That's interesting, just to clarify you originally you had
Adapter: 12.5mm +
Filter wheel: 20mm +
ASI6200: 12.5mm +
= 45mm - 1.00mm filter = 44mm
and that didn't work, but
Adapter: 10.5mm +
Filter wheel: 20mm +
ASI6200: 12.5mm +
= 43mm - 1.00mm filter = 42mm
did work? I'm a bit confused
