Quote:
Originally Posted by Robh
Hi Carlton,
You are correct about shortening the light path to the EP.
The refractor may be designed to focus EPs without a diagonal. That's why you might have less in-travel with the diagonal attached. The 30mm probably comes to focus because it is 2" and goes further inside the drawtube.
If your 1.25 inch adapter has a 1cm flange find one with a narrow flange (2mm) for the 20mm EP if it nearly focuses. Or you could use it without the diagonal. Not as comfortable though.
If your other EPs work fine there is certainly nothing wrong with the scope.
Regards, Rob
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Thanks for the confirmation Rob,
Tossing up whether to buy a low/negative profile adapter or simply look for a 17 or 18mm EP & see if that works.
Quote:
Originally Posted by Pinwheel
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No, I don't believe so. 2" diagonal straight into a 2" focuser. 2" EP holder is fixed to the top of the diagonal, 1.25" adapter straight into that.
Quote:
Originally Posted by Varangian
If you're set on using the 20mm eyepiece buy 1.25 inch (I.m assuming the 20mm is 1.25 inch?) extension tube ($20) and insert this into your focuser and then insert the 20mm into that. This will set the eyepiece back so to speak and give you focus without having to rack the focuser all the way in.
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Thanks but, not really the convenience I was looking for