Sh2-155: Cave Nebula in Cepheus

 


SH2-155


Object Data

Object type: Diffuse Nebula
Size: 50' x 30'
Magnitude: 7.7
Constellation: Cepheus
Distance: 2400 ly 
   
Notes:
Sh2-155 is a large complex nebula containing emission, reflection, and dark nebulosity.  The molecular cloud is ionized by a nearby hot O-type star.

 

Exposure Data

Date: 5/10/24
Location: Lockwood Observatories, Descanso, CA
Telescope: DSI RC10c; 1867 mm fl at f/7.3
Camera: FLI 6303e with Astrodon LRGB filters
Mount: AP 1100 GTO CP3
Exposure times: 7 x 15 min each of Ha, SII and OIII
Exposure time total: 5 hrs 15 min
Notes: Color mapped using Hubble palette: Red=SII; Green = Ha; Blue = OIII. 

Cropped: FOV: 36.9 x 31.1 arc min.

   

 

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