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Old 07-04-2011, 10:53 PM
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RobF (Rob)
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Join Date: Jul 2008
Location: Brisbane, Australia
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Extreme imaging - M101 - 7 degrees above horizon

On Sat/Sun night at Leyburn I was able to catch some images of the remaining 4 Messier objects that just creep above our horizon here at 27.5 degrees South latitude that I haven't imaged to date. I've been particularly keen to have a go at the magnificent M101 galaxy, and was fortunate to get some LRGB data while it sat at about 7 degrees for 30mins. I binned on the first night as the scope laboured through a gusty breeze, but Sun night was calm allowing a few longer Lum subs.

The master stacked image was of course heavily skewed to reds (like a sunset) but a little colour has come through in the end. Yay....
I think I'm allowed a bit of leeway for the Lum and chrominance noise coming through in the background all things considered.

LRGB 24:12:15:12 (mostly 3min subs binned x2 LRGB with 3 additional 5min unbinned lum frames) through the 8" Newt/MPCC/QHY9 etc
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Last edited by RobF; 08-04-2011 at 07:00 PM.
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