2'' eyepiece adapter?

Hello I have just obtained a 31mm Nagler type 5 but sadly I'm unable to use it!

It will not reach focus in my 8'' Skywatcher Dob because you cannot put the eyepiece straight into the focusser but you must put a supplied adapter which is 65mm long in it and then you can put the eyepiece into the other end of the adapter.

Unfortunately, once I put the eyepiece in the adapter there is no longer enough intravel for the eyepiece to come into focus!

If I could get a shorter (say 45mm long) adapter it would come into focus! But I don't know who sells these things and who makes them!

I don't want to have spend $500+ for such a great piece of equipment only to find I can't use it because of this stupid little issue! Please help!

Hands on Optics used to sell a 1 inch long extention tube, I imagine they still do.

Did you try just partially engaging the eyepiece in the focuser? Not the best solution but it works.

jon

What kind of adapter is that? Is this not a 2" focuser?

Charlie

Cameron -

If I understand correctily, you don't need an extension tube, you need a shorter 2" adapter.

You should order one from Mercury Systems:

http://www.mercurysupportsystems.com/

It replaces the ring on the end of your focuser (the part with the screws that hold the 2" adapter) and basically makes the ring your 2" adapter.

-Jake