VdB 136 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: VdB136

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VdB 136

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VdB 136

This object is a yellow reflection nebula located about 2500 light years away in the constellation of Cygnus. Most deep sky objects are white, red or blue, so it is fun for me when a bright yellow object comes along.

Reflection nebula are typically blue, since blue light is more efficiently scattered by dust than red light. This reflection nebula is an interesting yellow orange color. The reflection nebula takes its color from the bright star that it surrounds, the magnitude 7.5 orange giant star HD 196819. The bright red HII emission nebula to the upper left of the yellow emission nebula is LBN 312. The dark nebula to the lower right of the yellow emission nebula is LDN 906.

An interesting aspect of this part of the sky is the bluish haze which is present in the bottom half of the image. My guess is that this is actually a number of faint blue reflection nebulae from all of the bright bluish stars in the bottom half of the image. Another interesting part of the image is the arcing crossed dark dust lanes which pass in front of the emission nebula, just to the left of the yellow reflection nebula.

This part of the sky is often referred to as the Diamond Ring Cluster, but that cluster is primarily seen in infrared images of this object. I don't really understand the penchant for naming objects after their infrared images, which few people can see.

Narrowband imaging
The refractors!
Cloudy Nights
ZWO ASI1600MM/QHY163M
vdB Reflection Nebula

HII-Dominated Nebulae
Reflection Nebulae
vdB Catalog (124/159)

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	2207149
PixInsight job	H9O1JN9EVBONMOD51DJNQP1DUHB3ZR8C
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h38m21s.393
RA (top/left)	20h40m35s.146
RA (top/right)	20h35m28s.474
RA (bottom/right)	20h36m09s.455
RA (bottom/left)	20h41m12s.801

Dec (center)	+42°10′03″.42
Dec (top/left)	+42°35′56″.90
Dec (top/right)	+42°26′07″.22
Dec (bottom/right)	+41°44′00″.68
Dec (bottom/left)	+41°53′42″.80

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VdB 136

VdB 136

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VdB 136

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