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Cocoon Nebula IC 5146 31 May 2021


This is my entry for May/June's competition. It is the Cocoon Nebula (aka IC 5146). I took this from my backgarden in Loughborough (East Midlands, UK) on the night of 31 May 2021. Details below with more on my blog.



  • 39× 300-s light frames (Gain 900)
  • 3 h 15 min total exposure time
  • Full use of calibration frames (darks, flats and dark flats)



  • Explore Scientific ED 102 mm Apo f/7 refractor
  • Revelation Adjustable Field Flattener
  • Sky-Watcher EQ6-R PRO SynScan GOTO equatorial mount
  • Altair Hypercam 294C PRO colour fan-cooled camera
  • Altair quad-band one-shot colour (OSC) 2″ filter
  • Pegasus FocusCube v2
  • Altair 60mm guide scope
  • Altair GPCAM2 AR0130 mono guide camera



  • SharpCap 4.0 Beta
  • PHD2
  • DeepSkyStacker
  • Photoshop
  • Topaz DeNoise AI
  • Gradient XTerminator
  • Like 3

From the category:

Backyard Astro - May & June 2021 Astronomy Image of the Month Competition

· 23 images
  • 23 images
  • 18 image comments

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