PRIME Observation Log 2025/12/10

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

Date: 2025/12/10
Local observer:
Remote observer: Ryo, Takuto
Weather: clear
Comment:
Detector Temperature: 117.00002 +- 0.00048 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:02:04
Morning 04:57:28
Science Observation
(Sun altitude < -10°)
Start 20:27:40
End 04:31:52
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start --:--:--
End --:--:--


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:16:40 08:04:12 1.026
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 08:16:40 08:04:12 1.026


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 416 00:19:49 00:49:57 0.397
SAAO 1183 00:56:23 02:04:10 0.454
OU 1183 00:56:23 02:04:10 0.454
NASA 1183 00:56:23 02:04:10 0.454
ABC 1183 00:56:23 02:04:10 0.454


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 416 00:19:49 00:49:57 0.397
offset_all_sky_grid 4732 03:45:33 08:16:40 0.454


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OJ 16 00:00:45 00:12:21 0.062
FLAT OJ 400 00:19:04 00:37:36 0.507
offset_field15440_test 52 00:02:28 00:08:46 0.283
offset_field15440 40 00:01:54 00:04:06 0.465
offset_field15441 40 00:01:54 00:04:16 0.447
offset_field15442 40 00:01:54 00:03:52 0.493
offset_field15443 40 00:01:54 00:04:13 0.452
offset_field15444 40 00:01:54 00:03:50 0.497
offset_field15445 40 00:01:54 00:04:26 0.429
offset_field15446 40 00:01:54 00:04:03 0.470
offset_field15447 40 00:01:54 00:04:21 0.437
offset_field15448 40 00:01:54 00:03:52 0.493
offset_field15449 40 00:01:54 00:04:07 0.462
offset_field15450 40 00:01:54 00:04:20 0.438
offset_field15451 40 00:01:54 00:03:47 0.503
offset_field15452 40 00:01:54 00:03:50 0.497
offset_field15453 40 00:01:54 00:03:55 0.485
offset_field15454 40 00:01:54 00:03:52 0.491
offset_field15455 40 00:01:54 00:03:52 0.491
offset_field15456 40 00:01:54 00:03:52 0.493
offset_field15457 40 00:01:54 00:04:24 0.432
offset_field15458 40 00:01:54 00:04:12 0.453
offset_field15459 40 00:01:54 00:03:47 0.503
offset_field15460 40 00:01:54 00:03:47 0.503
offset_field15461 40 00:01:54 00:03:47 0.503
offset_field15462 40 00:01:54 00:05:02 0.378
offset_field8240 40 00:01:54 00:03:47 0.503
offset_field8241 40 00:01:54 00:04:09 0.458
offset_field8242 40 00:01:54 00:04:04 0.469
offset_field8520 40 00:01:54 00:04:09 0.458
offset_field8521 40 00:01:54 00:03:47 0.503
offset_field8522 40 00:01:54 00:03:50 0.497
offset_field8523 40 00:01:54 00:03:50 0.497
offset_field8524 40 00:01:54 00:04:01 0.474
offset_field8525 40 00:01:54 00:03:54 0.487
offset_field8526 40 00:01:54 00:04:16 0.447
offset_field8527 40 00:01:54 00:03:47 0.503
offset_field8528 40 00:01:54 00:03:50 0.497
offset_field8529 40 00:01:54 00:03:58 0.480
offset_field8530 40 00:01:54 00:04:00 0.475
offset_field8531 40 00:01:54 00:04:15 0.447
offset_field8803 40 00:01:54 00:03:52 0.491
offset_field8804 40 00:01:54 00:04:34 0.416
offset_field8805 40 00:01:54 00:04:01 0.474
offset_field8806 40 00:01:54 00:04:20 0.438
offset_field8807 40 00:01:54 00:04:01 0.474
offset_field8808 40 00:01:54 00:04:20 0.438
offset_field8809 40 00:01:54 00:03:47 0.503
offset_field8810 40 00:01:54 00:04:29 0.425
offset_field8811 40 00:01:54 00:03:58 0.480
offset_field8812 40 00:01:54 00:03:47 0.503
offset_field8813 40 00:01:54 00:03:47 0.503
offset_field8814 40 00:01:54 00:03:47 0.503
offset_field8815 40 00:01:54 00:04:11 0.455
offset_field8816 40 00:01:54 00:03:59 0.478
offset_field8817 40 00:01:54 00:03:58 0.480
offset_field8818 40 00:01:54 00:03:52 0.491
offset_field8819 40 00:01:54 00:04:01 0.474
offset_field8820 40 00:01:54 00:04:18 0.443
offset_field8821 40 00:01:54 00:04:00 0.476
