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NGC 7635, bubble nebula

Technical card

Imaging telescope or lens: Skywatcher ED 80/600

Imaging camera: Canon EOS 30D

Mount: Skywatcher NEQ-5

Guiding telescope or lens: Skywatcher 9x50 finder

Guiding camera: QHYCCD QHY5L-IIc

Focal reducer: Skywatcher 0.85x Focal Reducer

Software: Christian Buil Iris 5.59Photoshop CS2

Resolution: 3463x2375

Dates: June 18, 2017June 19, 2017

Frames:
32x300" ISO800
Astronomik Canon Clip Ha 12nm: 35x300" ISO800

Integration: 5.6 hours

Darks: ~50

Flats: ~30

Bias: ~100

Avg. Moon age: 23.20 days

Avg. Moon phase: 38.93%

Bortle Dark-Sky Scale: 3.00

Astrometry.net job: 1625903

RA center: 350.104 degrees

DEC center: 61.375 degrees

Pixel scale: 2.522 arcsec/pixel

Orientation: 159.288 degrees

Field radius: 1.471 degrees

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Aurélien CHAPRON
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NGC 7635, bubble nebula, Aurélien CHAPRON