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The problem with orthos is the difficulty of tracking at high powers with a dob, due to the smaller FOV.
A nice big FOV makes tracking much easier, but as we have said many times, quality wide field views come at a price !
P.S. take your time in deciding if you want the Ultima. There are many reviews of this eyepiece online if you want to read about it.
Last edited by Starkler; 10-01-2005 at 09:28 AM.
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