Quote:
Originally Posted by silv
make: Eden Optics. f/5. (1m length from prime to focuser) 10mm Meade ploessl.
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I was asking because some makes of scope need a particular fitting in the focusser to allow focus to be reached.
But now you give the focal length, I suspect that you might have a tube unit designed for imaging (astrophotography). Without going into detail as to the reason, I suspect that you are not reaching focus in an eyepiece even though the focusser is wound all the way out. Is this what is happening? As Rob says, you can experiment by lifting the eyepiece higher in the fittings. With care, (and looking at the Moon is most convenient) you can lift the eyepiece completely out of the focusser and, while looking through it at the Moon's image, carefully lift it further away from the focusser while keeping it lined up on the focusser axis, and see what the observed image looks like. You can see if you get to a better focus position, then go through that to unfocussed again as you move out.
But, no worries, this is easily fixed. It needs a 2" extension tube (maybe a 35mm long one) fitted between the focusser and the eyepiece (or eyepiece plus 2" to 1.25" reducer.