Development of the First Automated Small Telescope for the Site Testing of Dome A

Details Development of the First Automated Small Telescope for the Site Testing of Dome A Development of the First Automated Small Telescope for the Site Testing of Dome A

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011acasn..52..401p&link_type=abstract

Acta Astronomica Sinica, vol. 52, no. 5, p. 401-412

Astronomy and Astrophysics

Astronomy

Site Testing, Turbulence

Scientific paper

Antarctic site testing works have shown that Dome C is an extremely good astronomical site on the earth. Dome C is better than any other mid-latitude sites because of the following advantages: extremely dry, cold, low radiation of infrared background, clear air, low wind speed, the absence of aerosols and light pollution, as well as continuous observations lasting for three to four months. International astronomical communities widely predict that Dome A with a higher altitude may be better than Dome C as an astronomical site. In the last three years, although site testing works at Dome A led by Center for Antarctic Astronomy of Chinese Academy of Sciences, have initially confirmed the great advantages of Dome A as an astronomical site, the seeing data, which is the primary parameter directly used to compare astronomical sites in optical observations, has not been obtained until now. We have modified the commercial telescope with a diameter of 35 cm and developed software to function as a DIMM (Differential Image Motion Monitor) which could simultaneously monitor both seeing and isoplanatic angle at Dome A automatically. At present, the instrument has been shipped by "Xuelong" exploration ship, then was installed in early 2011 at Dome A and began to work. Before shipment, software, hardware and alignment methods have been tested through comparative testing of our DIMM together with another DIMM from Xinglong Observing Station of National Astronomical Observatories.

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