PERFORMANCE OF THE SRAO 6-METER RADIO TELESCOPE

• DOI: 10.5303/jkas.2003.36.1.043
• Publication Date: 2010-09-09T07:50:03Z
• Authors: BON-CHUL KOO; YONG-SUN PARK; SEUNG SOO HONG; HONG-SIK YUN; SANG-GAK LEE; DO-YOUNG BYUN; JUNG-WON LEE; HAN-KyU CHOI; SANG-SUNG LEE; YOUNG-ZOO YOON; KEE-TAE KIM; HYUN WOO KANG; JUNG-EuN LEE
• Keywords: Reflector (photography); Aperture (computer memory)

We introduce and describe performance of the 6-meter telescope Seoul Radio Astronomy Observatory (SRAO). All softwares instruments except antenna structure its driving system are developed for ourselves. The SIS mixer type receiver resulted in noise temperature less than 50 K (DSB) over whole 3-mm radio window. An autocorrelation spectrometer, first Korea, provides maximum MHz band width 1024 channels. Antenna surface is measured adjusted using template method holography which a superb accuracy bet-ter 30<TEX>${\mu}m$</TEX>. Accordingly, aperture beam efficiences amount to <TEX>$70\%$</TEX> <TEX>$75\%$</TEX>, respectively, largely independent frequency 85 - 115 GHz range. It also found that pointing errors 10" both azimuth elevation gain almost constant against greater <TEX>$20^{\circ}$</TEX>, without adjusting sub-reflector position. SRAO now fully operational all these characteristics verify observations carried out with high precision fidelity.