PRIME Observation Log 2025/09/03

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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: 2025/09/03
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00012 +- 0.00418 K
ImageAcquisitionErrors occurred 1 times @
2025-09-03 22:08:50 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:43:38
Morning 06:27:41
Science Observation
(Sun altitude < -10°)
Start 19:05:01
End 06:06:21
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:05:01
End 01:16:00


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:09:28 11:01:21 0.922
GB Time 04:39:01 06:10:59 0.752
Non-GB Time 05:30:27 04:50:21 1.138


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 00:28:46 0.464
GB 2368 01:52:52 04:39:01 0.405
SAAO 914 00:43:34 01:51:58 0.389
OU 674 00:32:07 01:12:49 0.441
NASA 674 00:32:07 01:12:49 0.441
ABC 674 00:32:07 01:12:49 0.441


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 280 00:13:20 00:28:46 0.464
Bulge 2304 01:49:49 04:26:50 0.412
SKY 64 00:03:03 00:12:10 0.250
ToO 240 00:11:26 00:39:09 0.292
all_sky_grid 2696 02:08:30 04:51:17 0.441


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 280 00:13:20 00:28:46 0.464
GB76_test OH 72 00:03:25 00:30:46 0.112
GB76_dither OH 96 00:04:34 00:09:36 0.476
GB77_dither OH 96 00:04:34 00:09:52 0.463
GB78_dither OH 96 00:04:34 00:10:34 0.433
GB94_dither OH 96 00:04:34 00:09:58 0.459
GB111_dither OH 96 00:04:34 00:10:13 0.448
GB110_dither OH 96 00:04:34 00:11:34 0.395
GB109_dither OH 48 00:02:17 00:04:49 0.474
GB108_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:41 0.425
GB92_dither OH 24 00:01:08 00:02:21 0.484
GB93_dither OH 24 00:01:08 00:02:33 0.448
GB75_dither OH 48 00:02:17 00:05:17 0.432
GB112_dither OH 48 00:02:17 00:04:41 0.488
GB79_dither OH 48 00:02:17 00:05:33 0.411
GB60_dither OH 24 00:01:08 00:02:39 0.431
GB95_dither OH 24 00:01:08 00:02:30 0.455
GB113_dither OH 24 00:01:08 00:02:30 0.456
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 00:02:32 0.450
GB80_dither OH 24 00:01:08 00:02:36 0.439
GCsky 48 00:02:17 00:08:44 0.261
GCsky_test 16 00:00:45 00:03:25 0.222
GB60_test OJ 24 00:01:08 00:04:50 0.236
GB60_dither OJ 48 00:02:17 00:04:52 0.470
GB80_dither OJ 48 00:02:17 00:04:57 0.461
GB79_dither OJ 48 00:02:17 00:04:49 0.474
GB78_dither OJ 48 00:02:17 00:05:00 0.457
GB77_dither OJ 48 00:02:17 00:04:47 0.478
GB76_dither OJ 48 00:02:17 00:05:00 0.456
GB75_dither OJ 48 00:02:17 00:04:57 0.461
GB74_dither OJ 48 00:02:17 00:04:54 0.466
GB97_dither OJ 48 00:02:17 00:04:55 0.465
GB96_dither OJ 48 00:02:17 00:04:46 0.479
GB95_dither OJ 48 00:02:17 00:04:43 0.484
GB94_dither OJ 48 00:02:17 00:04:43 0.484
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:05:03 0.453
GB91_dither OJ 48 00:02:17 00:05:01 0.456
GB114_dither OJ 48 00:02:17 00:04:43 0.484
GB113_dither OJ 48 00:02:17 00:04:46 0.479
GB112_dither OJ 48 00:02:17 00:05:00 0.456
GB111_dither OJ 48 00:02:17 00:04:46 0.479
GB110_dither OJ 48 00:02:17 00:04:41 0.488
GB109_dither OJ 48 00:02:17 00:05:09 0.444
GB108_dither OJ 48 00:02:17 00:04:57 0.461
GB73_dither OJ 48 00:02:17 00:04:52 0.470
GB72_dither OJ 48 00:02:17 00:06:47 0.337
field1811_test 90 00:04:17 00:22:26 0.191
