Atacama Pathfinder EXperiment APEX
Instrumentation
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APEX instrumentation

Facility instruments

Instrument Type Mode Frequency [GHz] HPBW [arcsec] IF range [GHz] # of beams Location Status Comment
APEX-1 (SHeFI) Heterodyne SIS SSB 214 - 275 30 - 25 4 - 8 1 Nasmyth-A ok
APEX-2 (SHeFI) Heterodyne SIS SSB 267 - 378 23 - 17 4 - 8 1 Nasmyth-A ok
APEX-3 (SHeFI) Heterodyne SIS DSB 385 - 500 17 - 13 4 - 8 1 Nasmyth-A not ok
APEX-T2 (SHeFI) Heterodyne HEB DSB 1250 - 1390 5 2 - 4 1 Nasmyth-A not ok Science Verification pending
LABOCA Bolometer array   345 19   295 Cassegrain ok  
SABOCA Bolometer array   850 8   39 Cassegrain not ok warmed up
 
APEX-2A Heterodyne SIS DSB 279 - 381 18 4 - 8 1 Nasmyth-A not ok Decommissioned in Feb 2008 and replaced by APEX-2

PI instruments

Apart from the facility receivers, PI instruments will be installed at APEX during longer or shorter time periods. Some of them can be used by the community in collaboration with people from the corresponding PI group. In case of the MPIfR instruments, contact Rolf Güsten (rguesten(at)mpifr-bonn.mpg.de) before submitting any proposals.

Instrument Type Usage Frequency [GHz] HPBW [arcsec] # of beams Location Status Comment
FLASH+ Heterodyne SIS PI (MPIfR) 262-374 17-22 1 Nasmyth-A ok  
374-516 12-14 1 ok  
CHAMP+ Heterodyne SIS PI (MPIfR) 620-720 9-7 7 Nasmyth-B ok  
780-950 7-6 7 ok  
ASZCA Bolometer array PI (MPIfR) 150 42 330 Cassegrain n/a Decommissioned in December 2010
ARTEMIS+ Bolometer array PI (ESO) 1499 (200 μm) 4 288 * 8 Cassegrain n/a not available yet
856 (350 μm) 7 n/a Commissioning June 2013
666 (450 μm ) 9 n/a not available yet
PolKa Polarimeter PI (MPIfR) 345 19 295 Cassegrain ok Commissioning pending

Facility backends

Calibration plan