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Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on June 17, 2003 18:26:40 UTC |
The proper place to be doing that inspection is at the focal plane. This can be found easily by pointing the scope at something bright and using a ground glass screen or a piece of oiled paper (a little oil on a piece of thin paper will make it a lot more transparent - water tends to make the paper fall apart easily). Do this on the moon rather than on the sun as the paper may ignite from the sun's rays if you don't reduce the light by a lot.
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