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Contains:  The star 68Cyg
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Sh2-119 Bok Globules and Dust Lanes, 





    
        

            Gary Lopez
Sh2-119 Bok Globules and Dust Lanes

Sh2-119 Bok Globules and Dust Lanes

Technical card

Resolution: 3520x4656

Dates:Aug. 12, 2019Aug. 13, 2019Aug. 14, 2019Aug. 15, 2019

Frames:
Astrodon Ha 3nm-31mm: 280x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 79x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 120x180" (gain: 139.00) -15C bin 1x1

Integration: 23.9 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 13.39 days

Avg. Moon phase: 96.75%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 2870844

RA center: 319.456 degrees

DEC center: 43.585 degrees

Pixel scale: 1.299 arcsec/pixel

Orientation: 44.199 degrees

Field radius: 1.053 degrees

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard

Description

Sharpless 119 is a large emission nebula covering about three degrees of the sky in the constellation Cygnus. It is not often photographed, likely the result of its proximity to its photogenic neighbors, the North America and Pelican nebulas, just two degrees east. The large, bright star in left of center is is 68 Cygni. I framed this image to highlight the Bok globules and dark dust lanes in the southern region of the nebula.

While I found that the Ha emission signal for this nebula was reasonably strong, I found the SII was much weaker, and the OIII was very faint, yielding very little structure. My challenges to gathering these data were exacerbated by the nearly full Moon. On the positive side, I enjoyed four successive days of clear skies. All together I amassed more than 24 hours of data, 14 hours of good-quality Ha alone.

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Author

GWLopez
Gary Lopez
License: None (All rights reserved)
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Sh2-119 Bok Globules and Dust Lanes, 





    
        

            Gary Lopez