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Technical card

Imaging telescope or lens: TS Imaging Star102

Imaging camera: sony A7S astrodon

Mount: Skywatcher HEQ5 PRO

Guiding telescope or lens: Orion 50mm deluxe guidescope

Guiding camera: Orion Starshoot autoguider

Software: Luc Coiffier's DeekSkyStackerphd maxsony remote camera controlAdobe ps

Filter: Astronomik cls

Resolution: 4041x2694

Dates: Aug. 19, 2017

Frames: ASTRONOMIK CLS clip filter for Sony: 483x30" ISO3200

Integration: 4.0 hours

Darks: ~120

Flats: ~20

Bias: ~30

Avg. Moon age: 26.47 days

Avg. Moon phase: 10.22%

Bortle Dark-Sky Scale: 7.00

Astrometry.net job: 1694853

RA center: 349.633 degrees

DEC center: 61.009 degrees

Pixel scale: 3.283 arcsec/pixel

Orientation: 75.378 degrees

Field radius: 2.215 degrees

Comments

Author

Jean-Pierre Bertrand
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NGC 7635 en grand champ, Jean-Pierre Bertrand