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- HALCA abstract "HALCA (Highly Advanced Laboratory for Communications and Astronomy), also known for its project name VSOP (VLBI Space Observatory Programme), or the code name MUSES-B (for the second of the Mu Space Engineering Spacecraft series), is a Japanese 8 meter diameter radio telescope satellite which was used for Very Long Baseline Interferometry (VLBI). It was the first such space-borne dedicated VLBI mission.It was placed in a highly elliptical orbit with an apogee altitude of 21,400 km and a perigee altitude of 560 km, with an orbital period of approximately 6.3 hours. This orbit allowed imaging of celestial radio sources by the satellite in conjunction with an array of ground-based radio telescopes, such that both good (u,v) plane coverage and very high resolution were obtained.Although designed to observe in three frequency bands: 1.6 GHz, 5.0 GHz, and 22 GHz, it was found that the sensitivity of the 22 GHz band had severely degraded after orbital deployment, probably caused by vibrational deformation of the dish shape at launch, thus limiting observations to the 1.6 GHz and 5.0 GHz bands.HALCA was launched in February 1997 from Kagoshima Space Center, and made its final VSOP observations in October 2003, far exceeding its 3 year predicted lifespan, before the loss of attitude control. All operations were officially ended in November 2005.A follow-up mission ASTRO-G (VSOP-2) was planned, with a proposed launch date of 2012, but the project was eventually cancelled in 2011 due to increasing costs and the difficulties of achieving its science goals. It was expected to achieve resolutions up to ten times higher and up to ten times greater sensitivity than its predecessor HALCA.The cancellation of ASTRO-G leaves the Russian Spektr-R mission as the only currently operational space VLBI facility.".
- HALCA wikiPageExternalLink index.shtml.
- HALCA wikiPageExternalLink www.vsop.isas.ac.jp.
- HALCA wikiPageID "1522020".
- HALCA wikiPageRevisionID "586337298".
- HALCA altNames "VSOP; MUSES-B".
- HALCA diameter "8".
- HALCA hasPhotoCollection HALCA.
- HALCA height "21400".
- HALCA launchDate "February 1997".
- HALCA launchLocation Uchinoura_Space_Center.
- HALCA missionLength "2.10384E8".
- HALCA name "HALCA".
- HALCA orbitType "Elliptical".
- HALCA period "22680.0".
- HALCA wavelength "1.6".
- HALCA website index.shtml.
- HALCA subject Category:Japanese_satellites_and_space_probes.
- HALCA subject Category:Radio_telescopes.
- HALCA subject Category:Space_observatories.
- HALCA subject Category:Spacecraft_launched_in_1997.
- HALCA type Artifact100021939.
- HALCA type AstronomicalTelescope102751295.
- HALCA type Device103183080.
- HALCA type Equipment103294048.
- HALCA type Instrument103574816.
- HALCA type Instrumentality103575240.
- HALCA type JapaneseSatellitesAndSpaceProbes.
- HALCA type Magnifier103709206.
- HALCA type Object100002684.
- HALCA type PhysicalEntity100001930.
- HALCA type RadioTelescope104044716.
- HALCA type RadioTelescopes.
- HALCA type Satellite104137444.
- HALCA type ScientificInstrument104147495.
- HALCA type SpaceTelescopes.
- HALCA type Telescope104403638.
- HALCA type Whole100003553.
- HALCA comment "HALCA (Highly Advanced Laboratory for Communications and Astronomy), also known for its project name VSOP (VLBI Space Observatory Programme), or the code name MUSES-B (for the second of the Mu Space Engineering Spacecraft series), is a Japanese 8 meter diameter radio telescope satellite which was used for Very Long Baseline Interferometry (VLBI).".
- HALCA label "HALCA".
- HALCA label "HALCA".
- HALCA label "HALCA".
- HALCA label "Highly Advanced Laboratory for Communications and Astronomy".
- HALCA label "Highly Advanced Laboratory for Communications and Astronomy".
- HALCA label "Highly Advanced Laboratory for Communications and Astronomy".
- HALCA label "Muses B".
- HALCA label "はるか (人工衛星)".
- HALCA sameAs Highly_Advanced_Laboratory_for_Communications_and_Astronomy.
- HALCA sameAs Muses_B.
- HALCA sameAs Highly_Advanced_Laboratory_for_Communications_and_Astronomy.
- HALCA sameAs はるか_(人工衛星).
- HALCA sameAs HALCA.
- HALCA sameAs Highly_Advanced_Laboratory_for_Communications_and_Astronomy.
- HALCA sameAs HALCA.
- HALCA sameAs m.057rc6.
- HALCA sameAs Q1617995.
- HALCA sameAs Q1617995.
- HALCA sameAs HALCA.
- HALCA wasDerivedFrom HALCA?oldid=586337298.
- HALCA homepage index.shtml.
- HALCA isPrimaryTopicOf HALCA.