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

Array parameters October 2014
(16/09-21/10)

Main parameter file: laboca-2014-10.rcp

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
64132 2014-09-16T18:04 Mars_64132_Laboca.rcp array_64132.pdf beams_64132.pdf
66295 2014-09-23T06:00 Uranus_66295_Laboca.rcp array_66295.pdf beams_66295.pdf
70469 2014-10-05T02:48 Uranus_70469_Laboca.rcp array_70469.pdf beams_70469.pdf
70762 2014-10-05T21:29 Mars_70762_Laboca.rcp array_70762.pdf beams_70762.pdf

Notes on individual channels

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

Bad channels are identical to those from the March/April 2014 period.

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.
114, 116, 117, 118, 119, 120, 126, 128, 129, 130, 131, 132, 133, 134, 141, 147, 148, 152, 153, 154, 155, 156 Channels located in group 5 / cable L. These channels don't show astronomical signal (factor 20 below normal) 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/or cross-talk and are considered bad.
6, 45, 170, 199, 204, 206, 208, 211, 213, 219, 228, 241, 309 Bad channels, not showing any astronomical signal or very low signal levels, unconnected to groups 4, 5, or 7 above.

channel_flags-2014-03.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 ]
# Bad channels (no/low signal or very high noise)
bad = [ 6,  45,  81,  82,  83,  84,  85,  86,  89,  90,  91,  92,  93,  94,
       96, 114, 116, 117, 118, 119, 120, 126, 128, 129, 130, 131, 132, 133,
      134, 136, 141, 147, 148, 152, 153, 154, 155, 156, 159, 160, 170, 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, 241, 309 ]