Imaging telescope or lens:GSO Newton 8" f/4
Imaging camera:Canon EOS 350D / Digital Rebel XT
Mount:LXD75
Guiding telescope or lens:Bresser Skylux 70/700
Guiding camera:Meade DSI
Software:PHD guiding, DeepSkyStacker, APT - Astro Photography Tool, PixInsight LE
Accessory:Teleskop-Service Coma Corrector
Resolution: 1200x800
Dates: Dec. 23, 2011, Dec. 26, 2011, Jan. 19, 2012, Jan. 22, 2012
Frames: 110x210" ISO400
Integration: 6.4 hours
Darks: ~16
Flats: ~11
Bias: ~100
Avg. Moon age: 21.06 days
Avg. Moon phase: 6.03%
Bortle Dark-Sky Scale: 6.00
Mean SQM: 18.95
Mean FWHM: 4.53
Temperature: 7.75
Astrometry.net job: 125843
RA center: 13.225 degrees
DEC center: 56.628 degrees
Pixel scale: 4.525 arcsec/pixel
Orientation: 175.906 degrees
Field radius: 0.906 degrees
Locations: Vallés - Valencia (Spain), Vallés, Valencia, Spain
Data source: Unknown
Placed into constellation of Cassiopeia near star Shedir, NGC 281 is a emission nebula colloquially named as Pacman Nebula because your resemblance with character of this videogame. Discovered by Barnard at 1883. Furthermore, it contains the open cluster IC 1590 whose brightest star HD 5005 is a multiple system formed by 5 stars with a separation between 1.4 and 15.7 arcseconds.
More info into the Blog C O M E T O G R A F I A (in Spanish)
This image was the AAPOD on April 01, 2012
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