Advice on filters please

[Specman]

Hi,

Looking for some help and advice please

Can you get a decent range of filters that will fit inside the T-adaptor (part 93635-A) for my Celestron NexStar 4SE for prime focus imaging?

It is threaded internaly throughout. Each end however is a different size. I was disappointed to find that my 1.25 filter set fits neither end!

I would like to use filters for imaging and it seems pretty daft if its not possible.

Clear skies

Mark

[Merlin66]

I think the internal threads may be only baffling to reduce reflections rather than a definative thread.

I have a couple of T thread to 38mm filter threads adaptors, which again are non-standard....

So, I think the basic answer is - no there's no standard filter thread adaptors which fit the T-threads:(

Have a look at the Baader range:

Telescope-Service: Baader Adaptors