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

Array parameters June 2011 (24/06-03/07)

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Main parameter file: laboca-2011-06.rcp

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
39339 2011-06-25T06:28 Neptune_39339_Laboca.rcp array_39339.pdf beams_39339.pdf
39340 2011-06-25T06:51 Neptune_39340_Laboca.rcp array_39340.pdf beams_39340.pdf
39351 2011-06-25T07:38 Uranus_39351_Laboca.rcp array_39351.pdf beams_39351.pdf
39352 2011-06-25T08:01 Uranus_39352_Laboca.rcp array_39352.pdf beams_39352.pdf
41347 2011-07-02T08:55 Uranus_41347_Laboca.rcp array_41347.pdf beams_41347.pdf
41563 2011-07-03T01:50 Saturn_41563_Laboca.rcp array_41563.pdf beams_41563.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. Channels 93 and 159 are variable, but (even when ok) they pick up signal from other channels and are therefore usable only for very compact sources.
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 mostly don't show astronomical signal and are considered bad.
6, 114, 133, 199, 204, 206, 208, 211, 213, 228, 309 Bad channels, not showing any astronomical signal or very low signal levels, unconnected to groups 4 or 7 above.
241 No proper signal. Picks up signal from channels 248 (strong) and 296 (weak).

channel_flags-2011-06.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,  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, 220, 228, 309 ]