PAPER Polarimetry: Data Collection

Please note that the location observed by the antenna is centered on 38.4 degrees declination, and the right ascension (local sidereal time) is provided on the longer scans. See below for a summary of data runs...

Short Data Runs

OBS ID START TIME (LST) END TIME (LST) GRAPH, CHAN A GRAPH, CHAN B
DIAG_DATA_9AUG19_1 12:12:33 12:42:33 9AUG19_1A.png 9AUG19_1B.png
DIAG_DATA_9AUG19_2 12:45:22 13:15:22 9AUG19_2A.png 9AUG19_2B.png
DIAG_DATA_9AUG19_3 13:17:59 13:47:59 9AUG19_3A.png 9AUG19_3B.png
DIAG_DATA_9AUG19_4 13:50:36 14:20:36 9AUG19_4A.png 9AUG19_4B.png
DIAG_DATA_10AUG19_1 12:11:18 14:11:18 10AUG19_1A.png 10AUG19_1B.png
DIAG_DATA_11AUG19_1 12:11:36 14:11:36 11AUG19_1A.png 11AUG19_1B.png

*Note that integration times for scans on Aug. 9-11, 2019, were about 0.6 minutes long.

There seems to be a general increase in the antenna temperature levels later on in the observing sessions -- an increase of apparently 2-3 K, which seems to be consistent for all three nights.

24-Hour Data Runs

OBS ID START TIME (LST) OBS DURATION GRAPH, CHAN A GRAPH, CHAN B
DIAG_DATA_13AUG19_1 11:57:02 24 hrs 13AUG19_1A_LST.png 13AUG19_1B_LST.png
DIAG_DATA_16AUG19_1 13:01:44 24 hrs 16AUG19_1A.png 16AUG19_1B.png
DIAG_DATA_17AUG19_1 13:01:44 24 hrs 17AUG19_1A.png 17AUG19_1B.png
DIAG_DATA_19AUG19_1 15:29:55 24 hrs 19AUG19_AB.png  
DIAG_DATA_20AUG19_1 13:01:44 24 hrs 20AUG19_A.png 20AUG19_B.png
DIAG_DATA_22AUG19_1 05:15:36 24 hrs 22AUG19_1A.png 22AUG19_1B.png
DIAG_DATA_24AUG19_1 06:28:27 24 hrs 24AUG19_1A.png 24AUG19_1B.png
DIAG_DATA_25AUG19_1 08:00:31 24 hrs 25AUG19_1A.png 25AUG19_1B.png
DIAG_DATA_28AUG19_1 14:00:42 24 hrs 28AUG19_1A.png 28AUG19_1B.png

*Integration times are approximately 3 mins.

Aug. 17, 2019 data

Note about Aug. 17 data: there is a mysterious signal starting around LST = 12:00:00, which looks to be RFI. Here are links to the averaged bandpass plots for both channels taken during this observation: 17AUG1A_bandpass.png and 17AUG1B_bandpass.png

It was determined that this was broadband RFI caused by lightning, which can also be seen in several other subsequent data runs.

Aug. 20, 2019 data

While most data sets' graphs are formed by averaging 100 adjacent FFT bins starting at 169.158 MHz, this piece of the spectrum contained narrowband RFI for the Aug. 20 data set. Thus, the Aug. 20 graphs are formed by averaging 100 adjacent FFT bins starting at 168.084 MHz.

