Array parameters April 2011 (22/02-27/05)

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Main parameter file: laboca-2011-04.rcp

Individual scans

Scan #	Date	Parameter file	Array plot	Individual channel maps
10157	2011-03-23T01:38	Saturn_10157_Laboca.rcp	array_10157.pdf	beams_10157.pdf
10392	2011-03-24T04:55	Saturn_10392_Laboca.rcp	array_10392.pdf	beams_10392.pdf
11006	2011-03-26T01:29	Saturn_11006_Laboca.rcp	array_11006.pdf	beams_11006.pdf
11459	2011-03-27T07:57	Saturn_11459_Laboca.rcp	array_11459.pdf	beams_11459.pdf
11462	2011-03-27T08:23	Saturn_11462_Laboca.rcp	array_11462.pdf	beams_11462.pdf
11702	2011-03-29T02:31	Saturn_11702_Laboca.rcp	array_11702.pdf	beams_11702.pdf
11822	2011-03-29T03:59	Saturn_11822_Laboca.rcp	array_11822.pdf	beams_11822.pdf
11839	2011-03-29T05:20	Saturn_11839_Laboca.rcp	array_11839.pdf	beams_11839.pdf
11862	2011-03-29T06:55	Saturn_11862_Laboca.rcp	array_11862.pdf	beams_11862.pdf
11880	2011-03-29T08:25	Saturn_11880_Laboca.rcp	array_11880.pdf	beams_11880.pdf
21127	2011-04-23T03:34	Saturn_21127_Laboca.rcp	array_21127.pdf	beams_21127.pdf
24761¹	2011-05-04T17:02	Uranus_24761_Laboca.rcp	array_24761.pdf	beams_24761.pdf
27244	2011-05-14T01:06	Saturn_27244_Laboca.rcp	array_27244.pdf	beams_27244.pdf
27246	2011-05-14T01:28	Saturn_27246_Laboca.rcp	array_27246.pdf	beams_27246.pdf

¹ This scan is not considered for the averaged parameter file because of its low S/N. The observations were performed in the afternoon with a rather unstable atmosphere.

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 93 and 159 are variable, but (even when ok) they pick up signal from other channels and are therefore usable only for very compact sources.
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, 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.
241	No proper signal. Picks up signal from channels 248 (strong) and 296 (weak).
222, 257	These channels are somewhat noisy, but usable (they will be weighted down by the data reduction software).

channel_flags-2011-04.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, 241 ]
# Bad channels (no/low signal)
bad = [ 6,  81,  82,  83,  84,  85,  86,  89,  90,  91,  92,  93,  94,  96, 114,
      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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