IC 1318 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 37 gam Cyg · B347 · IC 1318 · NGC 6910 · PK078+00.1 · PK079+00.1 · Sadr · Sh2-108 · The star Sadr (γCyg) · gamma Cyg nebula

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IC 1318

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IC 1318

This object is the beautiful and complex region around the bright star Gamma Cygni, also named Sadr. It is the central star of one of my favorite asterisms, the Northern Cross. The bright star, magnitude 2.2, is huge compared to our Sun, being 12 times the mass, 150 times the radius, and emitting 33,000 times as much energy. All of this energy plays havoc with the sensor on my ASI1600MM camera, requiring some serious processing to get the star back to somewhat of a circular star shape instead of a mess of squarish reflections.

Surrounding the dominating star are two interesting objects. The Butterfly Nebula, in the bottom left corner, is a bright emission nebula designated NGC 1318. It is sprinkled with stars and split by a 20 light year wide dark dust lane. The brilliant star cluster NGC 6910 lies in the top center of the image. The above objects lie at different distances from us, with Gamma Cygni about 1800 light-years away and IC 1318 and NGC 6910 ranging from 2,000 to 5,000 light-years away. This entire area is dominated by hydrogen gas emission, but oxygen and sulfur also are present and contribute to the narrowband color spectrum seen in the image.

Cloudy Nights
ZWO ASI1600MM/QHY163M
Narrowband imaging
Sharpless2 Objects

Emission (Full NB) Nebulae
Secret Deep Catalog (Complete)
Sharpless Catalog (182/313)

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	3188822
PixInsight job	JWXL60MNIYZXJP6K66J99FKQIKKZ61O8
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h24m52s.45
RA (top/left)	20h30m33s.78
RA (top/right)	20h16m47s.68
RA (bottom/right)	20h19m23s.58
RA (bottom/left)	20h32m47s.100

Dec (center)	+40°16′07″.5
Dec (top/left)	+41°31′57″.6
Dec (top/right)	+40°54′00″.2
Dec (bottom/right)	+38°59′17″.6
Dec (bottom/left)	+39°36′09″.1

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