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Contains:  NGC 103, The star 12Cas
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Sh2-173, the Phantom of the Opera, 





    
        

            Roberto Marinoni
Sh2-173, the Phantom of the Opera

Sh2-173, the Phantom of the Opera

Technical card

Resolution: 4209x3489

Dates:Sept. 19, 2018Sept. 20, 2018

Frames:
Baader Blue 2": 18x300" -20C bin 1x1
Baader Green 2": 14x300" -20C bin 1x1
Baader Ha 7nm 2": 20x1200" -20C bin 1x1
Baader Red 2" : 14x300" -20C bin 1x1

Integration: 10.5 hours

Darks: ~15

Flats: ~21

Flat darks: ~15

Avg. Moon age: 10.09 days

Avg. Moon phase: 77.10%

Mean SQM: 20.68

Astrometry.net job: 2317040

RA center: 5.428 degrees

DEC center: 61.704 degrees

Pixel scale: 1.360 arcsec/pixel

Orientation: 273.975 degrees

Field radius: 1.033 degrees

Locations: Promiod, Aosta, Val d'Aosta, Italy

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

The name of this faint nebula in Cassiopeia derives from its resemblance to a theatrical mask. Physically this is a H II region with a diameter of 77 light years, located at about 2700 parsec (about 8800 light years) away.

Comments

Author

Bluesky71
Roberto Marinoni
License: None (All rights reserved)
1061
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Revisions

  • Sh2-173, the Phantom of the Opera, 





    
        

            Roberto Marinoni
    Original
  • Final
    Sh2-173, the Phantom of the Opera, 





    
        

            Roberto Marinoni
    B

Sky plot

Sky plot

Histogram

Sh2-173, the Phantom of the Opera, 





    
        

            Roberto Marinoni

In these public groups

Imagers of Italy