offset_field8822 40 00:01:54 00:04:02 0.472
offset_field8823 40 00:01:54 00:04:00 0.476
offset_field8824 40 00:01:54 00:04:07 0.462
offset_field8825 40 00:01:54 00:03:58 0.480
offset_field8826 40 00:01:54 00:04:09 0.458
offset_field8827 40 00:01:54 00:03:50 0.497
offset_field8828 40 00:01:54 00:04:06 0.463
offset_field8829 40 00:01:54 00:04:00 0.476
offset_field8830 40 00:01:54 00:04:30 0.424
offset_field8831 40 00:01:54 00:03:47 0.503
offset_field8832 40 00:01:54 00:03:47 0.503
offset_field8833 40 00:01:54 00:03:50 0.497
offset_field8834 40 00:01:54 00:04:09 0.458
offset_field8835 40 00:01:54 00:04:06 0.463
offset_field8836 40 00:01:54 00:03:50 0.497
offset_field8837 40 00:01:54 00:04:32 0.420
offset_field8838 40 00:01:54 00:03:50 0.497
offset_field8839 40 00:01:54 00:04:18 0.443
offset_field8840 40 00:01:54 00:04:12 0.453
offset_field8841 40 00:01:54 00:04:12 0.453
offset_field8842 40 00:01:54 00:03:50 0.497
offset_field8843 40 00:01:54 00:04:15 0.448
offset_field8844 40 00:01:54 00:03:47 0.503
offset_field8845 40 00:01:54 00:04:06 0.464
offset_field8846 40 00:01:54 00:04:01 0.474
offset_field8847 40 00:01:54 00:04:01 0.474
offset_field8848 40 00:01:54 00:04:46 0.400
offset_field8849 40 00:01:54 00:03:52 0.492
offset_field8850 40 00:01:54 00:04:01 0.474
offset_field8851 40 00:01:54 00:03:50 0.497
offset_field8852 40 00:01:54 00:04:04 0.469
offset_field8853 40 00:01:54 00:04:40 0.408
offset_field8854 40 00:01:54 00:04:18 0.443
offset_field8855 40 00:01:54 00:03:55 0.486
offset_field8856 40 00:01:54 00:03:58 0.479
offset_field8857 40 00:01:54 00:03:50 0.497
offset_field8858 40 00:01:54 00:03:55 0.486
offset_field8859 40 00:01:54 00:03:50 0.497
offset_field8860 40 00:01:54 00:03:58 0.480
offset_field8861 40 00:01:54 00:04:15 0.448
offset_field8862 40 00:01:54 00:03:52 0.491
offset_field8863 40 00:01:54 00:04:04 0.469
offset_field8864 40 00:01:54 00:05:52 0.324
offset_field9092 40 00:01:54 00:04:01 0.473
offset_field9093 40 00:01:54 00:03:50 0.497
offset_field9094 40 00:01:54 00:04:29 0.425
offset_field9095 40 00:01:54 00:04:18 0.443
offset_field9096 40 00:01:54 00:03:52 0.491
offset_field9097 40 00:01:54 00:03:55 0.485
offset_field9098 40 00:01:54 00:06:29 0.293
offset_field14588 40 00:01:54 00:03:55 0.485
offset_field14589 40 00:01:54 00:04:06 0.463
offset_field14590 40 00:01:54 00:03:58 0.480
offset_field14591 40 00:01:54 00:04:48 0.396
offset_field14592 40 00:01:54 00:03:52 0.491
offset_field14593 40 00:01:54 00:03:58 0.480
offset_field14594 40 00:01:54 00:04:12 0.453
offset_field14595 40 00:01:54 00:04:06 0.465
offset_field14596 40 00:01:54 00:04:12 0.453
offset_field14597 40 00:01:54 00:12:37 0.151










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 103:35:29 259:42:08 0.399
Feb 53:54:42 259:20:18 0.208
Mar 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 244:24:55 372:31:50 0.656
Jun 209:59:39 370:50:11 0.566
Jul 224:49:02 377:25:14 0.596
Aug 230:19:15 357:22:01 0.644
Sep 190:24:38 318:36:32 0.598
Oct 183:24:57 296:59:20 0.618
Nov 172:36:33 257:46:16 0.670
Dec 51:50:22 81:18:41 0.638

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 2069:27:12 1046:02:21 1023:24:50 286:33:21 245:37:09 245:37:09 245:37:09 237:13:54
Observed 1985:07:38
(95.93%)		 1046:02:21
(100.00%)		 939:05:16
(91.76%)		 218:35:16
(76.28%)		 210:00:26
(85.50%)		 331:56:52
(135.15%)		 178:32:41
(72.69%)		 237:13:54
(N/A)
Remaining 84:19:33
(4.07%)		 00:00:00
(0.00%)		 84:19:33
(8.24%)		 67:58:04
(23.72%)		 35:36:43
(14.50%)		 -87:40:18
(0.00%)		 67:04:28
(27.31%)		 00:00:00
(N/A)











Camera status (2025/12/10)



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