Lorenzo Comolli's Astronomy HomePage

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This nebula was a challenge for my setup. That's faint! Even if I had a lot of noise, anyway I'm presenting here the result.
All the field is full of red background, and the main red nebula in the center is Sh2-150, while the blue one on the left is VdB154. A little above the two lies GN 22.27.6, a small and yellowish nebula. I'm unaware of the name of the red arched nebula on the right (maybe not named), but the associated dark nebula is LDN1205. The brighter star near the center is 26 Cep, and a faint and blue nebula seems to encircle it.

Technical Data
Optics	TEC 140
Focal Length	1011 mm
Focal Ratio	f/7.2
Exposure Time	3h50m (single exp of 10 min)
CCD	Canon EOS 5D with Baader filter
Sensitivity	800 ISO
Location	Colle dell'Agnello (CN, Italian Alps) at 2700 m height
Date	20 August 2012
Mount	Gemini G-41
Tracking	Lodestar on an 80mm f/5 refractor
Temperature and humidity	T= +13°C, RH=55%
Sky brightness at zenith (with SQM-L)	21.4-21.5 mag/arcsec^2
Notes	North at left. Some veils ruined part of the night and so the exposure was limited to less than 4 hours; a little more would have helped in reducing the background noise.