IC 5146, Cocoon Nebula



Full field of view in LRGB. Hold mouse over image to view luminance only. Click here for a higher resolution image.


Crop at full resolution in RGB.
  • Exposure time: LRGB 120:60:60:60 minutes (15 minute sub-exposures for L and 10 minute sub-exposures for RGB)
  • Processing: Nebulosity 2.3 (pre-processing, stacking & DDP); Adobe Photoshop CS4 (post-processing)
  • Lens/telescope: Takahashi FSQ-106ED (4.2") quadruplet ED refractor at f/5
  • Camera: SBIG ST-8300M (T: -15 degrees Celsius) with Astronomik LRGB filters
  • Image scale: 2.10 arcseconds per pixel (F = 530 mm at 5.4 micron pixels)
  • Mount: Astro-Physics Mach1 GTO (guide rate: 1x, PEM activated)
  • Guidescope: TS OAG + SX Lodestar + PHD
  • SQM: 21.0 (start of exposure) - 21.2 (end of exposure)
  • Location: Wateren, The Netherlands
  • Date: October 9 - 10, 2010
  • Notes:
Some minor focus drift in luminance occurred due to temperature drop at the beginning of the evening.

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