PRIME Observation Log 2025/08/19

Return to index
Previous day Next day

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: 2025/08/19
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99995 +- 0.00105 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:34:37
Morning 06:45:23
Science Observation
(Sun altitude < -10°)
Start 18:56:16
End 06:23:47
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:56:16
End 02:14:58


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:12:53 11:27:30 0.979
GB Time 06:38:11 07:18:41 0.908
Non-GB Time 04:34:42 04:08:48 1.104


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.)
GB 3952 03:08:22 06:38:11 0.473
SAAO 1003 00:47:48 02:01:16 0.394
CALIB 240 00:11:26 00:20:30 0.558
OU 513 00:24:27 00:51:08 0.478
NASA 513 00:24:27 00:51:08 0.478
ABC 513 00:24:27 00:51:08 0.478


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 3880 03:04:56 06:30:34 0.474
SKY 72 00:03:25 00:07:36 0.451
ToO 490 00:23:21 01:10:07 0.333
all_sky_grid 2052 01:37:48 03:24:35 0.478
TWILIGHT 240 00:11:26 00:20:30 0.558


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_test OH 16 00:00:45 00:09:16 0.082
GB76_dither OH 360 00:17:09 00:35:12 0.487
GB77_dither OH 360 00:17:09 00:35:18 0.486
GB78_dither OH 336 00:16:00 00:32:53 0.487
GB94_dither OH 336 00:16:00 00:32:50 0.488
GB111_dither OH 360 00:17:09 00:35:15 0.487
GB110_dither OH 360 00:17:09 00:35:18 0.486
GB109_dither OH 192 00:09:09 00:19:20 0.473
GB92_dither OH 96 00:04:34 00:09:25 0.486
GB93_dither OH 96 00:04:34 00:09:30 0.481
GB75_dither OH 192 00:09:09 00:18:50 0.486
GB112_dither OH 192 00:09:09 00:18:52 0.485
GB79_dither OH 168 00:08:00 00:17:21 0.461
GB107_dither OH 48 00:02:17 00:04:43 0.484
GB106_dither OH 48 00:02:17 00:04:38 0.493
GB105_dither OH 48 00:02:17 00:04:43 0.484
GB88_dither OH 48 00:02:17 00:04:38 0.493
GB89_dither OH 48 00:02:17 00:04:41 0.488
GB90_dither OH 48 00:02:17 00:05:42 0.400
GB73_dither OH 48 00:02:17 00:05:14 0.436
GB72_dither OH 24 00:01:08 00:02:21 0.484
GB71_dither OH 24 00:01:08 00:02:27 0.465
GB60_dither OH 96 00:04:34 00:09:33 0.479
GB95_dither OH 72 00:03:25 00:06:57 0.493
GB113_dither OH 96 00:04:34 00:09:13 0.496
GCsky 72 00:03:25 00:07:36 0.451
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB74_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:16 0.503
GB96_dither OH 24 00:01:08 00:02:16 0.503
GB80_dither OH 24 00:01:08 00:02:19 0.493
field1811_test 100 00:04:46 00:33:06 0.144
field1811 390 00:18:35 00:37:01 0.502
field14145_test 12 00:00:34 00:07:12 0.079
field14145 40 00:01:54 00:03:52 0.491
field14146 40 00:01:54 00:03:52 0.491
field14147 40 00:01:54 00:03:52 0.491
field14148 40 00:01:54 00:03:47 0.503
field14149 40 00:01:54 00:03:47 0.503
field14150 40 00:01:54 00:03:47 0.503
field14151 40 00:01:54 00:03:47 0.503
field14152 40 00:01:54 00:03:47 0.503
field14153 40 00:01:54 00:03:47 0.503
field14154 40 00:01:54 00:03:52 0.491
field14155 40 00:01:54 00:03:50 0.497
field14156 40 00:01:54 00:03:55 0.485
field14157 40 00:01:54 00:03:52 0.491
field14158 40 00:01:54 00:03:52 0.491
field14159 40 00:01:54 00:03:52 0.491
field14160 40 00:01:54 00:03:55 0.485
field14161 40 00:01:54 00:03:50 0.497
field14162 40 00:01:54 00:03:50 0.497
field14163 40 00:01:54 00:03:50 0.497
field14164 40 00:01:54 00:03:50 0.497
field14165 40 00:01:54 00:03:50 0.497
field14166 40 00:01:54 00:03:52 0.491
field14167 40 00:01:54 00:03:52 0.491
field14168 40 00:01:54 00:03:47 0.503
field14169 40 00:01:54 00:03:47 0.503
field14170 40 00:01:54 00:03:47 0.503
field14171 40 00:01:54 00:03:47 0.504
field14172 40 00:01:54 00:03:47 0.503
field14173 40 00:01:54 00:03:55 0.485
field14174 40 00:01:54 00:03:52 0.491
field14175 40 00:01:54 00:03:52 0.491
field14176 40 00:01:54 00:03:52 0.491
field14177 40 00:01:54 00:03:52 0.491
field14178 40 00:01:54 00:03:50 0.497
field14179 40 00:01:54 00:03:52 0.491
field14180 40 00:01:54 00:03:50 0.497
field14181 40 00:01:54 00:03:47 0.503
field14182 40 00:01:54 00:03:50 0.497
field14183 40 00:01:54 00:03:47 0.503
field14184 40 00:01:54 00:03:47 0.503
field14185 40 00:01:54 00:03:52 0.491
field14186 40 00:01:54 00:03:50 0.497
field14187 40 00:01:54 00:03:52 0.491
field14188 40 00:01:54 00:03:55 0.485
field14189 40 00:01:54 00:03:50 0.497
field14190 40 00:01:54 00:03:50 0.497
field14191 40 00:01:54 00:03:47 0.503
field14192 40 00:01:54 00:03:50 0.497
field14194 40 00:01:54 00:03:52 0.491
field14195 40 00:01:54 00:03:52 0.491
field14196 40 00:01:54 00:05:08 0.371
FLAT OJ 240 00:11:26 00:20:30 0.558










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 145:42:40 222:04:29 0.656

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 1931:33:17 1004:56:51 926:36:25 259:26:59 222:23:08 222:23:08 222:23:08 174:46:36
Observed 1302:14:32
(67.42%)		 833:06:46
(82.90%)		 469:07:46
(50.63%)		 100:50:52
(38.87%)		 106:37:00
(47.94%)		 190:24:04
(85.62%)		 71:15:49
(32.05%)		 174:46:36
(N/A)
Remaining 629:18:45
(32.58%)		 171:50:05
(17.10%)		 457:28:39
(49.37%)		 158:36:07
(61.13%)		 115:46:08
(52.06%)		 31:59:03
(14.38%)		 151:07:19
(67.95%)		 00:00:00
(N/A)











Camera status (2025/08/19)



Return to index
Previous day Next day