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Vdb 126 Vulpecula Reflection Nebula, 





    
        

            Jerry Macon
Vdb 126 Vulpecula Reflection Nebula

Vdb 126 Vulpecula Reflection Nebula

Technical card

Resolution: 4656x3520

Dates:Aug. 31, 2019Sept. 1, 2019

Frames:
Astrodon Gen 2 L 36mm: 192x100" (gain: 99.00) -12C bin 1x1
Astrodon Gen 2 RGB 36mm: 173x100" (gain: 99.00) -16C bin 1x1

Integration: 10.1 hours

Avg. Moon age: 1.84 days

Avg. Moon phase: 4.12%

Bortle Dark-Sky Scale: 4.00

Temperature: 10.00

Astrometry.net job: 3060599

RA center: 291.548 degrees

DEC center: 22.753 degrees

Pixel scale: 0.701 arcsec/pixel

Orientation: 177.828 degrees

Field radius: 0.568 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.
Using L from the TV NP127is refractor effectively eliminates the spikes from the AG12.
This image was unguided.

An interesting star field along the Milky Way in the constellation Vulpecula (the "fox"). The mottling and brownish color is due to the veritable infinitude of background stars as one looks in the direction of the edge of the Milky Way. Vdb126 is a reflection nebula that consists of the blue nebula in the center left of the image. It is associated with the hot B-class giant star (HD189218) directly behind it. The temperature is insufficient to ionize the surrounding hydrogen cloud, but it is sufficient to scatter photons traveling through the cloud in a process called Raleigh scattering. Generally, hydrogen atoms in the nebula scatter short-wavelength light (blue and violet) and let longer wavelengths (red, orange, yellow, green) pass through undisturbed. The result is that the nebula is bluish in color.

Also noteworthy in this image are: (1) The blue circle center right, which is another reflection nebula associated with the same star; (2) the dark nebula (black in color) that is interstellar gas that blocks what lies beyond.
(Richard Hammar)

Comments

Author

jmacon
Jerry Macon
License: Attribution Creative Commons
2112
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Vdb 126 Vulpecula Reflection Nebula, 





    
        

            Jerry Macon