Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  Sh2-274
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Abell 21 (SH2-274) - The Medusa Nebula (Bicolor), 



    
        

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

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



    
        

            Frank Breslawski
Powered byPixInsight

Abell 21 (SH2-274) - The Medusa Nebula (Bicolor)

Equipment

Imaging Telescopes Or Lenses
Lacerta Newton ohne Namen 250/1200
Imaging Cameras
Astrel Instruments AST8300
Mounts
EQ8
Filters
Astronomik H-Alpha 6nm CCD · Astronomik OIII 6nm CCD
Accessories
GPU Pal Gyulai GPU 2" Aplanatic Coma Corrector
Software
PixInsight 1.8 · Zipproth GmbH Straton 2.0
Guiding Cameras
Lacerta MGEN2 with 9x50

Acquisition details

Dates:
Feb. 24, 2019 ·  Feb. 25, 2019 ·  Feb. 26, 2019 ·  Feb. 27, 2019
Frames:
Astronomik H-Alpha 6nm CCD: 45x900" (11h 15') -20°C bin 1x1
Astronomik OIII 6nm CCD: 36x900" (9h) -20°C bin 1x1
Integration:
20h 15'
Darks:
50
Flats:
10
Bias:
200
Avg. Moon age:
21.64 days
Avg. Moon phase:
55.22%
Bortle Dark-Sky Scale:
4.00

RA center: 07h28m58s.450

DEC center: +13°1938.60

Pixel scale: 0.925 arcsec/pixel

Orientation: 1.544 degrees

Field radius: 0.424 degrees

More info:Open 

Resolution: 2307x2365

Locations: Home, Bergisches Land, Germany

Data source: Backyard

Description

Bad weather here, so I decided to rework on my data of Abell 21. :-) Even if I only gathered bicolor data (H-Alpha and OIII), I wanted to get that typical impression of a Hubble pallet. I think it's been worth it. :-)

Also known as Abell 21 and SH2-274, the Medusa Nebula is an old planetary nebula some 1500 light-years away in the constellation Gemini.

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Abell 21 (SH2-274) - The Medusa Nebula (Bicolor), 



    
        

            Frank Breslawski