PRIME Observation Log 2025/09/13

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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: 2025/09/13
Local observer: None
Remote observer: Kansuke, Takuto
Weather: Clear
Comment:
Detector Temperature: 115.99993 +- 0.00178 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:49:40
Morning 06:14:43
Science Observation
(Sun altitude < -10°)
Start 19:11:00
End 05:53:25
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:11:00
End 00:36:40


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:49:31 10:42:25 1.011
GB Time 05:22:24 05:25:40 0.990
Non-GB Time 05:27:07 05:16:45 1.033


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 340 00:16:12 00:37:05 0.437
GB 2988 02:22:25 05:22:24 0.442
SAAO 884 00:42:08 01:53:19 0.372
OU 674 00:32:07 01:11:16 0.451
NASA 674 00:32:07 01:11:16 0.451
ABC 674 00:32:07 01:11:16 0.451


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 340 00:16:12 00:37:05 0.437
Bulge 2892 02:17:51 05:11:31 0.443
SKY 96 00:04:34 00:10:53 0.420
all_sky_grid 2696 02:08:30 04:45:04 0.451
ToO 210 00:10:00 00:42:03 0.238


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 336 00:16:00 00:32:30 0.493
GB76_test OH 8 00:00:22 00:02:50 0.134
GCsky 96 00:04:34 00:10:53 0.420
GB76_dither OH 216 00:10:17 00:22:09 0.465
GB77_dither OH 216 00:10:17 00:22:20 0.461
GB78_dither OH 216 00:10:17 00:21:37 0.476
GB94_dither OH 216 00:10:17 00:21:56 0.469
GB111_dither OH 216 00:10:17 00:22:09 0.465
GB110_dither OH 264 00:12:35 00:26:48 0.469
GB109_dither OH 120 00:05:43 00:12:40 0.452
GB108_dither OH 24 00:01:08 00:02:41 0.424
GB91_dither OH 24 00:01:08 00:02:31 0.454
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB92_dither OH 72 00:03:25 00:07:21 0.466
GB93_dither OH 72 00:03:25 00:07:36 0.451
GB75_dither OH 120 00:05:43 00:12:55 0.443
GB112_dither OH 120 00:05:43 00:23:56 0.239
GB79_dither OH 96 00:04:34 00:11:01 0.415
GB60_dither OH 48 00:02:17 00:05:03 0.452
GB95_dither OH 48 00:02:17 00:04:46 0.479
GB113_dither OH 48 00:02:17 00:04:38 0.493
GB114_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:30 0.456
GB96_dither OH 24 00:01:08 00:02:16 0.503
GB80_dither OH 24 00:01:08 00:02:20 0.487
GB78_test OJ 4 00:00:11 00:01:25 0.134
GB78_dither OJ 48 00:02:17 00:04:57 0.461
GB95_dither OJ 48 00:02:17 00:04:49 0.474
GB112_dither OJ 48 00:02:17 00:05:06 0.448
GB79_dither OJ 48 00:02:17 00:04:43 0.484
GB96_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:52 0.470
GB80_dither OJ 48 00:02:17 00:04:34 0.500
GB97_dither OJ 48 00:02:17 00:05:04 0.451
GB114_dither OJ 48 00:02:17 00:04:43 0.484
GB74_dither OJ 48 00:02:17 00:04:43 0.484
GB91_dither OJ 48 00:02:17 00:04:43 0.484
GB108_dither OJ 48 00:02:17 00:05:00 0.456
GB60_dither OJ 48 00:02:17 00:05:11 0.440
field3740_test 12 00:00:34 00:04:07 0.139
field3740 40 00:01:54 00:03:51 0.493
field3741 40 00:01:54 00:04:04 0.469
field3949 40 00:01:54 00:04:13 0.452
field3950 40 00:01:54 00:04:18 0.443
field4160 40 00:01:54 00:03:47 0.503
field4161 40 00:01:54 00:04:18 0.443
