100-GHZ BAND TEST OBSERVATIONS OF THE KVN 21-M RADIO TELESCOPES
100-GHZ BAND TEST OBSERVATIONS OF THE KVN 21-M RADIO TELESCOPES
김기태(한국천문연구원); 변도영(한국천문연구원); 제도흥(한국천문연구원); 위석오(한국천문연구원); 배재한(한국천문연구원); 정태현(한국천문연구원); 이창훈(한국천문연구원); 한석태(한국천문연구원); 송민규(한국천문연구원); 정재훈(한국천문연구원); 정현수(한국천문연구원); 김효령(한국천문연구원); 김봉규(한국천문연구원)
44권 3호, 81~87쪽
초록
We carry out 100-GHz band test observations with the newly-constructed KVN 21-m radio telescopes in order to evaluate their performance. The three telescopes have similar performance parameters. The pointing accuracies are about 4″rms for the entire sky. The main beam sizes are about 30″(FWHMs), which is nearly the diffraction limit of the telescopes at the observing frequency (97 GHz). The measured aperture and main-beam effciencies are about 52% and 46%, respectively, for all three telescopes. The estimated moon effciency is ∼84% for the KVN Tamna telescope. The first sidelobes appear 50″(∼1.6×FWHM) from the main beam centers and the levels are on average －14 dB.
Abstract
We carry out 100-GHz band test observations with the newly-constructed KVN 21-m radio telescopes in order to evaluate their performance. The three telescopes have similar performance parameters. The pointing accuracies are about 4″rms for the entire sky. The main beam sizes are about 30″(FWHMs), which is nearly the diffraction limit of the telescopes at the observing frequency (97 GHz). The measured aperture and main-beam effciencies are about 52% and 46%, respectively, for all three telescopes. The estimated moon effciency is ∼84% for the KVN Tamna telescope. The first sidelobes appear 50″(∼1.6×FWHM) from the main beam centers and the levels are on average －14 dB.
- 발행기관:
- 한국천문학회
- 분류:
- 천문학