Spacing....

[Earl]

AH HA !!! yes I love spacing, and id like to chew the cud so to speak and get some furter input.

The setup im dabbling with.

314L > SX filterwheel > OAG > M48 to T step down adapter WO redcuer for ZS71

numbers :

13.5mm > (1.5mm between surfaces aprox) 29mm > 18 total backfocus of this chain is 62mm

The reducer without the supplied spacer for the scope needs 68.32. (NOTE: the reducer is supplied with an adapter to pad out the reducer so as to need the 55-57 DSLR spacing.)

I just need 5mm to get it with in the 2mm zone?

EDIT: Baader filters add 1mm but im ignoring this due to the 2mm zone and the small chip.

[Merlin66]

If your numbers are correct, then yes, I'd say a 5mm spacer would get you close enough.