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Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

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IC 5146 (the "Cocoon" nebula) image

IC 5146 (the "Cocoon" nebula)

Contains: Deep sky object
Acquisition Details
  • Number of frames:   6
  • FPS:
  • Focal length:   1960mm
  • CMI/CMII/CMIII:
Description

The well-known Cocoon nebula, about 1000pc distant in the constellation of Cygnus. The bright portion is about 12 arc-minutes in diameter, which at that distance corresponds to a size of 15 light years. One of the wonderful things about this nebula is the surrounding swirl of dust, darkly outlining the deep redness of the nebula. In wide-field shots, this dark material extends quite a distance from the Cocoon.