13x5):(13x5):(13x5) All Bin1 [num x minutes]
Cooling Details: -25 C
Acquisition: Voyager
Processing: CCDStack2+, PS CS5
Mean FWHM: 1.23 / 1.89
SQM-L: 20.37 / 21.73