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Old 16-02-2010, 07:42 PM
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Geoff45 (Geoff)
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Join Date: Jul 2006
Location: Sydney
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M46 and NGC 2438

Nice star cluster (M46) with a planetary (NGC2438) in the same line of sight. It is unclear whether or not the planetary is physically associated with the cluster.

I took this one about a month ago, but I had labled the red frames as luminance and the L as red. Couldn't work out why I couldn't get the colour right, nor why I had taken so many reds. Fortunately Maxim keeps track of the filter used via the FITS header( but takes no responsibility for the idiot setting up the file names).

Scope: WO ZS110
Camera: QSI 540wsg
Exposure:5 x 5 min RGB, 8 x 5min L
Mount: GM8

Cropped to 40' x 40' from 60' x 60'

Image capture in MaximDL, Stacking and digital development in CCDStack, finished in Photoshop.
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