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Old 17-03-2012, 01:05 AM
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troypiggo (Troy)
Bust Duster

troypiggo is offline
 
Join Date: Nov 2008
Location: Brisbane, Australia
Posts: 4,790
Managed to sneak some test shots on Sirius in between the clouds tonight. These are stretched a lot to highlight the halos. Some pretty weird patterns in there. 5x1m subs each. Left to right is Ha, Hb, L, OIII, SII.

Anyone able to help diagnose them? I do see the Astronomics filter issue that Poita linked above at least in some of the shots. Imaging train was 10" Newt, MPCC, all Astronomics filters, and QSI583ws.

On a side note, how does the collimation and field flatness look to you? Any signs of issues there?
Attached Thumbnails
Click for full-size image (Sirius 5x1m Ha stretched.jpg)
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Click for full-size image (Sirius 5x1m Hb stretched.jpg)
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Click for full-size image (Sirius 5x1m L stretched.jpg)
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Click for full-size image (Sirius 5x1m OIII stretched.jpg)
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Click for full-size image (Sirius 5x1m SII stretched.jpg)
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