Celestial hemisphere:  Northern  ·  Constellation: Lacerta (Lac)
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LBN 437, 



    
        

            Gary Imm
Powered byPixInsight

LBN 437

Getting plate-solving status, please wait...
LBN 437, 



    
        

            Gary Imm
Powered byPixInsight

LBN 437

Acquisition details

Dates:
July 30, 2019 ·  July 31, 2019 ·  Aug. 1, 2019
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 60×60(1h) (gain: 139.00) -15°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Green: 60×60(1h) (gain: 139.00) -15°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Lum: 120×60(2h) (gain: 139.00) -15°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Red: 60×60(1h) (gain: 139.00) -15°C bin 1×1
Astrodon H-alpha 5nm: 24×300(2h) (gain: 300.00) -15°C bin 1×1
Integration:
7h
Avg. Moon age:
18.98 days
Avg. Moon phase:
1.54%

RA center: 22h32m43s.29

DEC center: +40°2709.2

Pixel scale: 1.740 arcsec/pixel

Orientation: -8.028 degrees

Field radius: 1.319 degrees

More info:Open 

Resolution: 4326x3330

File size: 9.8 MB

Data source: Backyard

Description

This object is a molecular cloud located about 2000 light years away in the constellation of Lacerta. The cloud is located in a region of the sky that has a tremendous number of distant background stars, as well as several bright foreground blue and yellow stars. The red Ha emission seen throughout the image is part of Sh2-126. The emission nebula is excited by the bright star 10 Lac, which is off image to the lower left.

There are a number of things I really like about this image. The asterism of the arc of colorful stars that starts in the upper left corner is interesting. The double-curving bright molecular cloud is unique and has a 3-D look to it. The reddish emission nebula provides a nice contrast to the dense colorful starfield. Most interesting, and hardest to see, is the tiny intricate white reflection nebula in the head of the "Gecko". The star at the center of this reflection nebula is Herbig Ae/Be V375 Lacertae. Numerous Herbig--Haro objects have been identified in the same region as the reflection nebula, including HH 398, the white wisp at the above mentioned star.

One thing I learned through this object is the concept of BRCs, or Bright Rimmed Clouds. BRCs are the remnant of a molecular cloud which has been photoionized by a massive star. The bottom edge of the head of the "Gecko" has a strong Ha emission front in the shape of a "V". BRCs containing these Ha fronts have been found to be strong candidates for star formation.

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