Pete, I had a tak 2" occular for the FS102 2.7 inch focuser. I think I got the part number from the sky90 chart. I got a camera adapter off ebay that screwed to the back of the fs60 flattener and presented a male t-thread for $2. Can't remember if the back of the fs60 is M51 or M52, I just remember it was an odd size.
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