PRIME Observation Log 2025/08/16

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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: 2025/08/16
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00004 +- 0.00214 K
ImageAcquisitionErrors occurred 6 times @
2025-08-16 19:05:55 SAT
2025-08-17 02:13:02 SAT
2025-08-17 02:17:48 SAT
2025-08-17 02:20:28 SAT
2025-08-17 02:24:48 SAT
2025-08-17 02:33:25 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:32:48
Morning 06:48:34
Science Observation
(Sun altitude < -10°)
Start 18:54:32
End 06:26:53
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:54:32
End 02:26:46


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:03:20 11:32:20 0.958
GB Time 06:44:24 07:32:13 0.894
Non-GB Time 04:18:55 04:00:06 1.078


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 572 00:27:15 01:00:40 0.449
GB 3756 02:59:02 06:44:24 0.443
SAAO 1882 01:29:42 02:27:13 0.609
OU 365 00:17:23 00:37:13 0.467
NASA 365 00:17:23 00:37:13 0.467
ABC 365 00:17:23 00:37:13 0.467


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 572 00:27:15 01:00:40 0.449
Bulge 3684 02:55:36 06:36:05 0.443
SKY 72 00:03:25 00:08:19 0.412
all_sky_grid 2977 02:21:54 04:18:55 0.548


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OJ 12 00:00:34 00:10:23 0.055
FLAT OJ 560 00:26:41 00:50:17 0.531
GB76_test OH 24 00:01:08 00:07:10 0.159
GB76_dither OH 360 00:17:09 00:37:38 0.456
GB77_dither OH 360 00:17:09 00:37:27 0.458
GB78_dither OH 360 00:17:09 00:37:43 0.455
GB94_dither OH 336 00:16:00 00:37:03 0.432
GB111_dither OH 336 00:16:00 00:35:10 0.455
GB110_dither OH 336 00:16:00 00:35:08 0.456
GB109_dither OH 168 00:08:00 00:17:07 0.468
GB92_dither OH 96 00:04:34 00:09:35 0.477
GB93_dither OH 96 00:04:34 00:09:45 0.469
GB75_dither OH 168 00:08:00 00:16:41 0.480
GB112_dither OH 192 00:09:09 00:20:16 0.451
GB79_dither OH 204 00:09:43 00:23:29 0.414
GB60_dither OH 96 00:04:34 00:09:47 0.467
GB95_dither OH 72 00:03:25 00:07:02 0.487
GB113_dither OH 96 00:04:34 00:10:49 0.423
GB107_dither OH 24 00:01:08 00:06:31 0.175
GB106_dither OH 24 00:01:08 00:02:19 0.493
GB105_dither OH 24 00:01:08 00:02:33 0.448
GB88_dither OH 24 00:01:08 00:02:19 0.493
GB89_dither OH 24 00:01:08 00:02:19 0.493
GB90_dither OH 24 00:01:08 00:02:38 0.432
GB73_dither OH 24 00:01:08 00:03:15 0.352
GB72_dither OH 24 00:01:08 00:02:21 0.484
GB71_dither OH 24 00:01:08 00:02:24 0.474
GCsky 72 00:03:25 00:08:19 0.412
GB108_dither OH 24 00:01:08 00:02:24 0.475
GB91_dither OH 24 00:01:08 00:02:25 0.473
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:27 0.464
GB97_dither OH 24 00:01:08 00:02:30 0.456
GB96_dither OH 24 00:01:08 00:02:32 0.450
GB80_dither OH 24 00:01:08 00:02:42 0.423
field2271_test 35 00:01:40 00:05:58 0.279
field2271 855 00:40:45 01:06:57 0.609
field2969 627 00:29:53 00:37:03 0.807
field8129_test 4 00:00:11 00:00:56 0.203
field8129 40 00:01:54 00:03:58 0.480
field10135 40 00:01:54 00:05:11 0.367
field24189 40 00:01:54 00:03:47 0.503
field24190 40 00:01:54 00:03:52 0.491
field24191 40 00:01:54 00:03:52 0.491
field24192 40 00:01:54 00:04:20 0.438
field9325 40 00:01:54 00:04:15 0.448
field24193 40 00:01:54 00:03:47 0.503
field24194 40 00:01:54 00:03:50 0.497
field24195 40 00:01:54 00:04:12 0.453
field11706 40 00:01:54 00:04:12 0.453
field24196 40 00:01:54 00:03:47 0.503
field24197 40 00:01:54 00:03:50 0.497
field24198 40 00:01:54 00:04:15 0.448
field9914 40 00:01:54 00:04:20 0.438
field23931 40 00:01:54 00:03:52 0.491
field23934 40 00:01:54 00:03:55 0.485
field24199 40 00:01:54 00:03:52 0.491
field24200 40 00:01:54 00:03:50 0.497
field24201 40 00:01:54 00:04:15 0.448
field9919 40 00:01:54 00:04:15 0.448
field22832 40 00:01:54 00:03:47 0.503
field22833 40 00:01:54 00:03:52 0.491
field23114 40 00:01:54 00:03:50 0.497
field23115 40 00:01:54 00:04:01 0.474
field23384 40 00:01:54 00:03:52 0.491
field23388 40 00:01:54 00:03:50 0.497
field23389 40 00:01:54 00:03:50 0.497
field23390 40 00:01:54 00:03:50 0.497
field23391 40 00:01:54 00:03:47 0.503
field23392 40 00:01:54 00:03:47 0.503
field23393 40 00:01:54 00:03:58 0.480
field23663 40 00:01:54 00:03:47 0.503
field23664 40 00:01:54 00:03:52 0.491
field23935 40 00:01:54 00:04:12 0.453
field22258_test 4 00:00:11 00:00:33 0.337
field22834_test 4 00:00:11 00:00:25 0.448
field23116_test 4 00:00:11 00:00:41 0.276
field1311_test 4 00:00:11 00:01:07 0.169
field1311 40 00:01:54 00:05:14 0.364










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 111:33:37 187:37:05 0.595

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 1914:37:57 996:00:50 918:37:07 257:12:47 220:28:06 220:28:06 220:28:06 172:59:51
Observed 1268:05:30
(66.23%)		 813:05:55
(81.64%)		 454:59:35
(49.53%)		 94:32:35
(36.76%)		 104:00:22
(47.18%)		 187:47:26
(85.18%)		 68:39:10
(31.14%)		 172:59:51
(N/A)
Remaining 646:32:27
(33.77%)		 182:54:54
(18.36%)		 463:37:32
(50.47%)		 162:40:12
(63.24%)		 116:27:44
(52.82%)		 32:40:39
(14.82%)		 151:48:55
(68.86%)		 00:00:00
(N/A)











Camera status (2025/08/16)



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