StormEffects

Nightscapes & Deep Sky Colors

Astrophotography Brian A. Morganti


LDN 1622 Dark Nebula

vdB 62 & vdB 63 Reflection Nebula

Orion

 

Mouse over the above image to see the designations of the various objects

 

 

Lynds' Dark Nebula 1622 lies just outside and east of Barnard's Loop in the constellation Orion.  LDN 1622 is thought to be much closer than Orion's more famous nebulae of the Orion Molecular Cloud Complex, perhaps only 500 light-years away.  Lynds' Dark Nebula (LDN) 1622 appears against a faint background of glowing hydrogen gas only easily seen in long telescopic exposures of the region. LDN 1622 lies near the plane of our Milky Way Galaxy, close in the sky to Barnard's Loop.  Two van den Bergh objects are also visible in this image.  These are small reflection nebulae and can be identified by dragging your mouse over the image. 

IMAGE DETAILS:

  • Date & Location:  February 20, 2012 - Bernville, PA

  • Weather:  Light winds, Temperature range 35F to 25F.

  • Sky Conditions:  Mostly clear with average transparency. 

  • SQM-L: Average 20.15 start - 20.42 finish

  • Optics:  TeleVue NP101is Refractor with focal reducer (432mm f4.3)

  • Filter:  Hutech IDAS-LPS (Light Pollution Suppression)

  • Mount:  AstroPhysics AP900GTO

  • Guiding:  Orion SSAG

  • Camera:  Canon T1i (500d) Hap Griffin modified - Baader UV/IR

  • Exposure:  21 - 7 minute subs @ ISO800 -  total 147 minutes

  • Calibration Frames:  Master Dark & Bias 35F

  • Processing:  Images Plus 3.82, PS CS4, Noise Ninja, GradientXTerminator, NIK 

  • Comments:  Dark nebula such as these are rather difficult to process since they are much darker than the background sky.  Thus, in order to bring out the faint details of the surrounding emission and reflection nebulae the resultant image will have somewhat of a brightened background sky.  As always, a darker sky with additional exposure time would reveal more subtle details. 

 

 

Astrophotography  -  Nightscapes & Deep Sky Colors

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