Quote:
Originally Posted by Outcast
Maybe there is a better way to explain this & better questions to ask:
My problem is not having enough inwards travel on my draw tube for one eyepiece in particular, the 20mm Superview. It's almost in focus but, not quite & the draw tube won't go in any further.
Am I right in thinking that I need to somehow shorten the light path for this EP to come to focus?
Would a change to a 1.25" diagonal achieve this?
Would a recessed 1.25" adapter achieve the same thing?
Is my scope just not good with a 20mm 1.25" EP?
Why does my scope have 120mm of focusser tube travel if, when using EPs it only uses the first 20 - 30mm?
Is there potentially something wrong with the scope??
Are my eyes that screwed up??
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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.