Design of the Apache Point Observatory 3.5 telescope. I - Thermal control of the telescope enclosure

Details Design of the Apache Point Observatory 3.5 telescope. I - Thermal control of the telescope enclosure Design of the Apache Point Observatory 3.5 telescope. I - Thermal control of the telescope enclosure

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..628..369s&link_type=abstract

IN: Advanced technology optical telescopes III; Proceedings of the Meeting, Tucson, AZ, Mar. 3-6, 1986 (A87-35201 15-89). Bellin

Astronomy and Astrophysics

Astronomy

4

Astronomical Observatories, Enclosure, Reflecting Telescopes, Temperature Control, Ventilation, Azimuth, Cooling, Instruments, Mirrors

Scientific paper

Five universities are constructing a 3.5 m telescope facility on Apache Point (2800 m above sea level) in southern New Mexico. The telescope enclosure design, in addition to providing protection for the telescope includes thermal control features intended to minimize local seeing effects. The components of the thermal design of the telescope enclosure include minimization of heat and cold production, removal of observer support functions to a detached operations building, control of air flow through the telescope chamber, minimization of thermal mass which is thermally coupled to exposed surfaces, forced ventilation of instruments, telescope and enclosure base, emissivity control of surfaces coupled to the sky, and use of resistive heaters for condensation control in the telescope chamber.

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