Cave Nebula

Cave Nebula


Constellation: Cepheus
Ra: 22h 56min 48s
Dec: +62deg 37min
Distance: 2,900 light years
Image Size: 36' x 36'
North: Upper right



The Cave Nebula is catalogued as Sharpless 2-155 and Caldwell 9 as an emission nebula in Cepheus about 2900 light years distant. According to, Sh2-155 interacts with the Cepheus B molecular cloud that is ionized by stars from the Cepheus OB3 association. It is a place of massive star formation.

Exposure: 10.25 hrs Total; 5.25 RGB, 2 hrs Lum, 3 hrs H-a
Telescope: RCOS 16
Mount: Software Bisque Paramount ME
Oag: Astrodon MonsterMOAG
Acquisition: CCD AutoPilot4
Calibration: CCDStack2
Observatory Site: Sierra-Remote Observatories, Shaver Lake, CA
Camera: Apogee U16M
Filters: Astrodon 3nm H-a, Gen 2 LRGB
Guider: SBIG ST-402
Camera Operation: MaximDL4.62
Processing: Photoshop CS3
Image Date: 07/14/2009

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