PRIME Observation Log 2025/01/17

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Raw Log (Time is in SA time)
Ramp Log (Time is in UT)
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Observation Log (Time is in UT)

Date: 2025/01/17
Local observer: Ryusei Hamada
Remote observer: #
Weather: clear
Comment:
Detector Temperature: 122.00034 +- 0.00257 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:11:12
Morning 05:23:08
Science Observation
(Sun altitude < -10°)
Start 20:35:55
End 04:58:25
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 04:47:01
End 04:58:25


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:34:20 08:22:29 1.024
GB Time 00:00:00 00:11:24 0.000
Non-GB Time 08:34:20 08:11:05 1.047


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 284 00:13:32 00:33:19 0.406
OU 2412 01:54:58 04:26:39 0.431
NASA 1541 01:13:27 02:36:44 0.469
ALLSKY 1540 01:13:24 03:01:53 0.404
SAAO 385 00:18:21 00:45:28 0.404
ABC 385 00:18:21 00:45:28 0.404


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 284 00:13:32 00:33:19 0.406
all_sky_grid 4193 03:19:51 07:38:09 0.436
ToO 530 00:25:15 00:56:11 0.450


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 120 00:05:43 00:18:39 0.307
field10225_test 12 00:00:34 00:12:37 0.045
field10225 60 00:02:51 00:05:23 0.530
field10521 60 00:02:51 00:05:12 0.549
field10522 60 00:02:51 00:05:18 0.539
field10224 60 00:02:51 00:05:09 0.554
field9639 60 00:02:51 00:05:18 0.539
field9933 60 00:02:51 00:05:12 0.549
field10818 60 00:02:51 00:05:18 0.539
field11121 60 00:02:51 00:05:21 0.534
field9349 60 00:02:51 00:05:09 0.554
field9350 60 00:02:51 00:05:18 0.539
field9934 60 00:02:51 00:05:23 0.530
field9348 60 00:02:51 00:06:22 0.448
field7135_test 8 00:00:22 00:04:12 0.090
field7135 49 00:02:20 00:03:56 0.594
field7134 49 00:02:20 00:04:01 0.580
field7133 49 00:02:20 00:03:56 0.594
field6873 49 00:02:20 00:03:56 0.594
field6872 49 00:02:20 00:03:50 0.608
field6871 49 00:02:20 00:04:01 0.580
field6613 49 00:02:20 00:03:53 0.601
field6614 49 00:02:20 00:03:53 0.601
field6612 49 00:02:20 00:03:56 0.594
field6611 49 00:02:20 00:03:58 0.587
field6359 49 00:02:20 00:03:58 0.587
field6358 49 00:02:20 00:03:58 0.587
field6357 49 00:02:20 00:03:56 0.594
field6356 49 00:02:20 00:03:56 0.594
field6106 49 00:02:20 00:03:56 0.594
field6108 49 00:02:20 00:03:53 0.601
field6107 49 00:02:20 00:03:56 0.594
field6105 49 00:02:20 00:04:10 0.560
field4915 49 00:02:20 00:03:58 0.587
field5146 49 00:02:20 00:09:18 0.251
field13318_test 30 00:01:25 00:14:00 0.102
field13318 500 00:23:50 00:42:10 0.565
field10226_test 45 00:02:08 00:16:21 0.131
field10226 60 00:02:51 00:05:09 0.554
field9930 60 00:02:51 00:05:09 0.554
field9932 60 00:02:51 00:05:12 0.549
field10523 60 00:02:51 00:05:12 0.549
field10227 60 00:02:51 00:05:09 0.554
field10820 60 00:02:51 00:05:15 0.544
field9638 60 00:02:51 00:05:09 0.554
field9929 60 00:02:51 00:05:12 0.549
field10223 60 00:02:51 00:05:12 0.549
field9640 60 00:02:51 00:05:12 0.549
field10519 60 00:02:51 00:05:12 0.549
field10228 60 00:02:51 00:14:20 0.200
field5380 24 00:01:08 00:01:45 0.652
field5381 24 00:01:08 00:01:45 0.652
field6109 24 00:01:08 00:01:45 0.652
field6360 24 00:01:08 00:01:45 0.652
field6361 24 00:01:08 00:01:45 0.652
field6615 24 00:01:08 00:01:45 0.652
field6874 24 00:01:08 00:12:04 0.095
field6713_test 12 00:00:34 00:11:58 0.048
field6713 40 00:01:54 00:03:50 0.497
field6714 40 00:01:54 00:03:50 0.497
field6715 40 00:01:54 00:03:50 0.497
field6716 40 00:01:54 00:03:50 0.497
field6717 40 00:01:54 00:03:47 0.503
field6718 40 00:01:54 00:03:47 0.503
field6719 40 00:01:54 00:03:50 0.497
field6720 40 00:01:54 00:03:50 0.497
field6721 40 00:01:54 00:03:47 0.503
field6722 40 00:01:54 00:03:47 0.503
field6723 40 00:01:54 00:03:50 0.497
field6724 40 00:01:54 00:03:52 0.491
field6725 40 00:01:54 00:03:52 0.491
field6726 40 00:01:54 00:04:04 0.469
field6727 40 00:01:54 00:10:42 0.178
field7497_test 8 00:00:22 00:05:50 0.065
field7497 40 00:01:54 00:03:52 0.491
field7498 40 00:01:54 00:03:50 0.497
field7499 40 00:01:54 00:03:50 0.497
field7500 40 00:01:54 00:03:50 0.497
field7501 40 00:01:54 00:03:50 0.497
field7502 40 00:01:54 00:03:47 0.503
field7503 40 00:01:54 00:03:47 0.503
field7504 40 00:01:54 00:07:09 0.267
field6467 40 00:01:54 00:03:47 0.503
field6468 40 00:01:54 00:03:47 0.503
field6469 40 00:01:54 00:03:50 0.497
field6470 40 00:01:54 00:03:50 0.497
field6471 40 00:01:54 00:03:50 0.497
field6472 40 00:01:54 00:03:50 0.497
field6473 40 00:01:54 00:03:47 0.503
field6474 40 00:01:54 00:03:47 0.503
field6475 40 00:01:54 00:09:57 0.192
field7505 40 00:01:54 00:04:12 0.453
field7506 40 00:01:54 00:03:47 0.503
field7507 40 00:01:54 00:03:47 0.503
field7508 40 00:01:54 00:03:50 0.497
field7509 40 00:01:54 00:03:50 0.497
field7510 40 00:01:54 00:05:42 0.334
FLAT_test OJ 4 00:00:11 00:00:47 0.239
FLAT OJ 160 00:07:37 00:13:52 0.550










