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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 wikiPageLength "4610".
- HALCA wikiPageOutDegree "17".
- HALCA wikiPageRevisionID "643452700".
- HALCA wikiPageWikiLink ASTRO-G.
- HALCA wikiPageWikiLink Apogee.
- HALCA wikiPageWikiLink Apsis.
- HALCA wikiPageWikiLink Astro-G.
- HALCA wikiPageWikiLink Category:Radio_telescopes.
- HALCA wikiPageWikiLink Category:Satellites_of_Japan.
- HALCA wikiPageWikiLink Category:Space_observatories.
- HALCA wikiPageWikiLink Category:Spacecraft_launched_in_1997.
- HALCA wikiPageWikiLink Institute_of_Space_and_Astronautical_Science.
- HALCA wikiPageWikiLink Kagoshima_Space_Center.
- HALCA wikiPageWikiLink M-V.
- HALCA wikiPageWikiLink Mu_(rocket_family).
- HALCA wikiPageWikiLink PKS1519-273.
- HALCA wikiPageWikiLink Perigee.
- HALCA wikiPageWikiLink Quasar.
- HALCA wikiPageWikiLink RadioAstron.
- HALCA wikiPageWikiLink Radio_telescope.
- HALCA wikiPageWikiLink Spektr-R.
- HALCA wikiPageWikiLink Uchinoura_Space_Center.
- HALCA wikiPageWikiLink Very-long-baseline_interferometry.
- HALCA wikiPageWikiLink Very_Long_Baseline_Interferometry.
- HALCA wikiPageWikiLinkText "HALCA".
- HALCA wikiPageWikiLinkText "Highly Advanced Laboratory for Communications and Astronomy (HALCA, or VSOP)".
- HALCA wikiPageWikiLinkText "MUSES-B".
- HALCA wikiPageWikiLinkText "MUSES-B/HALCA (Haruka)".
- HALCA wikiPageWikiLinkText "VSOP".
- HALCA wikiPageWikiLinkText "radio astronomy satellites".
- HALCA altNames "VSOP; MUSES-B".
- HALCA diameter "8".
- HALCA hasPhotoCollection HALCA.
- HALCA height "21400.0".
- HALCA height "560.0".
- HALCA launchDate "--02-12".
- HALCA launchLocation Kagoshima_Space_Center.
- HALCA launchLocation Uchinoura_Space_Center.
- HALCA launchVehicle "M-5-1".
- HALCA majorContractors "NEC Toshiba Space Systems".
- HALCA missionLength "2.10384E8".
- HALCA name "HALCA".
- HALCA nssdcId "1997".
- HALCA orbitType "Elliptical".
- HALCA organization Institute_of_Space_and_Astronautical_Science.
- HALCA period "22680.0".
- HALCA wavelength "1.6".
- HALCA website index.shtml.
- HALCA wikiPageUsesTemplate Template:For.
- HALCA wikiPageUsesTemplate Template:Infobox_space_telescope.
- HALCA wikiPageUsesTemplate Template:Japanese_space_program.
- HALCA wikiPageUsesTemplate Template:Orbital_launches_in_1997.
- HALCA wikiPageUsesTemplate Template:Reflist.
- HALCA wikiPageUsesTemplate Template:Space_observatories.
- HALCA subject Category:Radio_telescopes.
- HALCA subject Category:Satellites_of_Japan.
- HALCA subject Category:Space_observatories.
- HALCA subject Category:Spacecraft_launched_in_1997.
- HALCA hypernym Satellite.
- HALCA type ArtificialSatellite.
- HALCA type Probe.
- HALCA type Program.
- 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 sameAs Highly_Advanced_Laboratory_for_Communications_and_Astronomy.
- HALCA sameAs Muses_B.
- HALCA sameAs Highly_Advanced_Laboratory_for_Communications_and_Astronomy.
- HALCA sameAs HALCA.
- HALCA sameAs HALCA.
- 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 wasDerivedFrom HALCA?oldid=643452700.
- HALCA homepage index.shtml.
- HALCA isPrimaryTopicOf HALCA.