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





    
        

            Douglas J Struble
Sh2-173 • The Phantom of the Opera in HaRGB

Sh2-173 • The Phantom of the Opera in HaRGB

Technical card

Resolution: 3980x3184

Dates:Oct. 20, 2019Oct. 28, 2019

Frames:
Astronomik Deep-Sky B: 30x60" -20C bin 1x1
Astronomik Deep-Sky G: 30x60" -20C bin 1x1
Astronomik Deep-Sky R: 30x60" -20C bin 1x1
Astronomik Ha 6nm 1.25'': 641x120" (gain: 200.00) -20C bin 1x1

Integration: 22.9 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 10.74 days

Avg. Moon phase: 30.64%

Bortle Dark-Sky Scale: 7.00

Astrometry.net job: 3251521

RA center: 0h 22' 1"

DEC center: +61° 44' 56"

Pixel scale: 1.086 arcsec/pixel

Orientation: 78.341 degrees

Field radius: 0.769

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard

Description

Sh2-173 is a nebula in Cassiopeia constellation called the “Phantom of the Opera”. This name derives from its resemblance to a theatrical mask.

Physically this is a Ha region with a diameter of 77 light years, located at about 8800 light years away on the Perseus Arm, one of the greatest spiral arms of Milky Way in correspondence of the OB5 Cassiopeia association.

Comments

Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
2835
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Sh2-173 • The Phantom of the Opera in HaRGB, 





    
        

            Douglas J Struble

In these public groups

Sharpless2 Objects