Stats so far in 2025
Monthly observed fraction so far in 2025
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 74:39:30 139:35:21 0.535

Observed time so far in 2025
- Total time of each institute is calculated by the following
    [All observation time in 2025] = [Observed time so far] + [Remaining time in the future]
    [Remaining time in the future] = [Clear sky fraction] x [Remaining night time (Sun alt. < -10°)]
    
    [GB observation time in 2025] = [Observed GB time so far] + [Remaining GB time in the future]
    [Remaining GB time in the future] = [Clear sky fraction] x [Remaining GB night time (Sun alt. < -10° & GB alt. > 22°)]
    
    [Non-GB observation time in 2025] = [All observation time in 2025] - [GB observation time in 2025]
    
    [OU, NASA, ABC time in 2025] = 0.24 x [Non-GB observation time in 2025]
    [SAAO time in 2025] = 0.28 x [Non-GB observation time in 2025]
    
- ALLSKY time is equally distributed to each institute
- ToO time is distributed to each institute based on input of observer of each date
- Clear sky fraction of (0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5) is assumed for (Jan, ..., Dec) in the calculation of the remaining observation time
All
(hh:mm:ss) 		GB
(hh:mm:ss) 		Non-GB
(hh:mm:ss) 		SAAO
(hh:mm:ss) 		OU
(hh:mm:ss) 		NASA
(hh:mm:ss) 		ABC
(hh:mm:ss) 		CALIB
(hh:mm:ss)
Total 1893:45:48 945:23:01 948:22:46 265:32:46 227:36:40 227:36:40 227:36:40 08:35:15
Observed 74:39:31
(3.94%)		 00:00:00
(0.00%)		 74:39:31
(7.87%)		 01:29:19
(0.56%)		 17:42:04
(7.78%)		 53:58:48
(23.72%)		 01:29:19
(0.65%)		 08:35:15
(N/A)
Remaining 1819:06:17
(96.06%)		 945:23:01
(100.00%)		 873:43:15
(92.13%)		 264:03:27
(99.44%)		 209:54:35
(92.22%)		 173:37:51
(76.28%)		 226:07:20
(99.35%)		 00:00:00
(N/A)











Camera status (2025/01/17)