-- EllieWhite - 2019-08-12
Topic attachments
I Attachment Action Size Date Who Comment
10AUG19_1A.pngpng 10AUG19_1A.png manage 60 K 2019-08-12 - 15:52 UnknownUser  
10AUG19_1B.pngpng 10AUG19_1B.png manage 61 K 2019-08-12 - 15:53 UnknownUser  
11AUG19_1A.pngpng 11AUG19_1A.png manage 62 K 2019-08-12 - 15:53 UnknownUser  
11AUG19_1B.pngpng 11AUG19_1B.png manage 39 K 2019-08-12 - 15:53 UnknownUser  
13AUG19_1A.pngpng 13AUG19_1A.png manage 77 K 2019-08-16 - 16:35 UnknownUser  
13AUG19_1A_LST.pngpng 13AUG19_1A_LST.png manage 77 K 2019-08-16 - 16:38 UnknownUser  
13AUG19_1B.pngpng 13AUG19_1B.png manage 77 K 2019-08-16 - 16:16 UnknownUser  
13AUG19_1B_LST.pngpng 13AUG19_1B_LST.png manage 77 K 2019-08-16 - 16:39 UnknownUser  
16AUG19_1A.pngpng 16AUG19_1A.png manage 80 K 2019-08-17 - 17:42 UnknownUser  
16AUG19_1B.pngpng 16AUG19_1B.png manage 82 K 2019-08-17 - 17:42 UnknownUser  
17AUG19_1A.pngpng 17AUG19_1A.png manage 82 K 2019-08-19 - 18:48 UnknownUser  
17AUG19_1B.pngpng 17AUG19_1B.png manage 83 K 2019-08-19 - 18:48 UnknownUser  
17AUG1A_bandpass.pngpng 17AUG1A_bandpass.png manage 19 K 2019-08-19 - 20:52 UnknownUser  
17AUG1B_bandpass.pngpng 17AUG1B_bandpass.png manage 15 K 2019-08-19 - 20:53 UnknownUser  
19AUG19_AB.pngpng 19AUG19_AB.png manage 107 K 2019-08-20 - 20:15 UnknownUser  
20AUG19_A.pngpng 20AUG19_A.png manage 78 K 2019-08-22 - 08:12 UnknownUser  
20AUG19_B.pngpng 20AUG19_B.png manage 77 K 2019-08-22 - 08:13 UnknownUser  
22AUG19_1A.pngpng 22AUG19_1A.png manage 81 K 2019-08-24 - 09:26 UnknownUser  
22AUG19_1B.pngpng 22AUG19_1B.png manage 81 K 2019-08-24 - 09:27 UnknownUser  
24AUG19_1A.pngpng 24AUG19_1A.png manage 78 K 2019-08-25 - 10:22 UnknownUser  
24AUG19_1B.pngpng 24AUG19_1B.png manage 80 K 2019-08-25 - 10:22 UnknownUser  
25AUG19_1A.pngpng 25AUG19_1A.png manage 76 K 2019-08-28 - 16:38 UnknownUser  
25AUG19_1B.pngpng 25AUG19_1B.png manage 81 K 2019-08-28 - 16:38 UnknownUser  
28AUG19_1A.pngpng 28AUG19_1A.png manage 88 K 2019-08-30 - 12:35 UnknownUser  
28AUG19_1B.pngpng 28AUG19_1B.png manage 83 K 2019-08-30 - 12:35 UnknownUser  
9AUG19_1A.pngpng 9AUG19_1A.png manage 53 K 2019-08-12 - 15:45 UnknownUser  
9AUG19_1B.pngpng 9AUG19_1B.png manage 30 K 2019-08-12 - 15:46 UnknownUser  
9AUG19_2A.pngpng 9AUG19_2A.png manage 29 K 2019-08-12 - 15:49 UnknownUser  
9AUG19_2B.pngpng 9AUG19_2B.png manage 30 K 2019-08-12 - 15:49 UnknownUser  
9AUG19_3A.pngpng 9AUG19_3A.png manage 27 K 2019-08-12 - 15:49 UnknownUser  
9AUG19_3B.pngpng 9AUG19_3B.png manage 27 K 2019-08-12 - 15:49 UnknownUser  
9AUG19_4A.pngpng 9AUG19_4A.png manage 36 K 2019-08-12 - 15:50 UnknownUser  
9AUG19_4B.pngpng 9AUG19_4B.png manage 24 K 2019-08-12 - 15:50 UnknownUser  
Topic revision: r12 - 2019-08-30, EllieWhite
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