Thanks Alex, quite enjoying your work too. The system is an Stage 1 PST conversion which is an 102m F9 achro fitted with an 90mm Baader ERF and the humble PST shoved up the focuser drawtube. So it is really working at 85mm F 10.6, you lose a few mm off the filter when mounted in its cell.
Tried to upload a photo of the scope but the attachments not working atm for some reason.
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