Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 281
Pacman Nebula (NGC 281) in LRGB + Ha + O3, 



    
        

            Scott Davis
Pacman Nebula (NGC 281) in LRGB + Ha + O3
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Pacman Nebula (NGC 281) in LRGB + Ha + O3

Technical card

Imaging telescopes or lenses: Explore Scientific ED102 APO

Imaging cameras: QSI 683ws-8

Mounts: Celestron CGEM Hypertuned

Guiding telescopes or lenses: Orion ShortTube 80

Guiding cameras: Orion StarShoot Autoguider

Focal reducers: Astro-Tech AT2FF

Software: Sequence Generator Pro  ·  RegiStar  ·  Photoshop CS6

Filters: Astrodon 31mm B Tru-Balance E-Series Gen 2  ·  Astrodon 31mm G Tru-Balance E-Series Gen 2  ·  Astrodon 31mm R Tru-Balance E-Series Gen 2  ·  Astrodon 31mm Ha 3nm FWHM  ·  Astrodon 31mm OIII 3nm FWHM  ·  Astrodon 31mm L Tru-Balance E-Series Gen 2

Accessory: Robofocus


Dates:July 25, 2016July 28, 2016July 29, 2016July 31, 2016Aug. 1, 2016Aug. 2, 2016Aug. 3, 2016Aug. 4, 2016

Frames:
Astrodon 31mm B Tru-Balance E-Series Gen 2: 20x180" (1h) -20C bin 2x2
Astrodon 31mm G Tru-Balance E-Series Gen 2: 20x180" (1h) -20C bin 2x2
Astrodon 31mm Ha 3nm FWHM: 17x1200" (5h 40') -20C bin 1x1
Astrodon 31mm L Tru-Balance E-Series Gen 2: 65x180" (3h 15') -20C bin 1x1
Astrodon 31mm OIII 3nm FWHM: 23x1200" (7h 40') -20C bin 1x1
Astrodon 31mm R Tru-Balance E-Series Gen 2: 20x180" (1h) -20C bin 2x2

Integration: 19h 35'

Darks: ~30

Flats: ~30

Flat darks: ~30

Bias: ~30

Avg. Moon age: 19.48 days

Avg. Moon phase: 16.75%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 1184345

RA center: 0h 52' 30"

DEC center: +56° 39' 25"

Pixel scale: 3.119 arcsec/pixel

Orientation: 88.989 degrees

Field radius: 0.598 degrees


Resolution: 620x591

Locations: My Backyard, Clovis, California, United States

Description

The Pacman Nebula is an area of ionized gas in the constellation Cassiopeia. Catalogued as NGC 281, it sits approximately 9,500 light year from Earth. While very difficult to glimpse visually telescope, this nebula is rather beautiful and interesting when photographed.

The red area of the nebula shows Hydrogen gas; blue shows Oxygen.

Comments

Sky plot

Sky plot

Histogram

Pacman Nebula (NGC 281) in LRGB + Ha + O3, 



    
        

            Scott Davis