VdB 150, VdB 149, LBN 535 and PGC 67671

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This very faint nebula in Cepheus was a challenge for me with a DSLR, and I got over 6 hours of exposure over two nights. The VdB 150 nebula in truth is only the blue nebula at the top, while the other blue one on the bottom is VdB 149. The large dust nebula is catalogued as LBN 535. On the right the PGC 67671 galaxy is visible through the dust that is absorbing its light and making yellowish.

Technical Data
Optics TEC 140
Focal Lenght 1011 mm
Focal Ratio f/7.2
Exposure Time 6h10m (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
3 and 4 August 2011
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= +10°C, RH=75%
Sky brightness at zenith (with SQM-L) 21.6 mag/arcsec^2
Notes A very faint and difficult nebula in Cepheus. Two nights of exposures were collected to get a decent SNR.

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