The status of the 1.26m infrared telescope and its photometer system - Progress and problems

Details The status of the 1.26m infrared telescope and its photometer system - Progress and problems The status of the 1.26m infrared telescope and its photometer system - Progress and problems

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pbeio..11...33q&link_type=abstract

Beijing Astronomical Observatory, Publications, Sept. 1988, p. 33-40.

Astronomy and Astrophysics

Astronomy

1

Astronomical Photometry, Infrared Telescopes, Data Acquisition, Error Analysis, Research And Development

Scientific paper

The preparatory work undertaken on the 1.26-m IR telescope at the Xinglong station of Beijing Astronomical Observatory since its installation in winter 1985 is reviewed. The instrument has a primary mirror of average thickness 80 mm and aperture-thickness ratio about 16; its total weight is 7 tons, and it employs a direct-drive worm-gear system. Particular attention is given to the tracking and position encoding systems, the pointing accuracy, the chopping secondary and 45-deg rotatable mirror, the InSb photometer, the low-resolution circular-variable-filter spectrometer, and the data-acquisition system. Diagrams and graphs are provided.

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