Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281
NGC 281, The Pacman Nebula, SH 2-184, 


NGC 281, The Pacman Nebula, SH 2-184
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NGC 281, The Pacman Nebula, SH 2-184

Technical card

Imaging telescopes or lenses: Astro-Tech AT8RC

Imaging cameras: SBIG STF-8300M

Mounts: Paramount MyT

Guiding cameras: QHY5L-II Mono

Focal reducers: CCDT67

Software: PixInsight  ·  Photoshop CS6  ·  Voyager

Filters: Baader Ha 36mm 7nm  ·  Astrodon SII 3nm Tru-Balance  ·  Astrodon OIII 3nm Tru-Balance

Accessory: Dew-Not DN09 Dew Heater  ·  SBIG OAG-8300  ·  Moonlite CSL 2.5" Threaded Focuser  ·  Kendrick Standard Dual Channel Dew Controller

Dates:Nov. 28, 2020Dec. 2, 2020Dec. 9, 2020

Baader Ha 36mm 7nm: 32x600" -20C bin 1x1
Astrodon OIII 3nm Tru-Balance: 29x600" -20C bin 2x2
Astrodon SII 3nm Tru-Balance: 35x600" -20C bin 2x2

Integration: 16.0 hours

Avg. Moon age: 17.82 days

Avg. Moon phase: 75.38%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 4087633

RA center: 0h 52' 48"

DEC center: +56° 38' 24"

Pixel scale: 0.931 arcsec/pixel

Orientation: 0.378 degrees

Field radius: 0.537 degrees

Resolution: 3320x2496

Data source: Backyard


What I find so beautiful about this object are the subtle shading changes and the wealth of detail, some of it obvious, some of it quite dim. This is a rewarding object for both beginners and more advanced astrophotographers.


Sky plot

Sky plot


NGC 281, The Pacman Nebula, SH 2-184, 



In these public groups

Sharpless2 Objects