Contains: IC 1795, NGC 896
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The North Bear Nebula - IC1795 - Hybrid palette - LRGB composition

Technical card

Resolution: 3234x2379 job: 759214

RA center: 36.400 degrees

DEC center: 61.866 degrees

Pixel scale: 2.097 arcsec/pixel

Orientation: 100.989 degrees

Field radius: 1.169 degrees

Locations: Observatoire personnel, Vérossaz, Valais, Switzerland


Data from POSS-II Survey and David Lindemann

Captured 08/21/2015, 08/25/2015, 08/26/2015 and 08/28/2015 with Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (, Apogee Alta U8300 monochrome @-30°C and Astrodon narrowband H-alpha, SII, and OIII 5nm filters on 10micron GM2000 HPS II

76 x 10 minutes SII unbinned = 12h40
36 x 10 minutes H-alpha unbinned = 6h
36 x 10 minutes OIII = 6h

Total exposure 24h40

POSS-II Survey ( 9 panels of 60x60 arc/min for Red and Blue data)

Software: MaximDL to capture - CCDStack to calibrate, register, normalize, data reject and combine - Photoshop CS5 and PixInsight for non-linear streching, star reduction, color composition and adjustment



David Lindemann

Sky plot

Sky plot


The North Bear Nebula - IC1795 - Hybrid palette - LRGB composition, 


        David Lindemann