Array parameters June to August 2018
(Jun 16 - Aug 27)
Main parameter file: laboca-2018-07.rcp
The array parameters reported down below had been obtained from two LABOCA cooling periods done during second semester of 2018.
| |Run id |
|Start date |
|End date| |
| |2018CP2 |
|2018-06-16 |
|2018-07-12| |
| |2018CP3 |
|2018-08-03 |
|2018-08-27| |
The new RCP file and its parameters are result of combination of Uranus beam maps with only one not saturated Mars map observed on Aug 15th.Few Mars scan to use because of
its closest approach to the Earth, which the maximum of the cycle appears brightest on July 31 with an apparent diameter of 24.3", around this date, scans on Mars looks saturated
for LABOCA.
Nowadays, LABOCA possesses a total of 195 working bolometers.
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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