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Upper Cage
This is the upper cage that positions the secondary mirror, focuser and any finderscopes. The main idea is to make this piece as light as possible, since every pound up here requires many pounds of offsetting weight below the balance point for proper weight distribution. We make sure that your telescope will balance preceisely without the need for any counterbalancing measures.
 Here is the 1/2" connecting ring which joins the trusses so we can load the cage with both feet on the ground. |
 Tom installing the upper cage onto the 1/4"-20 bolts protruding from the truss mounts. |
 I think we'll need a ladder most of the time since this is about 30 degrees in altitude. |
 The secondary cage loaded with two telrads and a 9 x 60 optical finder, not your typical arrangement. The lower telrad is for ground work and the upper one is for ladder use. |
 Close up of the cage to ring attachment. Four simple knobs secure the two. |