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Old 30-08-2010, 11:41 PM
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RobF (Rob)
Mostly harmless...

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Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,735
Helix in HaLRGB (8" Newt and QHY9) (NOW WITH ADDED SIDONIO'S....)

The helix was the last object I chased on the first night of the South Pacific Star Party back in May. The LRGB data here was collected between 3:30am and start of twilight (just after 5am). I didn't want to stay up that late to collect Ha data back in Bris, so I've only recently bagged that to allow me to put it all together. It was particularly pleasing on the 2nd night of Ha collection to get decent 20min Ha subs - the first time I've managed to push my gear that far without losing data.

Didn't really get a lot of RGB at Wiruna (only 10mins of green and blue), but perhaps the clear dark skies have helped me get away with that a little to end up with this HaLRGB conglomeration. Probably more technically correct to say its HaRRGB, with a bit of L luminosity mixed in along the way.

Nice to have started to get some of the outlying nebulosity and some of the inner structure even though my rig doesn't really have the resolution and sharpness to do it justice. Cropped in to about 40% of actual field to highlight object (and hide poor flat correction at edges of field )

Thanks for looking

Data: HaLRGB 170:55:15:10:10
(LRGB data 5mins unbinned, Ha data 10 & 5mins unbinned)
FOV & FL: Approx 25 x 20 arcsecs at 1m
Camera: QHY9 + QHY Filterwheel
OTA: Skywatcher SW600 8inch F5 Newtonian on Heq5
Guiding: 9x50 SW Finderscope + Orion SSAG
Processing: PixInsight, PS
Sky Conditions: Excellent (Wiruna skies at least....)
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Last edited by RobF; 02-09-2010 at 04:21 PM.
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