PRIME Observation Log 2025/09/25

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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: 2025/09/25
Local observer:
Remote observer: Togo, Asahi
Weather: clear
Comment:
Detector Temperature: 116.00007 +- 0.00134 K
ImageAcquisitionErrors occurred 4 times @
2025-09-25 20:42:04 SAT
2025-09-26 02:59:11 SAT
2025-09-26 03:50:02 SAT
2025-09-26 03:53:05 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:57:15
Morning 05:58:40
Science Observation
(Sun altitude < -10°)
Start 19:18:43
End 05:37:14
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:18:43
End 23:49:29


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:28:47 10:18:30 1.017
GB Time 04:18:35 04:30:46 0.955
Non-GB Time 06:10:11 05:47:44 1.065


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 320 00:15:15 00:29:54 0.510
GB 2292 01:49:15 04:18:35 0.422
SAAO 844 00:40:13 01:32:32 0.435
OU 844 00:40:13 01:32:32 0.435
NASA 844 00:40:13 01:32:32 0.435
ABC 844 00:40:13 01:32:32 0.435


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 320 00:15:15 00:29:54 0.510
Bulge 2268 01:48:06 04:16:08 0.422
SKY 24 00:01:08 00:02:27 0.465
all_sky_grid 3376 02:40:55 06:10:11 0.435


