Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  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

Getting plate-solving status, please wait...
The Iris and the Clouds of Cepheus, 



    
        

            Gabe Shaughnessy
Powered byPixInsight

The Iris and the Clouds of Cepheus

Imaging telescopes or lenses: Astro-Physics 92mm F6.65 Stowaway

Imaging cameras: ZWO ASI6200MM Pro

Mounts: Astro-Physics Mach1AP GTO CP4

Guiding telescopes or lenses: Astro-Physics 92mm F6.65 Stowaway

Guiding cameras: ZWO Optical ASI174MM

Focal reducers: Astro-Physics 0.8x CCD Telecompressor (92TCC)

Software: PixInsight  ·  Voyager  ·  Astro-Physics Command Center (APCC) Pro Software  ·  PHD2

Filters: LRGB

Accessory: Pegasus Astro Ultimate Powerbox v2  ·  Starlight Instruments Focuser Boss 2 HSM


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

Frames:
LRGB: 81x300" bin 1x1
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.

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