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Barnard 175 and vdB 152, 


Barnard 175 and vdB 152

Barnard 175 and vdB 152

Technical card

Imaging telescope or lens:Skywatcher 8" F4 Newton

Imaging camera:Canon EOS 600Da

Mount:Skywatcher AZ EQ6 GT

Guiding telescope or lens:8x50 Finder with Lacerta MGEN Autoguider

Focal reducer:Baader RCC 1

Software:Photoshop CS5FitsworkPixInsight LETheli

Resolution: 2500x1667

Dates:Oct. 3, 2013

Frames: 18x1200" ISO400

Integration: 6.0 hours

Avg. Moon age: 27.98 days

Avg. Moon phase: 2.68%

Mean SQM: 21.40

Temperature: -5.00 job: 83477

RA center: 332.962 degrees

DEC center: 70.700 degrees

Pixel scale: 2.074 arcsec/pixel

Orientation: -85.096 degrees

Field radius: 0.865 degrees


Barnard 175 is the long dark nebula, vdB 152 ist the blue reflection nebula at the end. A lot went wrong when imaging this object: distance corrector - camera was too short, due to strong wind I had to throw away 1/3 of the frames and in the most frames there is a reflection across the whole image which to remove was a lot of work. Canon EOS 600Da, Newton 8" f/4 with RCC-I, AZ EQ-6, Guiding with MGEN; 18x20min, ISO 400; processed with Theli (stacking, color calibration), Fitswork (RGB combine, L stretch, 32 -> 16bit), Adobe Camera Raw (denoise, sharpen), Photoshop (L + RGB combine, levels, curves, etc., create star mask), PixInsight LE (shrink stars)



License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Barnard 175 and vdB 152,