Quote:
Originally Posted by darkskybondi
Obviously I'd like to observe without my glasses, so it'd be ideal if I could focus the eyepiece to my level of shortsightedness. Will this be possible at my extreme myopia?
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With myopia you can easily observe without your specs - on a telescope winding the focusser in will compensate for myopia, moving the eyepiece closer to the mirror. For -12 that will mean moving most eyepieces a few millimetres. From personal experience your biggest problem will be taking the the specs off and losing them, then stumbling around in the dark to find them. Having them tied on with a chain around the neck is a big help.
I am quite long sighted and I have astigmatism as well, if I observe without specs I need to wind the focusser out to compensate.
With bad astigmatism, that is harder and in that case its best wearing your specs and using eyepieces specifically designed for that - in particular the Vixen LV and LVW which all have massive eye-relief (20mm or more) meaning you can wear specs to look through these eyepieces. One of the reasons I own a set.