Thanks Ivan
As requested, a picture of the PST modded scope. It is an 4" (102mm) f9 Jaegers lens from Surplus Shed that I had assembled about 10 years ago. The Jaegers lens had a good reputation for quality optics. ERF is an 90mm Baader ( should have got the 110mm ) in a custom cell and a machined adapter to fit the focuser drawtube.
Pretty basic but it does the job nicely and is a step up from the 40mm PST objective.
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