Lurie-Houghton Telescope
Primary Collimation Adjuster

PHOTO: Primary Collimation Adjuster
These are the bolts used to adjust the collimation of the primary mirror. The large bolt with the washer under its head is the "puller" bolt and the other large bolt is the "pusher". This push-pull arrangement allows the adjustment to be locked and provides for a very stable, long lasting collimation. The two smaller bolts support a small "L" shaped safety bracket that would keep the primary mirror in place if the silicone attaching it to the the primary yoke should give away for any reason. This photo was taken 7 May 2000 with an Olympus D-600L digital camera.

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Updated: 19 August 2000