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Contains:  4 Cep, Iris Nebula, NGC 7023, NGC7023, T Cep, The star 4Cep, VdB139
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The Iris and the Clouds of Cepheus, 



    
        

            Gabe Shaughnessy
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The Iris and the Clouds of Cepheus

Technical card


Dates:July 24, 2020July 27, 2020Aug. 14, 2020Aug. 18, 2020

Frames:
Chroma LRGB: 81x300" bin 1x1
Chroma LRGB: 98x300"

Integration: 14.9 hours

Avg. Moon age: 16.26 days

Avg. Moon phase: 22.92%


Astrometry.net job: 3788492

RA center: 20h 50' 42"

DEC center: +67° 35' 32"

Pixel scale: 1.569 arcsec/pixel

Orientation: -2.820 degrees

Field radius: 2.188 degrees


Resolution: 8631x5104

Data source: Backyard

Description

The Iris nebula on the left is a bright reflection nebula in the constellation Cepheus and lies some 1300 light years away. Throughout the frame are dense dusty regions that block out the light of background stars. Some starlight still passes, but is more red in color. The preferential scattering of blue light allows the red light to pass through, in the same way sunsets are red, and our sky is blue. This also gives the Iris nebula its distinctive blue color near the bright star SAO 19158.

Throughout the frame are additional dusty regions that stand out from the background including LDN1158 to the right.

Comments

Author

AstroGabe
Gabe Shaughnessy
License: None (All rights reserved)
2430
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Revisions

  • The Iris and the Clouds of Cepheus, 



    
        

            Gabe Shaughnessy
    Original
  • Final
    The Iris and the Clouds of Cepheus, 



    
        

            Gabe Shaughnessy
    B

Sky plot

Sky plot

Histogram

The Iris and the Clouds of Cepheus, 



    
        

            Gabe Shaughnessy