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Lens in focuser
Greetings all,
Just a small question from me. I have a saxon refractor, that is claimed to have a focal length of 1400mm, with a physical tube length of only 550mm. There is however, a small lens screwed into the bottom of the focuser, which from what I can tell, acts as a barlow lens. Yet from my understanding, this wont give an evictive 2x focal length, but will rather just double the magnification of the eye pieces, and also cut light coming in.
I am wondering whether I would be better taking out this lens, and just having a clear focus tube or not. And also, would it be possible that this lens is ruining any sharp focus, which thus far has eluded me?
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