Contains: Crescent nebula, NGC 6888
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Crescent nebula Hoo 32hours exposure

Technical card

Resolution: 2500x1908

Dates: April 16, 2017April 22, 2017

Astronomik Ha 12nm 2": 131x600" -20C bin 2x2
Astronomik O3 12nm 2": 30x1200" -20C bin 2x2

Integration: 31.8 hours

Darks: ~20

Bias: ~1136

Avg. Moon age: 22.32 days

Avg. Moon phase: 48.46%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 3.00

Temperature: 12.00 job: 1681811

RA center: 303.022 degrees

DEC center: 38.304 degrees

Pixel scale: 0.978 arcsec/pixel

Orientation: 81.031 degrees

Field radius: 0.427 degrees


Crescent Nebula 31h50 exposure in Hoo with full moon in april.
The object was low in this season, That is why the resolution could have been better.



Maxime Tessier

Sky plot

Sky plot


Crescent nebula Hoo 32hours exposure , Maxime Tessier