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 320 00:15:15 00:29:54 0.510
GB76_test OH 16 00:00:45 00:06:53 0.111
GB76_dither OH 216 00:10:17 00:23:16 0.442
GB77_dither OH 216 00:10:17 00:22:40 0.454
GB78_dither OH 216 00:10:17 00:22:52 0.450
GB94_dither OH 240 00:11:26 00:26:03 0.439
GB111_dither OH 240 00:11:26 00:24:14 0.472
GB110_dither OH 240 00:11:26 00:25:37 0.447
GB109_dither OH 120 00:05:43 00:11:55 0.480
GB92_dither OH 72 00:03:25 00:07:19 0.468
GB93_dither OH 72 00:03:25 00:07:50 0.437
GB75_dither OH 96 00:04:34 00:09:53 0.463
GB112_dither OH 120 00:05:43 00:12:18 0.465
GB79_dither OH 76 00:03:37 00:12:03 0.301
GB60_dither OH 48 00:02:17 00:05:14 0.436
GB95_dither OH 56 00:02:40 00:11:43 0.228
GB95_test OH 8 00:00:22 00:02:57 0.129
GB113_dither OH 48 00:02:17 00:04:55 0.465
GB114_dither OH 24 00:01:08 00:02:35 0.440
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:35 0.440
GB80_dither OH 24 00:01:08 00:03:15 0.352
GCsky 24 00:01:08 00:02:27 0.465
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:39 0.431
GB74_dither OH 24 00:01:08 00:02:32 0.450
field5532_test 16 00:00:45 00:05:43 0.133
field5532 40 00:01:54 00:04:09 0.458
field6272 40 00:01:54 00:04:12 0.453
field6526 40 00:01:54 00:04:43 0.404
field7580 40 00:01:54 00:04:09 0.458
field8127 40 00:01:54 00:04:37 0.412
field8128 40 00:01:54 00:04:18 0.443
field11030 40 00:01:54 00:03:52 0.491
field11941 40 00:01:54 00:04:06 0.463
field7884 40 00:01:54 00:04:01 0.474
field7883 40 00:01:54 00:04:06 0.463
field7882 40 00:01:54 00:03:52 0.491
field7617 40 00:01:54 00:03:47 0.503
field7618 40 00:01:54 00:04:40 0.408
field7616 40 00:01:54 00:04:06 0.463
field7615 40 00:01:54 00:03:50 0.497
field7614 40 00:01:54 00:04:09 0.458
field7352 40 00:01:54 00:04:23 0.434
field7353 40 00:01:54 00:03:50 0.497
field7354 40 00:01:54 00:03:50 0.497
field7355 40 00:01:54 00:04:09 0.458
field7351 40 00:01:54 00:04:13 0.452
field7350 40 00:01:54 00:04:53 0.389
field7356 40 00:01:54 00:04:23 0.434
field7357 40 00:01:54 00:04:10 0.457
field7358 40 00:01:54 00:04:23 0.435
field7359 40 00:01:54 00:04:34 0.417
field7095 40 00:01:54 00:04:04 0.469
field7096 40 00:01:54 00:04:04 0.469
field7097 40 00:01:54 00:04:38 0.411
field7098 40 00:01:54 00:04:51 0.393
field7099 40 00:01:54 00:04:20 0.438
field7100 40 00:01:54 00:03:53 0.490
field7360 40 00:01:54 00:04:09 0.458
field7361 40 00:01:54 00:04:17 0.444
field7362 40 00:01:54 00:04:23 0.434
field7363 40 00:01:54 00:03:50 0.497
field7364 40 00:01:54 00:04:34 0.416
field7365 40 00:01:54 00:03:50 0.497
field7366 40 00:01:54 00:04:07 0.463
field7367 40 00:01:54 00:04:15 0.448
field7368 40 00:01:54 00:04:06 0.463
field7369 40 00:01:54 00:04:20 0.438
field7370 40 00:01:54 00:04:07 0.463
field7371 40 00:01:54 00:04:14 0.449
field7372 40 00:01:54 00:04:23 0.434
field7373 40 00:01:54 00:08:47 0.217
field7374 40 00:01:54 00:03:53 0.490
field7375 40 00:01:54 00:04:06 0.463
field7376 40 00:01:54 00:04:00 0.475
field7377 40 00:01:54 00:04:04 0.469
field7378 40 00:01:54 00:04:04 0.469
field7379 40 00:01:54 00:04:35 0.416
field7380 40 00:01:54 00:04:03 0.469
field7381 40 00:01:54 00:03:50 0.497
field7382 40 00:01:54 00:04:04 0.469
field7383 40 00:01:54 00:03:53 0.491
field7384 40 00:01:54 00:04:32 0.420
field7385 40 00:01:54 00:09:23 0.203
field7386 40 00:01:54 00:04:20 0.438
field7387 40 00:01:54 00:04:04 0.469
field7388 40 00:01:54 00:04:23 0.434
field7389 40 00:01:54 00:04:04 0.469
field7390 40 00:01:54 00:04:04 0.469
field7391 40 00:01:54 00:04:18 0.443
field7392 40 00:01:54 00:04:18 0.443
field7393 40 00:01:54 00:04:34 0.416
field7394 40 00:01:54 00:04:18 0.443
field7395 40 00:01:54 00:04:29 0.425
field7396 40 00:01:54 00:03:50 0.497
field7397 40 00:01:54 00:04:15 0.448
field7664 40 00:01:54 00:04:18 0.443
field7665 40 00:01:54 00:04:23 0.434
field7666 40 00:01:54 00:04:06 0.463
field7667 40 00:01:54 00:04:20 0.439
field7668 40 00:01:54 00:04:18 0.443
field7669 40 00:01:54 00:03:55 0.485
field7671 40 00:01:54 00:04:20 0.439
field7672 40 00:01:54 00:03:52 0.491
field7673 40 00:01:54 00:03:50 0.497
field7674 40 00:01:54 00:04:23 0.434
field7675 40 00:01:54 00:04:09 0.458
field7676 40 00:01:54 00:03:55 0.485
field7677 40 00:01:54 00:03:52 0.491
field7678 40 00:01:54 00:06:07 0.311










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 163:12:38 267:34:41 0.610

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 1977:56:25 1032:29:40 945:26:44 264:43:29 226:54:25 226:54:25 226:54:25 190:45:04
Observed 1550:03:47
(78.37%)		 969:25:29
(93.89%)		 580:38:18
(61.41%)		 138:13:23
(52.21%)		 129:06:10
(56.90%)		 219:33:44
(96.76%)		 93:44:59
(41.32%)		 190:45:04
(N/A)
Remaining 427:52:38
(21.63%)		 63:04:11
(6.11%)		 364:48:26
(38.59%)		 126:30:05
(47.79%)		 97:48:14
(43.10%)		 07:20:40
(3.24%)		 133:09:25
(58.68%)		 00:00:00
(N/A)











Camera status (2025/09/25)



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