Array parameters December 2008 (17/11-31/12)

LABOCA was warm between the 2nd and 17th of November. Then it was cooled down in order to be available as back-up instrument for weather which is insufficient for SABOCA. (We performed commissioning and science verification observations with SABOCA at that time.)
After the science observing period ended and the Bolivian Winter arrived. we warmed up LABOCA on 31st of December 2008.

Only two beam maps were observed during this period, and we noted a siginificant change in the numbers of bad channels. Thus we advice you to verify the channel response (and the channels to be flagged during data reduction) on your target data or maps of strong calibrators observed during your project. In addition, a consistent change in Elevation offsets has been noted compared to the October maps, maybe because of a mechanical movement of LABOCA during the SABOCA dismount and reinstallation in November.

Main parameter file: laboca-2008-12.rcp

Individual scans

Notes on individual channels

# 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 = [ 103, 110, 241 ]
# Bad channels (no signal or noisy)
bad = [  6,  82,  83,  85,  86,  98, 101, 106, 159, 160, 179, 184, 191,
       201, 204, 205, 207, 218, 220, 228, 257, 309 ]
# Suspicious channels (sometimes noisy, sometimes not)
bad_maybe_nov = [ 92, 183, 202, 294 ]
bad_maybe_dec = [ 18,  49,  84,  90,  94,  96,  97,  99, 102, 105, 107, 108,
                 123, 125, 236, 265 ]