Russell Croman Astrophotography  



The Fox Fur Nebula

About This Photograph

This enigmatic formation of gas and dust lies in the constellation of Monoceros (the Unicorn) not far off the left arm of Orion. This is a close-up of a small section of a much larger complex, generally known as the Christmas Tree cluster. The mysterious Cone Nebula is also a part of this same cloud.

The red regions of this nebula are caused by hydrogen gas that has been stimulated to emit its own light by the copious ultraviolet radiation coming from the hot, blue stars of the cluster. The blue areas shine by a different process: they are mainly dust clouds that reflect the bluish light of the same stars.


Related Photographs

The Cone Nebula
The Cone and Fox Fur Nebula Region
The Cone and Fox Fur Nebula Region
in Hydrogen-alpha

Technical Details

Optics:20" f/8 RCOS Ritchey-Chrétien Cassegrain
Camera:SBIG STL-11000M.
Mount:Software Bisque Paramount ME
Filters:SBIG Standard RGB.
Dates/Times:7 February to 3 March 2005
Location:Dimension Point Observatory, Mayhill, New Mexico
Exposure Details:LRGB = 5:1.5:1.5:1.5 hours
Acquisition:MaxIm DL/CCD 4, TheSky6, CCDAutoPilot2.
Processing:MaxIm DL/CCD 4, Photoshop CC


Publication Data for this Photograph

Date Publication Type
2005-03-14 NASA's Astronomy Picture of the Day Web Site