Wide+Field+Camera+Autofocus

Under construction

The manual focus used in the Auxilliary controller is at this time being replaced with an Autofocus system. Temperature compensation will be built in. Expected to be operational Feb 2011.

This is required due to the focus changing due to temperatuire changes in the tube assembly when the observatory roof is opened.

The depth of focus is TINY and any minor chages in temperature are effecting image quality. Focus movements of <50 micons can be seen on the image plane. A few degrees makes the corrector plate shift and change focus.