Hello,

A nice clear evening last night. There were no cataclysmics to
monitor, so it was pretty-picture-taking-time ;-)

Here is one of the Cocoon Nebula. It was taken through a Takahashi
CN-212 in Newtonian mode with an ST-7MXE NABG (I LOVE that 89%
efficiency!) and CFW-8 filters. Times were shorter than I would
like, but the image is better than my previous attempts at this
object. LRGB: 30:10:10:16 minutes. An RGB and a luminance image were
made in MaxImDL using flats, darks and bias frames. The RGB and
luminance were then imported into Adobe Photoshop to perform a
luminance layer combine.

http://www.regulusastro.com/regulus/photos/text/ic5146_lrgb.html

~johnb