Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  PK205+14.1  ·  Sh2-274
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Abell 21 (SH2-274) - The Medusa Nebula (H-Alpha), 



    
        

            Frank Breslawski
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Abell 21 (SH2-274) - The Medusa Nebula (H-Alpha)

Getting plate-solving status, please wait...
Abell 21 (SH2-274) - The Medusa Nebula (H-Alpha), 



    
        

            Frank Breslawski
Powered byPixInsight

Abell 21 (SH2-274) - The Medusa Nebula (H-Alpha)

Acquisition details

Dates:
Feb. 24, 2019 ·  Feb. 25, 2019 ·  Feb. 27, 2019
Frames:
Astronomik H-Alpha 6nm CCD: 45×900(11h 15′) -20°C bin 1×1
Integration:
11h 15′
Darks:
50
Flats:
10
Bias:
200
Avg. Moon age:
21.47 days
Avg. Moon phase:
56.95%
Bortle Dark-Sky Scale:
4.00

RA center: 07h28m58s.360

DEC center: +13°1938.53

Pixel scale: 0.927 arcsec/pixel

Orientation: 1.542 degrees

Field radius: 0.424 degrees

More info:Open 

Resolution: 2307x2365

File size: 2.4 MB

Locations: Home, Bergisches Land, Germany

Data source: Backyard

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Abell 21 (SH2-274) - The Medusa Nebula (H-Alpha), 



    
        

            Frank Breslawski