Quote:
Originally Posted by skogpingvin
Hi experts
The t-mount has no spare length in the train due to insufficient back-focus from the flattener, so I can't put a filter there. Is there anything I can do? Anywhere else I can put a Ha filter?
Many thanks
Bill
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Hi Bill,
I'm no expert, but my 1st thought on this is: when you say insufficient back focus, Im just wondering how much is insufficient you mention, because a filter, I'm thinking a filter 'some screw in types is/can be only a few mm thick ?
So - I assume your focus train is fully & totally extended with absolutely no more room to extend, not even a few mm ?
Just for any other 'onlookers' Can you post a 'close-up' pic of your Focus train, maybe a hack with the actual focuser that may give a few more mm ?
But as said, Im no expert, and also not sure of the size shape of the filter needed, but there should be a thin screw in version, ?
Just added my Bobs worth
