Desired Performance Specifications
+/- 25 micron
length change for most of the dish
Reduce RMS
surface error from 25 micron RMS to 15 micron
RMS
Improve aperture
efficiency by a factor of 2, integration time by a factor of 4
Single Channel Prototypes & Heat Transfer Studies
Determined +/- 25
micron feasibility
Heated Standoff
interactions with Structure
3 Channel Controller & Driver Prototype
Established
system architecture, parts & material
Demonstrated
desired length change could be achieved
99 Channel Dish Surface Optimization System requested to build in January 2001