PRIME Observation Log 2025/01/18

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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: 2025/01/18
Local observer: Ryusei Hamada
Remote observer: #
Weather: clear
Comment:
Detector Temperature: 121.99982 +- 0.00261 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:10:51
Morning 05:24:08
Science Observation
(Sun altitude < -10°)
Start 20:35:30
End 04:59:28
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 04:43:05
End 04:59:28


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:24:21 08:23:58 1.001
GB Time 00:00:00 00:16:23 0.000
Non-GB Time 08:24:21 08:07:35 1.034


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 300 00:14:18 00:28:05 0.509
NASA 3056 02:25:40 04:51:50 0.499
OU 1500 01:11:30 02:38:41 0.451
SAAO 236 00:11:14 00:26:54 0.418
ABC 236 00:11:14 00:26:54 0.418


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 300 00:14:18 00:28:05 0.509
all_sky_grid 4488 03:33:55 07:23:53 0.482
ToO 540 00:25:44 01:00:27 0.426


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OH 124 00:05:54 00:11:23 0.519
field7136_test 20 00:00:57 00:07:04 0.135
field7136 49 00:02:20 00:05:11 0.449
field5382 49 00:02:20 00:04:01 0.580
field5383 49 00:02:20 00:03:58 0.587
field5384 49 00:02:20 00:04:10 0.560
field5147 49 00:02:20 00:04:04 0.573
field5148 49 00:02:20 00:04:04 0.573
field5149 49 00:02:20 00:04:10 0.560
field4916 49 00:02:20 00:04:01 0.580
field4917 49 00:02:20 00:04:07 0.567
field4918 49 00:02:20 00:04:10 0.560
field4693 49 00:02:20 00:04:04 0.573
field4694 49 00:02:20 00:04:04 0.573
field4695 49 00:02:20 00:04:57 0.471
field5380_test 12 00:00:34 00:04:52 0.117
field5380 25 00:01:11 00:02:16 0.524
field5381 25 00:01:11 00:02:27 0.485
field6109 25 00:01:11 00:02:16 0.524
field6360 25 00:01:11 00:02:10 0.547
field6361 25 00:01:11 00:02:13 0.535
field6615 25 00:01:11 00:02:16 0.524
field6874 25 00:01:11 00:02:13 0.535
field4919 49 00:02:20 00:03:56 0.594
field4920 49 00:02:20 00:03:56 0.594
field4921 49 00:02:20 00:03:58 0.587
field4922 49 00:02:20 00:04:04 0.573
field5150 49 00:02:20 00:03:56 0.594
field5151 49 00:02:20 00:03:58 0.587
field5152 49 00:02:20 00:03:58 0.587
field5153 49 00:02:20 00:04:01 0.580
field5385 49 00:02:20 00:03:56 0.594
field5386 49 00:02:20 00:03:56 0.594
field5387 49 00:02:20 00:03:58 0.587
field5388 49 00:02:20 00:03:53 0.601
field5389 49 00:02:20 00:03:58 0.587
field5390 49 00:02:20 00:03:58 0.587
field5391 49 00:02:20 00:03:56 0.594
field5154 49 00:02:20 00:03:56 0.594
field5155 49 00:02:20 00:03:58 0.587
field5156 49 00:02:20 00:03:58 0.587
field4923 49 00:02:20 00:03:56 0.594
field4924 49 00:02:20 00:07:29 0.312
field13318_test 40 00:01:54 00:13:52 0.137
field13318 500 00:23:50 00:46:34 0.512
field9931_test 4 00:00:11 00:01:32 0.123
field9931 60 00:02:51 00:05:12 0.549
field10520 60 00:02:51 00:05:07 0.559
field10819 60 00:02:51 00:05:12 0.549
field10821 60 00:02:51 00:05:18 0.539
field9637 60 00:02:51 00:05:12 0.549
field10524 60 00:02:51 00:05:09 0.554
field10822 60 00:02:51 00:05:09 0.554
field11120 60 00:02:51 00:05:15 0.544
field9928 60 00:02:51 00:05:15 0.544
field11119 60 00:02:51 00:05:12 0.549
field9641 60 00:02:51 00:05:12 0.549
field10222 60 00:02:51 00:12:27 0.230
field4919_test 4 00:00:11 00:05:17 0.036
field4925 49 00:02:20 00:03:56 0.594
field4696 49 00:02:20 00:04:01 0.580
field4697 49 00:02:20 00:03:56 0.594
field4698 49 00:02:20 00:03:56 0.594
field4699 49 00:02:20 00:03:56 0.594
field4700 49 00:02:20 00:03:56 0.594
field4701 49 00:02:20 00:03:53 0.601
field4702 49 00:02:20 00:03:56 0.594
field4926 49 00:02:20 00:03:53 0.601
field4927 49 00:02:20 00:04:01 0.580
field4928 49 00:02:20 00:03:50 0.608
field4929 49 00:02:20 00:03:56 0.594
field5157 49 00:02:20 00:03:53 0.601
field5158 49 00:02:20 00:03:58 0.587
field5159 49 00:02:20 00:03:56 0.594
field5160 49 00:02:20 00:03:58 0.587
field5392 49 00:02:20 00:03:53 0.601
field5393 49 00:02:20 00:03:56 0.594
field5394 49 00:02:20 00:03:56 0.594
field5395 49 00:02:20 00:16:52 0.138
field4925_test 12 00:00:34 00:02:12 0.259
field7763_test 24 00:01:08 00:12:27 0.092
field7763 40 00:01:54 00:04:15 0.448
field7764 40 00:01:54 00:03:50 0.497
field7765 40 00:01:54 00:03:52 0.491
field7766 40 00:01:54 00:03:50 0.497
field7767 40 00:01:54 00:03:50 0.497
field7768 40 00:01:54 00:03:55 0.485
field7769 40 00:01:54 00:03:52 0.491
field7770 40 00:01:54 00:03:58 0.480
field7771 40 00:01:54 00:03:58 0.480
field7772 40 00:01:54 00:03:50 0.497
field7773 40 00:01:54 00:03:52 0.491
field7774 40 00:01:54 00:03:52 0.491
field7775 40 00:01:54 00:04:48 0.396
field7776 40 00:01:54 00:03:55 0.485
field7777 40 00:01:54 00:03:50 0.497
field7778 40 00:01:54 00:03:52 0.491
field7779 40 00:01:54 00:03:55 0.485
field7780 40 00:01:54 00:03:55 0.485
field7781 40 00:01:54 00:03:52 0.491
field7782 40 00:01:54 00:03:55 0.485
field7783 40 00:01:54 00:04:01 0.474
field7784 40 00:01:54 00:03:55 0.485
field7785 40 00:01:54 00:08:07 0.234
FLAT_test OY 4 00:00:11 00:00:59 0.193
FLAT OY 172 00:08:11 00:15:42 0.522










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 83:03:52 147:59:20 0.561

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 1897:58:10 945:14:50 952:43:20 266:45:44 228:39:12 228:39:12 228:39:12 09:03:21
Observed 83:03:52
(4.38%)		 00:00:00
(0.00%)		 83:03:52
(8.72%)		 01:56:14
(0.73%)		 20:20:45
(8.90%)		 58:50:38
(25.74%)		 01:56:14
(0.85%)		 09:03:21
(N/A)
Remaining 1814:54:18
(95.62%)		 945:14:50
(100.00%)		 869:39:27
(91.28%)		 264:49:29
(99.27%)		 208:18:26
(91.10%)		 169:48:33
(74.26%)		 226:42:57
(99.15%)		 00:00:00
(N/A)











Camera status (2025/01/18)



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