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Barnard 147  (HHGB), 


Barnard 147  (HHGB)

Barnard 147 (HHGB)

Technical card

Resolution: 2713x2178

Dates:Oct. 18, 2016Oct. 23, 2016

Orion Extra Narrowband Filter Ha 1.25": 29x720" bin 1x1
Astrodon LRGB 1.25" E series: 19x180" bin 1x1

Integration: 6.8 hours

Avg. Moon age: 20.15 days

Avg. Moon phase: 67.39%

Bortle Dark-Sky Scale: 7.00 job: 1305293

RA center: 301.668 degrees

DEC center: 35.357 degrees

Pixel scale: 0.481 arcsec/pixel

Orientation: -170.184 degrees

Field radius: 0.232 degrees

Locations: Back Yard, Lubbock, TX, United States


Barnard 147 is a dark nebula in Cygnus near the open cluster NGC 6781. It is reminiscent of a sea serpent or perhaps a dragon. This image was produced with hydrogen alpha as luminance, with the Ha channel also mapped to red, plus normal blue and green subs for color, to create an "HHGB" image. It has been rather windy here every night for the past month, so it was a real challenge to get a sharp image at this focal length (2000 mm).



License: None (All rights reserved)

Sky plot

Sky plot


Barnard 147  (HHGB),