MMT 336
Adaptive Deformable Secondary Mirror
2002
Project specifications
Main Scope
Adaptive Deformable Secondary Mirror
Developed by
Microgate, ADS International, MediaLario, INAF, Aerospace Engineering
First light
2002
Primary Mirror diameter
6,5 m
Secondary Mirror diameter
0,64 m
Number of actuators
336
Structure size
Mount Hopkins, Arizona, USA
University of Arizona – Steward Observatory. Prime contractor: MediaLario Srl
MMT 336
Adaptive Deformable Secondary Mirror
Status:
Operational until 2017
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Description
The Multiple Mirror Telescope adaptive secondary is the first operative adaptive secondary ever built, providing for the first time the adaptive optics correction on a main component – the secondary mirror – of the telescope optical train. The 6.5m telescope is located on the summit of Mt. Hopkins, in southern Arizona, and is managed by the University of Arizona.The adaptive secondary replaces the f/15 secondary mirror and has a diameter of 0.64 m, controlled by 336 contactless actuators.
microgate responsibilities
Microgate designed the control system and, more specifically the dedicated electronics, based on a cluster of 168 fixed-point DSPs. The integration of the system and the electromechanical tests were performed at Microgate in 2000, validating the system dynamic and static performances. We also contributed to the first commissioning at Steward Observatory (University of Arizona), where the system was optically calibrated to be finally installed at the telescope in 2002.
