HALCA

HALCA (Highly Advanced Laboratory for Communications and Astronomy), nke a makwaara maka aha ọrụ ya bụ VSOP (VLBI Space Observatory Programme), aha koodu MUSES-B (maka nke abụọ nke usoro Mu Space Engineering Spacecraft), ma ọ bụ naanị Haruka (は inac)  bụ satellite redio nke Japan nke dị mita 8 n'obosara nke e ji mee ihe maka Very Long Baseline Interferometry (VLIB). Ọ bụ nke mbụ a raara nye na mbara igwe VLBI.

 Akụkọ ihe mere eme 
E debere ya na orbit elliptical nke ukwuu na elu apogee nke 21,400 km na elu perigee nke 560 km, na oge orbital nke ihe dịka awa 6.3.   Usoro a nyere ohere iji foto nke isi mmalite redio nke eluigwe site na satellite na njikọ ya na usoro telivishọn redio nke dị n'ala, nke mere na e nwetara ma ọ dị mma (u,v) ụgbọ elu na mkpebi dị elu.

Ọ bụ ezie na e mere ya iji hụ na bands atọ: 1.6 GHz, 5.0 GHz, na 22 GHz, a chọpụtara na mmetụta nke band 22 GHz emebiwo nke ukwuu mgbe a gbasịrị ya, ma eleghị anya site na mgbagwoju anya nke ọdịdị efere na mbido, si otú a na egbochi nchọpụta na bands 1.6 GHz na 5.0 GHz.      

A malitere HALCA na Febụwarị 1997 site na Kagoshima Space Center, wee mee nchọpụta VSOP ikpeazụ ya n'ọnwa Ọktoba afọ 2003, karịa afọ 3 e buru n'amụma, tupu ọnwụ nke njikwa àgwà. A kwụsịrị ọrụ niile na Nọvemba 2005. 

A haziri ọrụ ASTRO-G (VSOP-2), na ụbọchị a tụrụ aro ya na 2012, mana a kagburu ọrụ ahụ na 2011 n'ihi ọnụ ahịa na arịwanye elu na ihe isi ike nke iru ihe mgbaru ọsọ sayensị ya. A na atụ anya na ọ ga enweta mkpebi ruo okpukpu iri karịa na okpukpu iri dị elu karịa onye bu ya ụzọ HALCA.

Nkwụsị nke ASTRO-G hapụrụ ọrụ Spektr-R nke Russia dị ka naanị ụlọ ọrụ VLBI na arụ ọrụ n'oge ahụ. Spektr-R kwụsịrị ịrụ ọrụ na 2019.

 Antenna 
E mere nnukwu antenna 8 mita ka ọ gbasaa na mbara igwe dịka nhazi a gbasaa adabaghị n'ime oghere rọket. Antenna ahụ bụ eriri ígwè nke eriri 6,000. Iji mepụta ọdịdị dị mma, a gbanwere ogologo nke eriri n'azụ antenna. Otu nchegbu  na eriri ndị ahụ nwere ike ijikọta. Ntinye nke isi ihe na egbuke egbuke malitere na Febụwarị 27, 1997.  mere ihe karịrị awa atọ n'ụbọchị mbụ ma mechaa ya na nkeji iri abụọ n'ụbọchị na esote.

 Ihe Ndị Dị Mkpa 

 Nnyocha nke hydroxyl masers na pulsars na 1.6 GHz 
 Nchọpụta nke mgbochi mgbochi maka quasar PKS1519-273 n'etiti HALCA na telivishọn redio nke ụwa
 Ihe osise nke quasars na Ụyọkọ kpakpando redio wdg site na nyocha VLBI na HALCA na netwọk redio telivishọn ụwa

 Ihe ngosi 

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