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LBN 325, 


            Gary Imm
LBN 325
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LBN 325

Technical card

Dates:Oct. 21, 2019Oct. 23, 2019Oct. 24, 2019

Astrodon Blue 31mm Gen2 I-Series: 40x60" (gain: 139.00) -15C
Astrodon Green 31mm Gen2 I-Series: 40x60" (gain: 139.00) -15C
Astrodon Ha 31mm 5nm: 48x300" (gain: 300.00) -15C
Astrodon OIII 31mm 3nm: 48x300" (gain: 300.00) -15C
Astrodon Red 31mm Gen2 I-Series: 40x60" (gain: 139.00) -15C

Integration: 10.0 hours

Avg. Moon age: 23.92 days

Avg. Moon phase: 32.27%

Basic astrometry details job: 3050851

RA center: 20h 19' 30"

DEC center: +46° 2' 27"

Pixel scale: 1.739 arcsec/pixel

Orientation: 345.922 degrees

Field radius: 1.367 degrees

Resolution: 4520x3405

Locations: Backyard (Mag 20.8 - New Moon), Onalaska, Texas, United States

Data source: Backyard


This objects captures many objects - Ha emission nebulae, a dark nebula, and a supernova remnant - in the constellation of Cygnus at a declination of +46 degrees. Cygnus is my favorite constellation in the sky for imaging, with many uncommon gems like the ones in this image.

The supernova remnant is easiest to see because it is the only OIII (cyan) object and it is in the foreground. This is SNR G082.2+5.3, believed to be about 5,000 light years away. The width of the remnant in this image is almost 100 light years.

The Ha emission nebulae are numerous, including LBN 313, 325, 326, and many DWB objects. These are likely behind the SNR and unrelated to it. I could not find any distance estimates for these Ha nebulae.

The dark nebula designated as Barnard 345 is in the top left of the image but is very faint.



Gary Imm
License: None (All rights reserved)

Sky plot

Sky plot


LBN 325, 


            Gary Imm