Array parameters Sep 2017
(Aug 19 - Sep 17)
Main parameter file: laboca-2017-09.rcp
In total 11 beam maps were observed during the 2nd cooling down of LABOCA, but only 4 have been chosen as
the representative shape of the instrument array. The 4 chosen scans are well focused and pointing and they
were combined to generate the Master RCP of the period named laboca-2017-09.rcp. Uranus a Saturn were available
during night time along the current period and all of them were observed around at the good elevation of 50-degree,
horizontal coordinates. No critical issue related to LABOCA beam maps must report, on contrary, the behavior of
LABOCA array is stable and the number of bolometers did not change (203 working backends).
Individual scans
| 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]
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