Array parameters August 2011 (11/07-10/10)

LABOCA warmed up during the big snow storm at the beginning of July. When the telescope was reachable, it was cooled down again and used starting on the 11th of July. It was continuosly used until the 10th of October, when it was warmed up to nitrogen temperature in order to concentrate on heterodyne projects.

Main parameter file: laboca-2011-08.rcp

Individual scans

Scan #	Date	Parameter file	Array plot	Individual channel maps
41995	2011-07-11T08:26	Uranus_41995_Laboca.rcp	array_41995.pdf	beams_41995.pdf
41997	2011-07-11T08:58	Uranus_41997_Laboca.rcp	array_41997.pdf	beams_41997.pdf
42156	2011-07-12T00:21	Saturn_42156_Laboca.rcp	array_42156.pdf	beams_42156.pdf
44364	2011-07-19T22:53	Saturn_44364_Laboca.rcp	array_44364.pdf	beams_44364.pdf
45812	2011-07-26T05:13	Uranus_45812_Laboca.rcp	array_45812.pdf	beams_45812.pdf
49142	2011-08-05T05:41	Uranus_49142_Laboca.rcp	array_49142.pdf	beams_49142.pdf
49284	2011-08-05T11:21	Mars_49284_Laboca.rcp	array_49284.pdf	beams_49284.pdf
59795	2011-08-30T05:08	Uranus_59795_Laboca.rcp	array_59795.pdf	beams_59795.pdf
60091	2011-08-31T08:41	Uranus_60091_Laboca.rcp	array_60091.pdf	beams_60091.pdf
63401	2011-09-10T03:50	Uranus_63401_Laboca.rcp	array_63401.pdf	beams_63401.pdf
65502	2011-09-16T07:43	Uranus_65502_Laboca.rcp	array_65502.pdf	beams_65502.pdf
66345	2011-09-19T05:04	Uranus_66345_Laboca.rcp	array_66345.pdf	beams_66345.pdf
67239	2011-09-22T03:06	Uranus_67239_Laboca.rcp	array_67239.pdf	beams_67239.pdf
72163	2011-10-09T04:13	Uranus_72163_Laboca.rcp	array_72163.pdf	beams_72163.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. Channels 92 and 93 are variable, the latter may be usable.
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 mostly don't show astronomical signal and are considered bad.
6, 114, 133, 199, 204, 206, 208, 211, 213, 228, 309	Bad channels, not showing any astronomical signal or very low signal levels, unconnected to groups 4 or 7 above.
216	Variable channel (towards the end of the period). Check your data.
241	No proper signal. Picks up signal from channels 248 (strong) and 296 (weak).

channel_flags-2011-06.boa:
The channels which have to be considered bad are identical to those in period 2011-06 (but see comments on channels 92, 93, and 216 above). Thus the same macro can be used for flagging them.

# 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,  81,  82,  83,  84,  85,  86,  89,  90,  91,  92,  93,  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, 220, 228, 309 ]

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