Temperature control of large honeycomb mirrors

Details Temperature control of large honeycomb mirrors Temperature control of large honeycomb mirrors

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..834s&link_type=abstract

IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 2 (A91-23201 08-89

Astronomy and Astrophysics

Astronomy

1

Astronomical Observatories, Honeycomb Structures, Mirrors, Temperature Control, Calibrating, Temperature Measuring Instruments

Scientific paper

The Astrophysical Research Consortium, the Magellan Project, and the National Optical Astronomy Observatories are collaborating in an experiment to study temperature control of a honeycomb mirror in an observatory environment. A full-scale mockup of a 60-deg sector of a 3.5-m borosilicate honeycomb mirror was constructed of glass and installed in the Apache Point Observatory (APO) 3.5-m telescope mount. The response of this mockup (the wedge) to diurnal temperature variations was monitored by measuring the glass temperature at about 300 locations distributed throughout its volume. The temperature of the wedge can be controlled via air circulated through its interior.

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