The HALCA (Highly Advanced Laboratory for Communications and Astronomy), also known as MUSES-B before launch and Haruka after launch, is an 8 meter diameter radio telescope satellite which was used for Very Long Baseline Interferometry. A radio telescope is a form of directional Radio antenna used in Radio astronomy and in tracking and collecting data from Satellites Very Long Baseline Interferometry (VLBI is a type of astronomical interferometry used in Radio astronomy. It is in an orbit with an apogee altitude of 21,400 km and a perigee altitude of 560 km. In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from The elliptical orbit allowed imaging of celestial radio sources by the satellite and ground based telescopes, with good (u,v) plane coverage and high resolution. The orbit has an inclination of 31 degrees, and a period of about 6. 3 hours. It was launched in February 1997. Year 1997 ( MCMXCVII) was a Common year starting on Wednesday (link will display full 1997 Gregorian calendar After three years of designed life, attitude control failed in 2003, and the operation officially ended in November 2005. Year 2003 ( MMIII) was a Common year starting on Wednesday of the Gregorian calendar. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar.
HALCA will be followed by ASTRO-G (VSOP-2) in 2011. ASTRO-G (also known as VSOP-2) is a planned Radio telescope Satellite under development by JAXA.
Highlights
- Observations of hydroxyl masers and pulsars at 1. 6 GHz
- Detection of interference fringes for quasar PKS1519-273 between HALCA and terrestrial radio telescopes
- Routines imaging of quasars and radio galaxies etc. A quasar (contraction of QUASi-stellAR radio source) is an extremely powerful and distant Active galactic nucleus. by means of experimental VLBI observations with HALCA and terrestrial radio telescope networks
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