field4379 40 00:01:54 00:03:58 0.480
field4380 40 00:01:54 00:03:55 0.485
field4381 40 00:01:54 00:04:12 0.453
field4382 40 00:01:54 00:04:15 0.448
field4383 40 00:01:54 00:04:06 0.463
field4602 40 00:01:54 00:03:57 0.482
field4828 36 00:01:42 00:04:02 0.425
field4829 40 00:01:54 00:03:51 0.494
field4830 40 00:01:54 00:05:15 0.363
field1811_test 60 00:02:51 00:21:29 0.133
field1811 150 00:07:09 00:20:33 0.348
field9289_test 12 00:00:34 00:05:18 0.108
field9289 40 00:01:54 00:03:51 0.493
field9290 40 00:01:54 00:04:07 0.462
field9291 40 00:01:54 00:03:50 0.497
field9292 40 00:01:54 00:03:50 0.497
field9293 40 00:01:54 00:03:52 0.491
field9294 40 00:01:54 00:03:50 0.497
field9295 40 00:01:54 00:04:06 0.463
field9296 40 00:01:54 00:03:58 0.480
field9297 40 00:01:54 00:04:00 0.476
field9298 40 00:01:54 00:04:13 0.451
field9299 40 00:01:54 00:03:55 0.485
field9300 40 00:01:54 00:04:01 0.474
field9301 40 00:01:54 00:04:04 0.469
field9302 40 00:01:54 00:03:58 0.480
field9303 40 00:01:54 00:04:09 0.458
field9304 40 00:01:54 00:04:04 0.469
field9305 40 00:01:54 00:03:52 0.491
field9306 40 00:01:54 00:03:55 0.485
field9307 40 00:01:54 00:03:50 0.497
field9308 40 00:01:54 00:04:04 0.469
field9309 40 00:01:54 00:04:01 0.474
field9310 36 00:01:42 00:03:58 0.432
field9311 40 00:01:54 00:04:09 0.458
field9312 40 00:01:54 00:04:06 0.463
field9313 40 00:01:54 00:03:50 0.497
field9314 40 00:01:54 00:03:52 0.491
field9315 40 00:01:54 00:03:50 0.497
field9316 40 00:01:54 00:03:50 0.497
field9317 40 00:01:54 00:03:50 0.497
field9318 40 00:01:54 00:03:52 0.491
field9319 40 00:01:54 00:04:00 0.477
field9320 40 00:01:54 00:05:08 0.371
field9321 40 00:01:54 00:04:02 0.471
field9322 40 00:01:54 00:03:50 0.497
field9323 40 00:01:54 00:03:52 0.491
field9324 40 00:01:54 00:03:50 0.497
field9325 40 00:01:54 00:04:06 0.463
field9326 40 00:01:54 00:04:09 0.458
field9327 40 00:01:54 00:03:52 0.491
field9328 40 00:01:54 00:03:52 0.491
field9329 40 00:01:54 00:03:52 0.491
field9330 40 00:01:54 00:03:58 0.480
field9331 40 00:01:54 00:04:04 0.469
field9332 40 00:01:54 00:03:55 0.485
field9333 40 00:01:54 00:04:01 0.474
field9334 40 00:01:54 00:04:15 0.448
field9335 40 00:01:54 00:03:52 0.491
field9336 40 00:01:54 00:03:52 0.491
field9337 40 00:01:54 00:03:52 0.491
field9338 40 00:01:54 00:04:12 0.453
field9339 40 00:01:54 00:03:58 0.480
field9340 40 00:01:54 00:09:45 0.195
FLAT_test OJ 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 101:26:39 141:39:49 0.716

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 1979:07:53 1028:29:07 950:38:45 266:10:51 228:09:18 228:09:18 228:09:18 184:56:09
Observed 1488:17:48
(75.20%)		 935:48:54
(90.99%)		 552:28:54
(58.12%)		 131:36:22
(49.44%)		 123:02:33
(53.93%)		 210:08:35
(92.11%)		 87:41:22
(38.43%)		 184:56:09
(N/A)
Remaining 490:50:04
(24.80%)		 92:40:12
(9.01%)		 398:09:51
(41.88%)		 134:34:28
(50.56%)		 105:06:44
(46.07%)		 18:00:42
(7.89%)		 140:27:56
(61.57%)		 00:00:00
(N/A)











Camera status (2025/09/13)



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