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

Array parameters October 2016
(Sep 25 - Oct 31)

Main parameter file: laboca-2016-10.rcp

Laboca-2016-10.rcp is the final RCP file generated for the second and last cooling down cycle of LABOCA of the year. The new file has been developed with the first beam map on Mars of the period together with the last two maps been done on Mars.

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
70301 2016-09-26T01:40 Mars_70301_Laboca.rcp array_70301.pdf beams_70301.pdf
76673 2016-09-26T01:40 Mars_76673_Laboca.rcp array_76673.pdf beams_76673.pdf
78329 2016-09-26T01:40 Mars_78329_Laboca.rcp array_78329.pdf beams_78329.pdf

Notes on individual channels

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

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, 222, 228, 241, 257, 309 Bad channels, not showing any astronomical signal or very low signal levels, unconnected to groups 4, 5, or 7 above.

Channels flag file

Current file name: channel_flags-2016-10.boa,

"Not working channels list" updated 2016-11-10.


# 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, 222, 228, 241, 257, 309]