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I agreeImaging telescope or lens:Canon EF 400mm f/5.6L USM
Imaging camera:Canon EOS 70Da
Mount:SkyWatcher Star Adventurer
Guiding telescope or lens:Orion Mini 50mm Guide Scope
Guiding camera:Lacerta MGEN 2
Resolution: 5320x3370
Dates:July 29, 2017, July 31, 2017
Frames:Astronomik CLS-CCD Clip Filter: 113x120" ISO1600
Integration: 3.8 hours
Darks: ~33
Bias: ~44
Avg. Moon age: 7.25 days
Avg. Moon phase: 48.61%
Bortle Dark-Sky Scale: 6.00
Astrometry.net job: 1676685
RA center: 10.673 degrees
DEC center: 41.276 degrees
Pixel scale: 2.152 arcsec/pixel
Orientation: -21.849 degrees
Field radius: 1.882 degrees
Locations: Derendingen 454m, Solothurn, SO, Switzerland
This is my second M31 Andromeda attempt at 400mm fl. Now focused with the Bahtinov mask, modified DSLR and more acquired lights compared to last year (2016: 130x90s, Now: 113x120s). Only 2 nights. It was the max I could reach due to the bad wheater... really bad this year :-(
And I tried to process more subtle this time (not that much color correction).
I like the result :-)
Last year image:
f/5.6
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