PRIME Observation Log 2025/12/28

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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: 2025/12/28
Local observer:
Remote observer: DSuzuki
Weather: clear
Comment:
Detector Temperature: 118.18263 +- 0.11338 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:11:46
Morning 05:05:32
Science Observation
(Sun altitude < -10°)
Start 20:37:28
End 04:39:50
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 08:04:02 08:02:22 1.003
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 08:04:02 08:02:22 1.003


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 500 00:23:50 00:48:25 0.492
SAAO 1181 00:56:17 02:01:00 0.465
OU 1181 00:56:17 02:01:00 0.465
NASA 1181 00:56:17 02:01:00 0.465
ABC 1181 00:56:17 02:01:00 0.465


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 500 00:23:50 00:48:25 0.492
offset_all_sky_grid 4684 03:43:16 07:57:49 0.467
all_sky_grid 40 00:01:54 00:06:12 0.307


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 500 00:23:50 00:48:25 0.492
offset_field14826_test 40 00:01:54 00:21:26 0.089
offset_field14826 40 00:01:54 00:03:50 0.497
offset_field14827 40 00:01:54 00:03:55 0.485
offset_field14828 40 00:01:54 00:03:58 0.480
offset_field14834 40 00:01:54 00:03:55 0.485
offset_field14835 40 00:01:54 00:03:52 0.491
offset_field14836 40 00:01:54 00:03:52 0.491
offset_field14837 40 00:01:54 00:03:47 0.503
offset_field14838 40 00:01:54 00:05:14 0.364
offset_field4266 40 00:01:54 00:03:52 0.491
offset_field4053 40 00:01:54 00:03:50 0.497
offset_field4054 40 00:01:54 00:03:50 0.497
offset_field4267 40 00:01:54 00:03:47 0.503
offset_field4268 40 00:01:54 00:03:47 0.503
offset_field4269 40 00:01:54 00:03:47 0.503
offset_field4270 40 00:01:54 00:03:47 0.503
offset_field4271 40 00:01:54 00:03:50 0.497
offset_field4486 40 00:01:54 00:03:47 0.503
offset_field4487 40 00:01:54 00:03:47 0.503
offset_field4488 40 00:01:54 00:03:47 0.503
offset_field4489 40 00:01:54 00:03:47 0.503
offset_field4490 40 00:01:54 00:03:47 0.503
offset_field4491 40 00:01:54 00:03:47 0.503
offset_field4492 40 00:01:54 00:03:47 0.503
offset_field4493 40 00:01:54 00:03:50 0.497
offset_field4494 40 00:01:54 00:03:58 0.480
offset_field4495 40 00:01:54 00:03:52 0.491
offset_field4496 40 00:01:54 00:03:47 0.503
offset_field4497 40 00:01:54 00:03:47 0.503
offset_field4498 40 00:01:54 00:03:52 0.491
offset_field4710 40 00:01:54 00:03:47 0.503
offset_field4711 40 00:01:54 00:03:47 0.503
offset_field4712 40 00:01:54 00:03:55 0.485
offset_field4713 40 00:01:54 00:03:52 0.491
offset_field4714 40 00:01:54 00:03:52 0.491
offset_field4715 40 00:01:54 00:03:47 0.503
offset_field4716 40 00:01:54 00:03:47 0.503
offset_field4717 40 00:01:54 00:03:47 0.503
offset_field4718 40 00:01:54 00:03:47 0.503
offset_field4719 40 00:01:54 00:03:47 0.503
offset_field4720 40 00:01:54 00:03:47 0.503
offset_field4721 40 00:01:54 00:03:47 0.503
offset_field4722 40 00:01:54 00:03:50 0.497
offset_field4723 40 00:01:54 00:03:52 0.491
offset_field4724 40 00:01:54 00:03:50 0.497
offset_field4725 40 00:01:54 00:03:50 0.497
offset_field4726 40 00:01:54 00:03:50 0.497
offset_field4727 40 00:01:54 00:03:50 0.497
offset_field4728 40 00:01:54 00:03:50 0.497
offset_field4729 40 00:01:54 00:03:47 0.503
offset_field4730 40 00:01:54 00:03:47 0.503
offset_field4731 40 00:01:54 00:03:47 0.503
offset_field4732 40 00:01:54 00:03:47 0.503
offset_field4733 40 00:01:54 00:03:47 0.503
offset_field4734 40 00:01:54 00:03:47 0.503
