Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  IC1590  ·  NGC 281  ·  NGC281  ·  Sh2-184
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NGC 281 Pacman Nebula, 



    
        

            Luís Ramalho
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Getting plate-solving status, please wait...
NGC 281 Pacman Nebula, 



    
        

            Luís Ramalho
Powered byPixInsight

Technical card

Imaging telescopes or lenses: Takahashi TOA-130F

Imaging cameras: SBIG ST8 XE

Mounts: Takahashi EM-200 Temma 2

Focal reducers: Takahashi Field Flattener

Software: Difraction limited MaximDL 6  ·  Adobe Photoshop CS5

Filters: Astronomik Ha 6nm  ·  Astronomik SII 12nm - 1.25"  ·  Astronomik OIII 12nm - 1.25"

Accessory: Robofocus  ·  SBIG CFW-8A


Dates:Dec. 11, 2006Dec. 12, 2006Dec. 13, 2006Dec. 14, 2006

Frames:
Astronomik Ha 6nm: 18x1200" bin 1x1
Astronomik OIII 12nm - 1.25": 12x1200" bin 1x1
Astronomik SII 12nm - 1.25": 10x1200" bin 1x1

Integration: 13.3 hours

Avg. Moon age: 22.49 days

Avg. Moon phase: 46.48%


Astrometry.net job: 4130884

RA center: 0h 52' 56"

DEC center: +56° 39' 27"

Pixel scale: 1.856 arcsec/pixel

Orientation: -94.100 degrees

Field radius: 0.474 degrees


Resolution: 1530x1020

Locations: Luís Ramalho Observatory, Lisbon, Portugal

Data source: Backyard

Description

The NGC 281 nebula ("Pacman Nebula") is a star formation site in the direction of the Cassiopeia constellation. It is possible to see in the image the IC 1590 open cluster (in the center), which formed only a few million years ago. The brightest star in this cluster is a binary system, whose energy ionizes the gas that makes up the nebula. The blue color corresponds to the emission of double-ionized oxygen and the color "orange" to the ionized sulfur. The dust zone to the right of the center probably hides stars in the process of forming. Bok globules against the brightest background of the nebula are also perfectly visible. The distance to NGC 281 is about 10,000 light years.

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NGC 281 Pacman Nebula, 



    
        

            Luís Ramalho

In these public groups

Takahashi Refractors