PRIME Observation Log 2025/12/08

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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: 2025/12/08
Local observer:
Remote observer: Takuto,Ose,Ueda
Weather: clear
Comment:
Detector Temperature: 116.99993 +- 0.00151 K
ImageAcquisitionErrors occurred 3 times @
2025-12-08 20:42:56 SAT
2025-12-08 23:14:29 SAT
2025-12-08 23:31:44 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:00:31
Morning 04:57:11
Science Observation
(Sun altitude < -10°)
Start 20:26:03
End 04:31:39
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 08:25:29 08:05:35 1.041
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 08:25:29 08:05:35 1.041


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 364 00:17:21 00:38:16 0.453
SAAO 1133 00:54:00 02:06:22 0.427
OU 1133 00:54:00 02:06:22 0.427
NASA 1133 00:54:00 02:06:22 0.427
ABC 1133 00:54:00 02:06:22 0.427


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 364 00:17:21 00:38:16 0.453
offset_all_sky_grid 4532 03:36:01 08:25:29 0.427


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test ZO 4 00:00:11 00:03:19 0.057
FLAT ZO 360 00:17:09 00:34:57 0.491
offset_field15751_test 4 00:00:11 00:02:37 0.073
offset_field15751 40 00:01:54 00:04:04 0.469
offset_field15752 40 00:01:54 00:04:06 0.463
offset_field15753 40 00:01:54 00:04:12 0.453
offset_field15754 40 00:01:54 00:04:09 0.458
offset_field15755 40 00:01:54 00:04:06 0.463
offset_field15756 40 00:01:54 00:03:52 0.491
offset_field15757 76 00:03:37 00:10:11 0.355
offset_field15758 40 00:01:54 00:04:11 0.454
offset_field15759 40 00:01:54 00:03:58 0.479
offset_field15760 40 00:01:54 00:04:04 0.469
offset_field15761 40 00:01:54 00:04:01 0.474
offset_field15762 40 00:01:54 00:04:32 0.420
offset_field15763 40 00:01:54 00:04:01 0.474
offset_field15764 40 00:01:54 00:04:29 0.425
offset_field15765 40 00:01:54 00:04:04 0.469
offset_field15766 40 00:01:54 00:03:58 0.480
offset_field15767 40 00:01:54 00:04:06 0.463
offset_field15768 40 00:01:54 00:04:18 0.443
offset_field15769 40 00:01:54 00:03:52 0.491
offset_field15770 40 00:01:54 00:04:26 0.429
offset_field15771 40 00:01:54 00:04:32 0.421
offset_field15772 40 00:01:54 00:04:20 0.438
offset_field15773 40 00:01:54 00:03:52 0.491
offset_field15774 40 00:01:54 00:04:03 0.469
offset_field15775 40 00:01:54 00:04:18 0.443
offset_field15776 40 00:01:54 00:04:09 0.458
offset_field15777 40 00:01:54 00:04:06 0.463
offset_field15778 40 00:01:54 00:04:57 0.385
offset_field10840 40 00:01:54 00:03:52 0.491
offset_field10841 40 00:01:54 00:04:37 0.412
offset_field10842 40 00:01:54 00:04:09 0.458
offset_field10843 40 00:01:54 00:03:55 0.485
offset_field10844 40 00:01:54 00:04:21 0.438
offset_field10845 40 00:01:54 00:04:26 0.430
offset_field11746 40 00:01:54 00:04:18 0.443
offset_field11747 40 00:01:54 00:04:01 0.474
offset_field11748 40 00:01:54 00:03:47 0.503
offset_field11749 40 00:01:54 00:04:32 0.420
offset_field11750 40 00:01:54 00:04:06 0.463
offset_field11751 40 00:01:54 00:04:29 0.425
offset_field11752 40 00:01:54 00:04:54 0.389
offset_field11753 48 00:02:17 00:17:15 0.133
offset_field11754 48 00:02:17 00:07:10 0.319
offset_field11755 40 00:01:54 00:04:23 0.434
offset_field11756 40 00:01:54 00:04:06 0.463
offset_field11757 40 00:01:54 00:04:23 0.434
offset_field11758 40 00:01:54 00:04:34 0.416
offset_field11759 40 00:01:54 00:04:18 0.443
offset_field11760 40 00:01:54 00:03:50 0.497
offset_field11761 40 00:01:54 00:04:18 0.443
