Sh2
112 (Sharpless 112) Nebula in Cygnus : SII
/ H-Alpha / OIII with RGB overlaid for star colours
Click on the image to see it 2x this big (which is 50% of the full rez)
Here is the Pure RGB:
[from Wikipedia:
Sh2 -112 is an emission nebula in the constellation Cygnus. It is
located in the northern part of the constellation, about 1.5 ° to WNW
of the bright star Deneb. It is a circular H II region of apparent
dimensions of about 15 ', crossed by a dark band on its western side
oriented north-south. The star responsible for its excitation is
believed to be BD + 45 3216, a double blue star of spectral class O8V
and an apparent magnitude of 9.18. Estimates on the distance of this
star provide a value of 1740 parsecs (about 5670 light years
), which would place Sh2-112 in a particularly rich region of
the Orion Arm and physically very close to the great nebulous system of
Cygnus X. The nebula is located in a star- forming region
which also includes some sources of radio waves and the
molecular cloud [DBY94] 29, which has a mass of 1880 M ⊙ ;
however in a 1994 study a distance of 2100 parsecs is reported for this
last cloud.
Camera: Moravian G4 (16803) w Astrodon Gen II filters
Scope: AP155 EDF
RGB 9/9/9 x 10 minutes
SII / H-Alpha / OIII 16 / 12 / 18 x 20 min
Paramount MX guided with an ST402ME and Borg 60mm guidescope
TSX and CCD-Commander
All calibration and initial processing through to the RGB and separate
NB frames in PixInsight
Subsequent assembly of final image in Photoshop CC
Click on the image to see it 2x in size or to have your browser resize
it for your screen.
Captured May 2022
Lucknow, Ontario
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