Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  VdB136
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VdB 136, 



    
        

            Gary Imm
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VdB 136

Getting plate-solving status, please wait...
VdB 136, 



    
        

            Gary Imm
Powered byPixInsight

VdB 136

Imaging telescopes or lenses: Takahashi TOA-130NFB

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Astro-Physics Mach1GTO

Guiding telescopes or lenses: Orion 60mm Guidescope

Guiding cameras: Orion StarShoot AutoGuider Pro Mono

Focal reducers: Takahashi Reducer TOA130R

Software: Main Sequence Software Sequence Generator Pro  ·  PixInsight  ·  Stark Labs PHD2 2.6.3

Filters: Astrodon Ha 31mm 5nm  ·  Astrodon Green 31mm Gen2 I-Series  ·  Astrodon Blue 31mm Gen2 I-Series  ·  Astrodon Red 31mm Gen2 I-Series

Accessory: Feathertouch Focuser Boss II Electronic Focusing Control  ·  ZWO EFW


Dates:Aug. 1, 2018Aug. 2, 2018

Frames:
Astrodon Blue 31mm Gen2 I-Series: 60x60" (1h) (gain: 139.00) -10C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 60x60" (1h) (gain: 139.00) -10C bin 1x1
Astrodon Ha 31mm 5nm: 24x300" (2h) (gain: 139.00) -10C bin 1x1
Astrodon Lum 31mm Gen2 I-Series: 120x60" (2h) (gain: 139.00) -10C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 60x60" (1h) (gain: 139.00) -10C bin 1x1

Integration: 7h

Avg. Moon age: 19.46 days

Avg. Moon phase: 76.91%


RA center: 20h38m21s.393

DEC center: +42°1003.42

Pixel scale: 0.782 arcsec/pixel

Orientation: -9.801 degrees

Field radius: 0.596 degrees

More info:Open 


Resolution: 4404x3286

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

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.

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