Luppino is getting up to speed on MD3. The layout indicates that there will be some tight fits where the back of the collimator meets the front of the camera. Estimates of the thermal behavior of the system are complete. The analysis takes into account internal conduction of the elements and heat transfer due to convection, radiation, and conduction. For athermalization to work properly, it may be necessary to insulate the optics barrels.
Structural analysis is in progress.
The analysis focuses on the barrel stiffnesses, induced stresses in the finger-stock and cemented optics mounts, and structural performance of the athermalizing mechanism.