Nightscapes & Deep Sky Colors

Astrophotography Brian A. Morganti


Little Trifid - Little Cocoon Nebula




Sharpless 82 is a small emission nebula, surrounded by a spectral blue reflection nebula.  These two nebulas lie ahead a vast and variegated dark cloud of dust that absorbe the light from distant stars. The whole complex takes place in the small constellation of Sagitta.

Similar to the Cocoon and Trifid Nebulae, there are occluding dust filaments over the HII region, surrounding blue reflection and a larger-scale dark lane running through the region.


  • Date & Location:  August 16 & 18, 2012 - Bernville, PA

  • Weather:  Breezy, Temperature range 62F to 60F (16th) 62F to 55F (18th).

  • Sky Conditions:  16th - Below Average Transparency, 18th - Above Average Transparency

  • SQM-L: 16th = 20.22 start - 20.20 finish, 18th = 20:42 - 20:45

  • Optics:  TeleVue NP101is Refractor with 1.5x extender (810mm @ f8.1)

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

  • Mount:  AstroPhysics AP900GTO

  • Guiding:  Orion SSAG @5 seconds

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

  • Exposure:  22 x 10 minute subs @ ISO1600 - 220 minutes total exposure (3 hours 40 min)

  • Calibration Frames:  Master Dark & Bias 60F

  • Processing:  Images Plus 4.50b, PS CS6, GradientXTerminator, NIK filter tools 

  • Comments:  16th new moon but thin veil of high clouds and haze deteoriated transparency. 18th had good transparency up until midnight, later thin clouds rolled in just as I was finishing up with my exposures.  Star focusing was done with 10x Live View  and Canon EOS Utility. 


Astrophotography  -  Nightscapes & Deep Sky Colors