Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)
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vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus, 



    
        

            Thomas V. Davis
vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus
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vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus

Getting plate-solving status, please wait...
vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus, 



    
        

            Thomas V. Davis
vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus
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vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus

Technical card


Astrometry.net job: 2126464

RA center: 20h 38' 17"

DEC center: +42° 8' 6"

Pixel scale: 1.716 arcsec/pixel

Orientation: 273.212 degrees

Field radius: 1.102 degrees


Resolution: 3777x2670

Locations: Thomas Davis, Inkom, ID, United States

Data source: Backyard

Description

vdB 136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus
Astro Systeme Austria N12 f/3.5 astrograph
Tele Vue 127is f/5.2 refractor
KAI-11000M/CM SBIG STL; M (Lum), CM (RGB)
Total Exposure Time: 5.6 hours; L:OSC 110:225 minuites
August 2010; Inkom, ID

Comments: vdB 136 is the yellow reflection nebula in the center of the image. Numerous emission nebulae are present in this area of the constellation Cygnus. Also present, but much less seen, are thin vales of dust which when imaged give a bluish tint to the sky background. Processing the data to bring out the faint dust does reduce the overall contrast of the image, but I feel that it is worth it to see this etheral dust. Areas where there is much less dust or more opaque dust appear black. The Diamond Ring Cluster is a star cluster in the image, but it can only be seen in infared.

vdB136: Size (arcmin): 7.5
Type: illuminating star inside nebula
Surface brightness: very faint
Color: red
Absorption: very strong
Illuminating star ID1: BD+41 3836
Illuminating star ID2: HD196819
Mag. of illuminating star: 7.55
Spectral type of star: K2.5IIb

Comments

Sky plot

Sky plot

Histogram

vdB136, GN 20.36.5 (RNeb), LDN 906, Diamond Ring Cluster (IR OC), [KC97c] G081.5+00.6 (HII), TGU H491 P10 (DNeb); Cygnus, 



    
        

            Thomas V. Davis