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Technical card

Resolution: 3221x2390

Dates: Sept. 17, 2012Sept. 18, 2012

Frames:
Astrodon Tru-Balance Generation 2 E-Series - B 50mm - NIR Blocked: 13x600" -30C bin 1x1
Astrodon Tru-Balance Generation 2 E-Series - G 50mm - NIR Blocked: 13x600" -30C bin 1x1
Astrodon Tru-Balance Generation 2 E-Series - L 50mm - NIR Blocked: 23x1200" -30C bin 1x1
Astrodon Tru-Balance Generation 2 E-Series - R 50mm - NIR Blocked: 13x600" -30C bin 1x1

Integration: 14.2 hours

Darks: ~40

Flats: ~15

Flat darks: ~40

Bias: ~40

Avg. Moon age: 1.54 days

Avg. Moon phase: 2.98%

Bortle Dark-Sky Scale: 2.00

Mean SQM: 21.52

Mean FWHM: 2.17

RA center: 340.320 degrees

DEC center: 37.769 degrees

Pixel scale: 1.531 arcsec/pixel

Orientation: 170.769 degrees

Field radius: 0.853 degrees

Locations:

Description

This image is a 14 hour integration of Lynds Bright Nebula LBN 438 captured at F/2.8 700mm FL with my ASA N10 Newtonian Astrograph. This is a dark nebula in a the constallation Lacerta.

The image was processed in PixInsight by Yuriy Toropin of Moscow Russia. Thank you Yuriy.

While the cold dark nebula is the focus of the image what is most interesting are the galaxies in the background. Take a look around and see how many you can find. I have discovered 11. The face on galaxy at the top just left of center is PGC 69439 and the face on galaxy just above the second red star to the left of the skinny center part of the nebula is PGC-69518 and is estimated to be 195 million lights years distant.

On the right hand side of the nebula, just to the left and up from the largest red star is PGC-69400, another face on galaxy.

Another clear face on galaxy can be found in the bottom left hand portion of the image, near the largest bright blue star. Just under the top left hand difraction spike is PGC 2101898.

Overall, I have counted 8 very distinct galaxies and over a dozen including some small smudges.

While the nebula is obviously the main focus of the image, the background galaxies are certainly a noteworthy subject of the image.

Comments

Dave (Photon)
License: None (All rights reserved) Nov. 2, 2013

Sky plot

Sky plot

Histogram

LBN 438 & Background Galaxies, Dave (Photon)