Array parameters April 2019
(Apr 06 - Apr 20)
Main parameter file: laboca-2019-04.rcp
Laboca was cooled down for antenna commissioning on April 06 and was cold until April 20.
During the cool down period, the instrument was used two days for antenna commissioning.
As there was still Helium available at the start of science time it was also used during the MPI time for science observations.
There were two cold cycles for telescope commissioning and another four for science observations.
We observe a total of 8 beam maps on different sources and some of them are usually less likely chosen for long map
(Mars, J0522, Carina, B13134, G5.89, G34.3, IRAS1629, Jupiter ), after revision only 5 were keep to create a new RCP
file, most of them observed during April 15th under an average water vapor of 0.74 mm.
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, 212, 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
Channels list updated on 2018-08-18.
Current file name: channel_flags-2018-08.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 ]
# 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, 212, 213, 217, 218, 219, 220, 222, 228, 241, 257,
309]
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