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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?
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