PRIME Observation Log 2025/08/26

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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: 2025/08/26
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.07943 +- 0.09528 K
ImageAcquisitionErrors occurred 7 times @
2025-08-27 02:13:57 SAT
2025-08-27 02:19:44 SAT
2025-08-27 02:30:28 SAT
2025-08-27 02:35:15 SAT
2025-08-27 02:45:11 SAT
2025-08-27 02:49:49 SAT
2025-08-27 03:01:53 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:38:51
Morning 06:37:28
Science Observation
(Sun altitude < -10°)
Start 19:00:20
End 06:16:01
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:00:20
End 01:47:27


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:31:49 11:15:40 1.024
GB Time 06:36:51 06:47:06 0.975
Non-GB Time 04:54:58 04:28:33 1.098


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 280 00:13:20 00:25:59 0.513
GB 3752 02:58:50 06:36:51 0.451
SAAO 1545 01:13:38 02:45:25 0.445
OU 405 00:19:18 00:43:10 0.447
NASA 405 00:19:18 00:43:10 0.447
ABC 405 00:19:18 00:43:10 0.447


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 280 00:13:20 00:25:59 0.513
Bulge 3680 02:55:24 06:28:58 0.451
SKY 72 00:03:25 00:07:53 0.435
ToO 225 00:10:43 00:33:23 0.321
all_sky_grid 2535 02:00:50 04:21:34 0.462


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 280 00:13:20 00:25:59 0.513
GB76_test OH 32 00:01:31 00:09:28 0.161
GB76_dither OH 360 00:17:09 00:36:50 0.466
GB77_dither OH 360 00:17:09 00:36:31 0.470
GB78_dither OH 360 00:17:09 00:37:34 0.457
GB94_dither OH 360 00:17:09 00:36:42 0.467
GB111_dither OH 360 00:17:09 00:36:51 0.466
GB110_dither OH 360 00:17:09 00:36:59 0.464
GB109_dither OH 192 00:09:09 00:21:07 0.433
GB92_dither OH 96 00:04:34 00:09:53 0.463
GB93_dither OH 96 00:04:34 00:10:32 0.434
GB75_dither OH 168 00:08:00 00:16:56 0.473
GB112_dither OH 168 00:08:00 00:17:46 0.450
GB73_dither OH 24 00:01:08 00:02:35 0.440
GB90_dither OH 24 00:01:08 00:02:38 0.432
GB107_dither OH 24 00:01:08 00:02:21 0.483
GB106_dither OH 24 00:01:08 00:02:35 0.440
GB89_dither OH 24 00:01:08 00:02:33 0.448
GB72_dither OH 24 00:01:08 00:02:18 0.494
GB71_dither OH 24 00:01:08 00:02:44 0.417
GB88_dither OH 24 00:01:08 00:02:27 0.465
GB105_dither OH 24 00:01:08 00:03:51 0.296
GB79_dither OH 168 00:08:00 00:18:00 0.445
GB60_dither OH 72 00:03:25 00:07:33 0.454
GB95_dither OH 72 00:03:25 00:07:20 0.468
GB113_dither OH 72 00:03:25 00:07:31 0.456
GCsky 72 00:03:25 00:07:53 0.435
GB108_dither OH 24 00:01:08 00:02:44 0.418
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:33 0.448
GB114_dither OH 24 00:01:08 00:02:16 0.503
GB97_dither OH 24 00:01:08 00:02:18 0.494
GB96_dither OH 24 00:01:08 00:02:39 0.431
GB80_dither OH 24 00:01:08 00:02:19 0.493
field1811_test 55 00:02:37 00:12:21 0.212
field1811 150 00:07:09 00:17:03 0.419
field1811_tset 20 00:00:57 00:03:59 0.239
field2969_test 24 00:01:08 00:12:06 0.095
field2969 684 00:32:36 00:54:25 0.599
field1297_test 16 00:00:45 00:03:11 0.239
field1297 40 00:01:54 00:04:09 0.458
field1298 40 00:01:54 00:04:04 0.469
field1299 40 00:01:54 00:04:01 0.474
field1300 40 00:01:54 00:03:52 0.491
field1301 40 00:01:54 00:03:52 0.491
field1302 40 00:01:54 00:04:12 0.453
field1303 40 00:01:54 00:04:15 0.448
field1304 40 00:01:54 00:05:02 0.378
field1305 40 00:01:54 00:04:10 0.457
field1306 40 00:01:54 00:04:04 0.469
field1436 40 00:01:54 00:04:01 0.474
field1437 40 00:01:54 00:04:20 0.440
field1694 40 00:01:54 00:03:59 0.478
field1695 40 00:01:54 00:04:12 0.453
field1696 40 00:01:54 00:04:12 0.453
field1697 40 00:01:54 00:03:50 0.497
field1698 40 00:01:54 00:04:09 0.458
field1838 40 00:01:54 00:03:55 0.485
field1839 40 00:01:54 00:04:00 0.476
field1840 40 00:01:54 00:04:04 0.467
field1841 40 00:01:54 00:04:06 0.463
field1842 40 00:01:54 00:03:49 0.499
field1843 40 00:01:54 00:04:04 0.467
field1844 40 00:01:54 00:04:09 0.458
field1845 40 00:01:54 00:04:12 0.453
field1846 40 00:01:54 00:03:55 0.485
field1847 40 00:01:54 00:04:01 0.474
field1848 40 00:01:54 00:04:18 0.443
field1849 40 00:01:54 00:03:52 0.491
field1853 40 00:01:54 00:04:01 0.474
field1854 40 00:01:54 00:04:18 0.443
field1855 40 00:01:54 00:04:09 0.458
field1856 40 00:01:54 00:03:58 0.480
field1857 40 00:01:54 00:06:48 0.280
field997_test 36 00:01:42 00:09:56 0.172
field997 171 00:08:09 00:12:22 0.659
field1858_test 4 00:00:11 00:01:46 0.107
field1858 40 00:01:54 00:03:51 0.493
field1859 40 00:01:54 00:04:10 0.456
field1860 40 00:01:54 00:04:04 0.469
field1861 40 00:01:54 00:03:55 0.485
field1862 40 00:01:54 00:04:00 0.475
field1863 40 00:01:54 00:05:23 0.354










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 186:01:41 301:30:06 0.617

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 1932:09:30 1004:07:27 928:02:02 259:50:58 222:43:41 222:43:41 222:43:41 178:02:54
Observed 1342:33:33
(69.48%)		 856:49:37
(85.33%)		 485:43:56
(52.34%)		 107:38:58
(41.43%)		 108:46:42
(48.84%)		 195:52:44
(87.95%)		 73:25:30
(32.97%)		 178:02:54
(N/A)
Remaining 589:35:56
(30.52%)		 147:17:49
(14.67%)		 442:18:06
(47.66%)		 152:11:59
(58.57%)		 113:56:59
(51.16%)		 26:50:56
(12.05%)		 149:18:10
(67.03%)		 00:00:00
(N/A)











Camera status (2025/08/26)



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