Atacama Pathfinder EXperiment APEX
LABOCA Calibration
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Home > Instrumentation > LABOCA > LABOCA Calibration > Array parameters

Array parameters November 2012
(24/10/2012-03/01/2013)

Main parameter file: laboca-2012-11.rcp

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
88737 2012-10-24T03:16 Uranus_88737_Laboca.rcp array_88737.pdf beams_88737.pdf
88911 2012-10-24T11:29 Venus_88911_Laboca.rcp array_88911.pdf beams_88911.pdf
89009 2012-10-24T22:53 Mars_89009_Laboca.rcp array_89009.pdf beams_89009.pdf
97097 2012-11-19T02:58 Uranus_97097_Laboca.rcp array_97097.pdf beams_97097.pdf
97099 2012-11-19T03:20 Uranus_97099_Laboca.rcp array_97099.pdf beams_97099.pdf
420 2013-01-03T02:14 Uranus_420_Laboca.rcp array_420.pdf beams_420.pdf
604 2013-01-03T07:55 Saturn_604_Laboca.rcp array_604.pdf beams_604.pdf

Notes on individual channels

Note: Channels which are terminated with a resistor are not listed in the following table anymore.

Channel #Description
101, 103, 106, 110 Strong cross-talk: 101↔106 and 103↔110. 101 and 103 may be usable for point sources only.
81, 82, 83, 84, 85, 86, 89, 90, 91, 92, 93, 94, 96, 136, 159, 160 Channels located in group 4 / cable M. These channels usually don't show any astronomical signal and are considered bad.
177, 179, 180, 182, 183, 184, 185, 191, 192, 201, 202, 203, 205, 207, 217, 218, 220 Channels located in group 7 / cable A. These channels don't show astronomical signal and are considered bad.
6, 45, 114, 133, 199, 204, 206, 208, 211, 213, 219, 228, 309 Bad channels, not showing any astronomical signal or very low signal levels, unconnected to groups 4 or 7 above.
65, 77, 246, 257, 314 These channels are variable and usually usable. Check your data.
241 No proper signal. Picks up signal from channels 248 (strong) and 296 (weak).

channel_flags-2012-11.boa:

# 25 channels not connected to any bolometer
not_connected = [ 29,  33,  35,  40,  64,  66, 124, 135, 142, 144, 146, 151,
                 158, 189, 193, 195, 200, 224, 226, 284, 295, 302, 304, 306,
                 311 ]
# 20 channels with 1MOhm resistor
resistor = [  15,  16,  87,  88,  95, 139, 143, 145, 149, 150, 157, 178,
             181, 186, 187, 188, 190, 255, 310, 317 ]
# 2 channels sealed with an absorber
blind = [ 4, 163 ]
sealed = blind
# channels showing strong cross-talk
cross = [ 101, 103, 106, 110, 241 ]
# Bad channels (no/low signal)
bad = [ 6,  45,  81,  82,  83,  84,  85,  86,  89,  90,  91,  92,  93,  94,
       96, 114, 133, 136, 159, 160, 177, 179, 180, 182, 183, 184, 185, 191,
      192, 199, 201, 202, 203, 204, 205, 206, 207, 208, 211, 213, 217, 218,
      219, 220, 228, 309 ]