field1811 150 00:07:09 00:16:43 0.428
field9289_test 36 00:01:42 00:06:35 0.261
field9289 40 00:01:54 00:04:03 0.470
field9290 40 00:01:54 00:04:10 0.457
field9291 40 00:01:54 00:03:50 0.497
field9292 40 00:01:54 00:04:00 0.475
field9293 40 00:01:54 00:04:01 0.473
field9294 40 00:01:54 00:04:15 0.448
field9295 40 00:01:54 00:04:26 0.429
field9296 36 00:01:42 00:04:01 0.427
field9297 40 00:01:54 00:04:01 0.474
field9298 40 00:01:54 00:04:04 0.469
field9299 40 00:01:54 00:04:12 0.453
field9300 40 00:01:54 00:04:12 0.453
field9301 40 00:01:54 00:04:06 0.463
field9302 40 00:01:54 00:04:03 0.470
field9303 40 00:01:54 00:04:10 0.457
field9304 40 00:01:54 00:03:52 0.491
field9305 40 00:01:54 00:04:09 0.459
field9306 40 00:01:54 00:04:10 0.457
field9307 40 00:01:54 00:03:52 0.491
field9308 40 00:01:54 00:04:01 0.474
field9309 40 00:01:54 00:04:06 0.464
field9310 40 00:01:54 00:04:04 0.468
field9311 40 00:01:54 00:04:04 0.469
field9312 40 00:01:54 00:04:12 0.453
field9313 40 00:01:54 00:04:01 0.474
field9314 40 00:01:54 00:04:04 0.469
field9315 40 00:01:54 00:04:04 0.469
field9316 40 00:01:54 00:03:52 0.491
field9317 40 00:01:54 00:03:50 0.497
field9318 40 00:01:54 00:03:52 0.493
field9319 40 00:01:54 00:04:01 0.473
field9320 40 00:01:54 00:04:04 0.469
field9321 40 00:01:54 00:04:15 0.448
field9322 40 00:01:54 00:04:01 0.474
field9323 40 00:01:54 00:04:09 0.458
field9324 40 00:01:54 00:04:12 0.453
field9327 40 00:01:54 00:04:09 0.458
field9328 40 00:01:54 00:04:01 0.474
field9329 40 00:01:54 00:03:52 0.491
field9330 40 00:01:54 00:03:52 0.491
field9331 40 00:01:54 00:03:50 0.497
field9332 40 00:01:54 00:04:01 0.474
field9333 40 00:01:54 00:04:01 0.474
field9334 40 00:01:54 00:04:04 0.469
field9335 40 00:01:54 00:04:09 0.458
field9336 40 00:01:54 00:04:12 0.453
field9337 40 00:01:54 00:04:01 0.474
field9338 40 00:01:54 00:03:55 0.485
field9339 40 00:01:54 00:04:26 0.429
field9340 40 00:01:54 00:04:03 0.470
field9341 40 00:01:54 00:04:13 0.452
field9342 40 00:01:54 00:04:01 0.474
field9343 40 00:01:54 00:04:12 0.453
field9344 40 00:01:54 00:04:03 0.470
field9345 40 00:01:54 00:04:10 0.457
field9346 40 00:01:54 00:04:25 0.431
field9347 40 00:01:54 00:04:41 0.406
field9351 40 00:01:54 00:04:37 0.412
field9352 40 00:01:54 00:04:37 0.412
field9353 40 00:01:54 00:04:28 0.426
field9354 64 00:03:03 00:14:30 0.210
field9355 40 00:01:54 00:04:06 0.463
field9356 40 00:01:54 00:03:55 0.485
field9357 40 00:01:54 00:04:12 0.453
field9358 40 00:01:54 00:04:09 0.458
field9359 40 00:01:54 00:06:49 0.279










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 33:09:39 33:09:32 1.000

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 1965:06:01 1020:14:19 944:51:41 264:33:40 226:46:00 226:46:00 226:46:00 181:31:22
Observed 1420:00:48
(72.26%)		 898:43:40
(88.09%)		 521:17:08
(55.17%)		 121:35:37
(45.96%)		 115:58:53
(51.15%)		 203:04:55
(89.56%)		 80:37:42
(35.56%)		 181:31:22
(N/A)
Remaining 545:05:12
(27.74%)		 121:30:39
(11.91%)		 423:34:33
(44.83%)		 142:58:03
(54.04%)		 110:47:07
(48.85%)		 23:41:04
(10.44%)		 146:08:18
(64.44%)		 00:00:00
(N/A)











Camera status (2025/09/03)



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