Moving M2 mirror without pointing offset.

Details Moving M2 mirror without pointing offset. Moving M2 mirror without pointing offset.

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991tngtr...8.....r&link_type=abstract

Telesc. Naz. Galileo, Tech. Rep., No. 8,

Physics

Optics

Scientific paper

Moving the secondary mirror M2 to introduce an amount of decentering coma is one of the tasks of active optics. The authors show that this target is accomplished with high accuracy rotating the mirror around a point located near, but not exactly at the center of curvature of M2. Ray tracing results are compared to analytical ones in the case of the Italian Galileo telescope, that will be equipped with an high precision M2 driving device; the close matching with the analytical calculations is demonstrated.

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