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Sunday, October 20, 2013

A rarely imaged object, the Sharpless106, Sh2-106

Sh2-106, The Hourglass nebula, an emission nebula in Cygnus
Ra 20h 27m Dec +37° 22′

Image is in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
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A closeup


There are not too many images around about this little fellow.
Sharpless 106, the Hourglass Nebula, locates in constellation Cygnus approximately at distance of 2000 light years. This is kind of a small object, an apparent size is about four arc minutes (Moon is about 30 arc minutes.) There is a young star at the center of the nebula, S106IR. The solar vind, a radiation pressure, from the young star is responsible for the gas cloud's hourglass like shape. 

I think, there is a hint of the outer shock front visible in my image. It locates symmetrically at both side of the central nebula .

Image in mapped colors

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Buy a photographic print from HERE

Technical details

Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
A light, 33 iterations, deconvolution added at 50% weight in CCDStack2.
Levels, curves and color combine in PS CS3.

Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera
Image Scale, ~0,8 arc-seconds/pixel
15 x 1200s exposures for H-alpha emission
3x1200s exposures for the O-III
3x1200 exposures for the S-II
Total 7h of exposures

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