An Optical Pointing Telescope for Radio Astronomy

Details An Optical Pointing Telescope for Radio Astronomy An Optical Pointing Telescope for Radio Astronomy

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012pasp..124..242a&link_type=abstract

Publications of the Astronomical Society of the Pacific, Volume 124, issue 913, pp.242-246

Astronomy and Astrophysics

Astronomy

Astronomical Instrumentation

Scientific paper

Design details are given for a stable optical pointing telescope for radio astronomy. The telescope is a 100 mm f/15 refractor with the objective glued to a ring of three blade flexures, an insulated and vented Invar tube mounted on flexures, and an axially symmetric camera mount. For a pair of identical telescopes, the rms differential pointing stability is 0.1" hr-1 over 2 hr, 0.05" day-1 over 3 days, 0.03" K-1, and 0.1" after a 90° change in elevation.

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