offset_field11762 40 00:01:54 00:04:15 0.448
offset_field11763 40 00:01:54 00:04:18 0.443
offset_field11764 40 00:01:54 00:03:53 0.491
offset_field11765 40 00:01:54 00:04:26 0.429
offset_field11766 40 00:01:54 00:04:04 0.469
offset_field11767 40 00:01:54 00:03:50 0.497
offset_field11768 40 00:01:54 00:04:06 0.463
offset_field11769 40 00:01:54 00:04:04 0.469
offset_field11770 40 00:01:54 00:04:06 0.463
offset_field11771 40 00:01:54 00:04:18 0.443
offset_field11772 40 00:01:54 00:03:58 0.480
offset_field11773 40 00:01:54 00:04:32 0.420
offset_field11774 40 00:01:54 00:04:20 0.438
offset_field11775 40 00:01:54 00:03:58 0.480
offset_field11776 40 00:01:54 00:04:18 0.443
offset_field11777 40 00:01:54 00:04:14 0.449
offset_field11778 72 00:03:25 00:11:18 0.303
offset_field11779 40 00:01:54 00:03:50 0.497
offset_field11780 40 00:01:54 00:04:18 0.443
offset_field11781 40 00:01:54 00:04:40 0.408
offset_field11782 40 00:01:54 00:04:01 0.474
offset_field11783 40 00:01:54 00:04:06 0.464
offset_field11784 40 00:01:54 00:03:50 0.497
offset_field11785 40 00:01:54 00:03:50 0.497
offset_field11786 40 00:01:54 00:04:23 0.434
offset_field11787 40 00:01:54 00:04:06 0.463
offset_field11788 40 00:01:54 00:04:06 0.463
offset_field11789 40 00:01:54 00:04:34 0.416
offset_field11790 40 00:01:54 00:03:47 0.503
offset_field11791 40 00:01:54 00:04:04 0.469
offset_field11792 40 00:01:54 00:04:04 0.469
offset_field11793 40 00:01:54 00:04:18 0.443
offset_field11794 40 00:01:54 00:03:50 0.497
offset_field11795 40 00:01:54 00:04:06 0.464
offset_field11796 40 00:01:54 00:03:58 0.480
offset_field11797 40 00:01:54 00:04:15 0.448
offset_field11798 40 00:01:54 00:03:55 0.485
offset_field11799 40 00:01:54 00:04:48 0.396
offset_field11800 40 00:01:54 00:03:50 0.497
offset_field11801 40 00:01:54 00:04:04 0.469
offset_field11802 40 00:01:54 00:03:52 0.491
offset_field11803 40 00:01:54 00:04:06 0.463
offset_field11804 40 00:01:54 00:04:12 0.453
offset_field11805 40 00:01:54 00:04:18 0.443
offset_field11806 40 00:01:54 00:04:31 0.421
offset_field11807 40 00:01:54 00:05:39 0.337
offset_field12062 40 00:01:54 00:03:52 0.491
offset_field12063 40 00:01:54 00:04:04 0.469
offset_field12064 40 00:01:54 00:03:58 0.480
offset_field12065 40 00:01:54 00:04:54 0.388
offset_field12066 40 00:01:54 00:03:55 0.485
offset_field12067 40 00:01:54 00:04:29 0.425
offset_field12068 40 00:01:54 00:03:55 0.485
offset_field12069 40 00:01:54 00:03:50 0.497
offset_field12070 40 00:01:54 00:04:04 0.469
offset_field12071 40 00:01:54 00:04:01 0.474
offset_field12072 40 00:01:54 00:08:10 0.233
offset_field13028 40 00:01:54 00:04:06 0.463
offset_field13029 40 00:01:54 00:04:01 0.474
offset_field13030 40 00:01:54 00:04:15 0.448
offset_field13031 40 00:01:54 00:03:52 0.491
offset_field13032 4 00:00:11 00:04:34 0.042










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 40:06:24 65:09:36 0.616

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 2065:47:45 1046:02:21 1019:45:24 285:31:54 244:44:29 244:44:29 244:44:29 235:42:27
Observed 1973:23:39
(95.53%)		 1046:02:21
(100.00%)		 927:21:17
(90.94%)		 215:39:16
(75.53%)		 207:04:26
(84.61%)		 329:00:52
(134.43%)		 175:36:41
(71.75%)		 235:42:27
(N/A)
Remaining 92:24:06
(4.47%)		 00:00:00
(0.00%)		 92:24:06
(9.06%)		 69:52:37
(24.47%)		 37:40:03
(15.39%)		 -85:43:38
(0.00%)		 69:07:47
(28.25%)		 00:00:00
(N/A)











Camera status (2025/12/08)



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