Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 281
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Pacman Nebula, 



    
        

            José J. Chambó
Pacman Nebula
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Technical card

Imaging telescopes or lenses: GSO Newton 8" f/4

Imaging cameras: Canon EOS 350D / Digital Rebel XT

Mounts: LXD75

Guiding telescopes or lenses: Bresser Skylux 70/700

Guiding cameras: Meade DSI

Software: PHD guiding  ·  DeepSkyStacker  ·  PixInsight LE  ·  APT - Astro Photography Tool

Accessory: Teleskop-Service Coma Corrector


Dates:Dec. 23, 2011Dec. 26, 2011Jan. 19, 2012Jan. 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


Basic astrometry details

Astrometry.net job: 125843

RA center: 0h 52' 54"

DEC center: +56° 37' 40"

Pixel scale: 4.525 arcsec/pixel

Orientation: 175.906 degrees

Field radius: 0.906 degrees


Resolution: 620x413

Locations: Vallés - Valencia (Spain), Vallés, Valencia, Spain

Description

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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Pacman Nebula, 



    
        

            José J. Chambó