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VdB 136 Yellow Reflection Nebula, 





    
        

            Jerry Macon
VdB 136 Yellow Reflection Nebula

VdB 136 Yellow Reflection Nebula

Technical card

Resolution: 4500x3358

Dates:Sept. 11, 2019Sept. 13, 2019

Frames:
Astrodon Gen 2 L 36mm: 175x100" (gain: 99.00) -12C bin 1x1
Astrodon Gen 2 RGB 36mm: 190x100" (gain: 99.00) -16C bin 1x1

Integration: 10.1 hours

Avg. Moon age: 13.26 days

Avg. Moon phase: 96.60%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 3041830

RA center: 309.587 degrees

DEC center: 42.071 degrees

Pixel scale: 0.700 arcsec/pixel

Orientation: 177.941 degrees

Field radius: 0.546 degrees

Locations: Dark Star Observatory, Taos, New Mexico, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Images from the following two scopes (piggybacked) contributed to this image:
AG12+ASI1600MM at .70 asec/pix (RGB)
TV127is+ASI183MM at .75 asec/pix. (L)
They were all registered to the best R image taken on the AG12.
This image was unguided.

The original version of this was just awfull! Why didn't someone say something. Somehow I deluded myself into thinking those colors were real. Actually I had a very bad color gradient and it took multiple applications of DynamicBackgroundExtraction to correct it. Color gradients are a real risk doing RGB with a full moon.

This image shows an unusual and rarely imaged yellow reflection nebula. Light from the red giant star in the center is being reflected in our direction by particles of soot and gas behind the star, giving the diffuse yellow glow of VdB136. The area is surrounded by faint H-alpha emissions and interesting dark lanes too. This patch of sky lies about 2 degrees from the Cygnus the Swan’s brightest star, Deneb. VdB 136 is a around 2510 light years distant.

Comments

Author

jmacon
Jerry Macon
License: Attribution Creative Commons
2722
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Revisions

  • VdB 136 Yellow Reflection Nebula, 





    
        

            Jerry Macon
    Original
  • Final
    VdB 136 Yellow Reflection Nebula, 





    
        

            Jerry Macon
    B

Sky plot

Sky plot

Histogram

VdB 136 Yellow Reflection Nebula, 





    
        

            Jerry Macon