Contains: M 52, NGC 7654, Bubble nebula, NGC 7635
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Bubble Nebula - NGC7635 - Hybrid palette - LRGB composition

Technical card

Resolution: 3264x2393 job: 781840

RA center: 350.148 degrees

DEC center: 61.059 degrees

Pixel scale: 2.096 arcsec/pixel

Orientation: 101.935 degrees

Field radius: 1.178 degrees


Data from POSS-II Survey and David Lindemann

Captured 08/11/2015, 08/12/2015, and 08/20/2015 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

27 x 10 minutes SII unbinned = 4h30
20 x 10 minutes H-alpha unbinned = 3h20
19 x 10 minutes OIII unbinned = 3h10

Total exposure 11h

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


Bubble Nebula - NGC7635 - Hybrid palette - LRGB composition , 


        David Lindemann