Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B343
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Barnard 343, 


            Gary Imm
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Barnard 343

Imaging telescopes or lenses: Takahashi TOA-130NFB

Imaging cameras: ZWO ASI 183MM Pro Cool

Mounts: Astro-Physics Mach1GTO

Guiding telescopes or lenses: Orion 60mm Guidescope

Guiding cameras: Orion StarShoot AutoGuider Pro Mono

Software: PixInsight  ·  Main Sequence Software Sequence Generator Pro  ·  Stark Labs PHD2 2.6.3

Filters: Astrodon Green 31mm Gen2 I-Series  ·  Astrodon Blue 31mm Gen2 I-Series  ·  Astrodon Lum 31mm Gen2 I-Series  ·  Astrodon Red 31mm Gen2 I-Series

Accessory: ZWO EFW  ·  Takahashi Flattener TOA-67  ·  Feathertouch Focuser Boss II Electronic Focusing Control

Dates:Nov. 23, 2019Nov. 24, 2019

Astrodon Blue 31mm Gen2 I-Series: 30x120" (gain: 111.00) -20C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 30x120" (gain: 111.00) -20C bin 1x1
Astrodon Ha 31mm 5nm: 24x300" (gain: 200.00) -20C
Astrodon Red 31mm Gen2 I-Series: 30x120" (gain: 111.00) -20C bin 1x1

Integration: 5.0 hours

Avg. Moon age: 26.65 days

Avg. Moon phase: 9.39%

Astrometry.net job: 3115916

RA center: 20h 13' 27"

DEC center: +40° 15' 28"

Pixel scale: 0.494 arcsec/pixel

Orientation: -178.421 degrees

Field radius: 0.443 degrees

Resolution: 5376x3594

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard


This object is a dark nebula located in the constellation of Cygnus at a declination of +40 degrees. Barnard 343 belongs to the Gamma Cygni Complex of clouds about 2,000 light-years away. Barnard is the main dark nebula at the center of the image and is about 10 arc-minutes long, which at that distance corresponds to an actual length of almost 10 light years.

I like the combination of the many dark nebulae, the colorful star field, the reddish emission regions, and particularly the interesting thin curving structures which subtly wind their way through the background. I am not exactly sure what these are. My best guess is that they are remnants of the cloud which have been shaped and eroded into pillar-like formations by the light from nearby stars, akin to the Pillars of Creation, but unlike that formation, the orientation of these structures is not aligned in any specific direction.