chromosphere

RA: 06h 41m, Dec: +9°53′
The Cone Nebula and Christmas Tree Cluster are part of a larger star forming complex within the constellation of Monoceros. A 2.5 hour exposure in H-Alpha light taken 22nd December 2006 using an Astrodon filter shows only glowing hydrogen gas and stars - the blue reflection nebula near to the “Fox Fur” nebula (below the bright variable star S Monocerotis) often seen in photos of this region is largely invisible as most light is of the wrong wavelength and is rejected by the filter.

This entry was posted on Tuesday, March 18th, 2008 at 1:20 pm and is filed under astroimaging, astronomy, nebulae. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.