I GOT MY T-RING TODAY

stepping beyond

I'm ready after a year , to get everything put together and noticed while attaching my camera to the EFW mini 5 pos. That I'm getting a rubbing noise after putting my extension tube on the other side of the EFW, it doesn't do it if I don't screw it all the way down but, not securing it snug would make my Image Train off wouldn't it ? Help please? ASI174MM cooled - threaded male t-ring that came with the efw extension tube and t- ring to Paracorr t 2 lens assembly.

Sam@ZWO

do you mean your filter is too high?

you can add T2 spacer with your T ring

stepping beyond

It was the T2-25A that protrudes past the efw cover plate when screwed all the way in , I've got a 1mm spacer on the way . Thanks Sam for your speedy response to this dilemma . I'm a 1st efw user and unsure about the spacing , I think I'm at 54mm instead of the 55mm . I don't have a caliper to measure so I eyeball it and hoping this will make the required distance.

Support@ZWO

Add one spacer will reach the best back focus.

Don't worry, usually comma corrector have +/- 2mm range for shooting.