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LABOCA Calibration
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Home > Instrumentation > LABOCA > LABOCA Calibration > Array parameters

Array parameters August 2012 (20/07-14/10)

LABOCA was cooled down mid-July to be ready for the Chilean, ESO, and Swedish time blocks starting shortly thereafter. It was used until being warmed up in mid-October.

Main parameter file: laboca-2012-08.rcp

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
58262 2012-08-01T06:43 Uranus_58262_Laboca.rcp array_58262.pdf beams_58262.pdf
60802 2012-08-08T19:31 Mars_60802_Laboca.rcp array_60802.pdf beams_60802.pdf
60859 2012-08-09T00:16 Mars_60859_Laboca.rcp array_60859.pdf beams_60859.pdf
62725 2012-08-13T17:58 Mars_62725_Laboca.rcp array_62725.pdf beams_62725.pdf
62727 2012-08-13T18:21 Mars_62727_Laboca.rcp array_62727.pdf beams_62727.pdf
73567 2012-09-10T08:49 Uranus_73567_Laboca.rcp array_73567.pdf beams_73567.pdf
76219 2012-09-17T23:26 Mars_76219_Laboca.rcp array_76219.pdf beams_76219.pdf
76221 2012-09-17T23:47 Mars_76221_Laboca.rcp array_76221.pdf beams_76221.pdf
77563 2012-09-21T03:43 Uranus_77563_Laboca.rcp array_77563.pdf beams_77563.pdf
77571 2012-09-21T04:10 Uranus_77571_Laboca.rcp array_77571.pdf beams_77571.pdf
77876 2012-09-21T23:00 Mars_77876_Laboca.rcp array_77876.pdf beams_77876.pdf
81965 2012-10-03T22:43 Mars_81965_Laboca.rcp array_81965.pdf beams_81965.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. Channel 93 is variable and can usually be used.
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.
18, 65, 77, 257 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-2012-08.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,  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 ]