The observatory at McLean High School


The business end of the 13 inch Newtonian. The Meade 32mm (2 inch  barrel) eyepiece has also been exposed to the elements, but there is a loose fitting cover inside the tube itself. Barely visible are rings for a finder scope (50mm?), and the two holes below the focuser may be for a Telrad.


The mirror cell. There are three adjustment screws with locking bolts. The mirror sits in a cradle consisting of a metal plate and a flange. This may be a 9-point floation cell, but there is something obviously wrong with it, since one of the triangles has slipped (not visible). The mirror needs to be cleaned, at a minimum.


A view of the clock drive mechanism, with the cover removed. The eight bolts and springs around the axle push on the black pressure plate as part of the clutch mechanism. This appears to be in good condition.

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