PRIME Observation Log 2025/09/02

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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: 2025/09/02
Local observer: Asahi
Remote observer:
Weather: cloudy, clear
Comment:
Detector Temperature: 113.99999 +- 0.00136 K
ImageAcquisitionErrors occurred 3 times @
2025-09-02 19:02:34 SAT
2025-09-03 03:04:29 SAT
2025-09-03 05:52:07 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:43:02
Morning 06:28:57
Science Observation
(Sun altitude < -10°)
Start 19:04:25
End 06:07:36
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:04:25
End 01:19:55


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:33:02 11:03:10 1.045
GB Time 06:08:40 06:15:30 0.982
Non-GB Time 05:24:22 04:47:40 1.128


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 3364 02:40:21 06:08:40 0.435
SAAO 1214 00:57:52 02:00:13 0.481
CALIB 160 00:07:37 00:13:55 0.548
OU 650 00:30:59 01:08:02 0.455
NASA 650 00:30:59 01:08:02 0.455
ABC 650 00:30:59 01:08:02 0.455


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 3292 02:36:55 06:00:10 0.436
SKY 72 00:03:25 00:08:29 0.404
all_sky_grid 3164 02:30:49 05:24:22 0.465
TWILIGHT 160 00:07:37 00:13:55 0.548


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_test OH 40 00:01:54 00:17:03 0.112
GB76_dither OH 348 00:16:35 00:36:02 0.460
GB77_dither OH 336 00:16:00 00:34:31 0.464
GB78_dither OH 336 00:16:00 00:34:42 0.461
GB94_dither OH 336 00:16:00 00:36:24 0.440
GB111_dither OH 336 00:16:00 00:34:51 0.459
GB110_dither OH 336 00:16:00 00:35:10 0.455
GB109_dither OH 168 00:08:00 00:17:24 0.460
GB108_dither OH 24 00:01:08 00:02:27 0.465
GB91_dither OH 24 00:01:08 00:02:24 0.474
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB92_dither OH 96 00:04:34 00:10:42 0.427
GB93_dither OH 96 00:04:34 00:10:12 0.448
GB75_dither OH 168 00:08:00 00:19:11 0.417
GB79_dither OH 144 00:06:51 00:16:01 0.428
GB112_dither OH 168 00:08:00 00:18:06 0.442
GB60_dither OH 72 00:03:25 00:07:08 0.480
GB95_dither OH 72 00:03:25 00:07:18 0.469
GB113_dither OH 72 00:03:25 00:07:44 0.443
GB114_dither OH 24 00:01:08 00:02:44 0.418
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:24 0.475
GB80_dither OH 24 00:01:08 00:02:50 0.403
GCsky 72 00:03:25 00:08:29 0.404
field2105_test 4 00:00:11 00:01:21 0.140
field3744_test 28 00:01:20 00:07:05 0.188
field3744 532 00:25:21 00:43:43 0.580
field13502 40 00:01:54 00:04:32 0.419
field13503 40 00:01:54 00:03:50 0.497
field13504 40 00:01:54 00:03:47 0.503
field13505 40 00:01:54 00:03:58 0.480
field13506 40 00:01:54 00:04:29 0.425
field13507 40 00:01:54 00:04:20 0.440
field13508 40 00:01:54 00:04:32 0.420
field13509 40 00:01:54 00:04:10 0.457
field13510 40 00:01:54 00:03:47 0.503
field13511 40 00:01:54 00:04:09 0.458
field13512 40 00:01:54 00:03:52 0.491
field13514 40 00:01:54 00:03:50 0.497
field13515 40 00:01:54 00:04:04 0.469
field10156 40 00:01:54 00:03:58 0.480
field10157 40 00:01:54 00:03:58 0.480
field10158 40 00:01:54 00:04:15 0.448
field10159 40 00:01:54 00:03:47 0.503
field10160 40 00:01:54 00:03:47 0.503
field10161 40 00:01:54 00:03:50 0.497
field10162 40 00:01:54 00:08:36 0.222
field10163 40 00:01:54 00:04:34 0.416
field10195 40 00:01:54 00:04:30 0.422
field10476 40 00:01:54 00:04:43 0.403
field10492 40 00:01:54 00:04:10 0.457
field10493 40 00:01:54 00:03:52 0.491
field10494 40 00:01:54 00:03:50 0.497
field10495 40 00:01:54 00:03:50 0.497
field10496 40 00:01:54 00:03:54 0.487
field10497 40 00:01:54 00:04:27 0.428
field10498 40 00:01:54 00:03:51 0.493
field10499 40 00:01:54 00:04:07 0.462
field10500 40 00:01:54 00:03:52 0.491
field10501 40 00:01:54 00:04:01 0.474
field10502 40 00:01:54 00:03:52 0.491
field10503 40 00:01:54 00:03:55 0.485
field10504 40 00:01:54 00:03:55 0.486
field10505 40 00:01:54 00:04:18 0.443
field10506 40 00:01:54 00:04:09 0.458
field10507 40 00:01:54 00:04:26 0.429
field10508 40 00:01:54 00:03:55 0.485
field10509 40 00:01:54 00:03:52 0.491
field10510 40 00:01:54 00:03:52 0.491
field10511 40 00:01:54 00:03:52 0.491
field10512 40 00:01:54 00:03:55 0.485
field10513 40 00:01:54 00:03:52 0.491
field10514 40 00:01:54 00:04:23 0.434
field10515 40 00:01:54 00:03:57 0.482
field10516 40 00:01:54 00:04:02 0.472
field10517 40 00:01:54 00:03:52 0.491
field10518 40 00:01:54 00:04:23 0.434
field11400 40 00:01:54 00:04:08 0.460
field11401 40 00:01:54 00:04:10 0.456
field11402 40 00:01:54 00:04:06 0.463
field11403 40 00:01:54 00:04:15 0.448
field11404 40 00:01:54 00:04:15 0.448
field11405 40 00:01:54 00:04:23 0.434
field11406 40 00:01:54 00:03:50 0.497
field11407 40 00:01:54 00:03:52 0.491
field11408 40 00:01:54 00:03:50 0.497
field11409 40 00:01:54 00:06:03 0.314
field11411 40 00:01:54 00:04:21 0.437
field11412 40 00:01:54 00:04:04 0.469
field11413 40 00:01:54 00:03:47 0.503
field11414 40 00:01:54 00:03:50 0.497
field11415 40 00:01:54 00:05:02 0.378
FLAT OJ 160 00:07:37 00:13:55 0.548










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 23:00:11 22:08:11 1.039

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 1960:27:13 1018:40:47 941:46:26 263:41:48 226:01:32 226:01:32 226:01:32 181:02:36
Observed 1409:51:20
(71.91%)		 894:04:39
(87.77%)		 515:46:41
(54.77%)		 119:43:38
(45.40%)		 114:46:03
(50.78%)		 201:52:06
(89.31%)		 79:24:52
(35.14%)		 181:02:36
(N/A)
Remaining 550:35:53
(28.09%)		 124:36:08
(12.23%)		 425:59:44
(45.23%)		 143:58:09
(54.60%)		 111:15:28
(49.22%)		 24:09:26
(10.69%)		 146:36:39
(64.86%)		 00:00:00
(N/A)











Camera status (2025/09/02)



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