offset_field4735 40 00:01:54 00:03:47 0.503
offset_field4736 40 00:01:54 00:03:47 0.503
offset_field4737 40 00:01:54 00:03:47 0.503
offset_field4738 40 00:01:54 00:03:47 0.503
offset_field4739 40 00:01:54 00:03:47 0.503
offset_field4740 40 00:01:54 00:03:47 0.503
offset_field4741 40 00:01:54 00:03:47 0.503
offset_field4742 40 00:01:54 00:03:47 0.503
offset_field4743 40 00:01:54 00:03:47 0.503
offset_field4744 40 00:01:54 00:03:47 0.503
offset_field4745 40 00:01:54 00:03:47 0.503
offset_field4746 40 00:01:54 00:03:47 0.503
offset_field4747 40 00:01:54 00:03:47 0.503
offset_field4748 40 00:01:54 00:03:47 0.504
offset_field4749 40 00:01:54 00:04:32 0.420
offset_field4945 40 00:01:54 00:03:58 0.480
offset_field4946 40 00:01:54 00:04:01 0.474
offset_field4947 40 00:01:54 00:03:52 0.491
offset_field4948 40 00:01:54 00:03:52 0.491
offset_field4949 40 00:01:54 00:03:55 0.485
offset_field4950 40 00:01:54 00:03:52 0.491
offset_field4951 40 00:01:54 00:03:52 0.491
offset_field4952 40 00:01:54 00:03:52 0.491
offset_field4953 40 00:01:54 00:03:55 0.485
offset_field4954 40 00:01:54 00:03:55 0.485
offset_field4955 40 00:01:54 00:03:52 0.491
offset_field4956 40 00:01:54 00:03:55 0.485
offset_field4957 40 00:01:54 00:03:52 0.491
offset_field4958 40 00:01:54 00:03:55 0.485
offset_field4959 40 00:01:54 00:03:50 0.497
offset_field4960 40 00:01:54 00:03:55 0.485
offset_field4961 40 00:01:54 00:03:55 0.485
offset_field4962 40 00:01:54 00:03:50 0.497
offset_field4963 40 00:01:54 00:03:52 0.491
offset_field4964 40 00:01:54 00:03:50 0.497
offset_field4965 40 00:01:54 00:03:52 0.491
offset_field4966 40 00:01:54 00:03:52 0.491
offset_field4967 40 00:01:54 00:03:52 0.491
offset_field4968 40 00:01:54 00:03:50 0.497
offset_field4969 40 00:01:54 00:03:50 0.497
offset_field4970 40 00:01:54 00:03:50 0.497
offset_field4971 40 00:01:54 00:03:52 0.491
offset_field4972 40 00:01:54 00:03:55 0.485
offset_field4973 40 00:01:54 00:03:50 0.497
offset_field4974 40 00:01:54 00:03:58 0.480
offset_field4975 40 00:01:54 00:03:52 0.491
offset_field4976 40 00:01:54 00:03:52 0.491
offset_field4977 40 00:01:54 00:04:01 0.474
offset_field4978 40 00:01:54 00:03:52 0.491
offset_field4979 40 00:01:54 00:03:47 0.503
offset_field4980 40 00:01:54 00:03:55 0.485
offset_field4981 40 00:01:54 00:04:57 0.385
field16517 40 00:01:54 00:06:12 0.307
offset_field11199_test 4 00:00:11 00:01:01 0.185
offset_field11199 40 00:01:54 00:03:52 0.491
offset_field11200 40 00:01:54 00:03:50 0.497
offset_field11201 40 00:01:54 00:04:54 0.388
offset_field11476 40 00:01:54 00:03:52 0.491
offset_field11477 40 00:01:54 00:03:52 0.491
offset_field11478 40 00:01:54 00:03:50 0.497
offset_field11479 40 00:01:54 00:03:50 0.497
offset_field11480 40 00:01:54 00:03:50 0.497
offset_field11481 40 00:01:54 00:03:50 0.497
offset_field11482 40 00:01:54 00:08:52 0.215










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 133:39:56 225:47:34 0.592

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 2079:02:19 1046:02:21 1032:59:57 289:14:23 247:55:11 247:55:11 247:55:11 242:37:32
Observed 2066:57:12
(99.42%)		 1046:02:21
(100.00%)		 1020:54:50
(98.83%)		 232:57:03
(80.54%)		 226:28:08
(91.35%)		 368:35:10
(148.67%)		 192:54:27
(77.81%)		 242:37:32
(N/A)
Remaining 12:05:06
(0.58%)		 00:00:00
(0.00%)		 12:05:06
(1.17%)		 56:17:20
(19.46%)		 21:27:02
(8.65%)		 -121:20:01
(0.00%)		 55:00:43
(22.19%)		 00:00:00
(N/A)











Camera status (2025/12/28)



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