Image of the day

Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

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Horsehead Nebula image

Horsehead Nebula


Acquisition Details
  • Number of frames:
  • FPS:
  • Focal length:
  • CMI/CMII/CMIII:
Description

3.6 hours total exposure through RGB filters during very poor conditions (high clouds, poor seeing). Equipment includes 12" LX200R on Paramount ME, STL-11000M and AO-L, Optec TCF-S and Pyxis, and Sirius 2.3m dome. The horse is facing into strong rays from the star Alnitak.