I'm using one on my TMB 80mm F/6 APO... works a treat.. Spacing is horribly critical... normally the MPCC states it requires 55 +/-2mm to achieve best results... with a refractor, I've found that 55mm gives a good result. anything else gave almost NO change...
Providing you get the spacing exact, the results are great..
I can post before and after images if required... Just let me know if you want them.. I can post a low res image with and without the reducer with 100% crops of the corners of both...
|