PRIME Observation Log 2025/05/04

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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: 2025/05/04
Local observer: Seiya Nakayama
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00001 +- 0.00085 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:18:24
Morning 06:48:55
Science Observation
(Sun altitude < -10°)
Start 18:40:23
End 06:26:53
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 21:46:22
End 06:26:53


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:44:10 11:46:30 0.997
GB Time 08:37:33 08:40:31 0.994
Non-GB Time 03:06:37 03:05:59 1.003


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 592 00:28:13 00:54:06 0.521
GB 5220 04:08:49 08:37:33 0.481
SAAO 472 00:22:29 00:46:39 0.482
OU 472 00:22:29 00:46:39 0.482
NASA 472 00:22:29 00:46:39 0.482
ABC 472 00:22:29 00:46:39 0.482


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 592 00:28:13 00:54:06 0.521
all_sky_grid 1888 01:29:59 03:06:37 0.482
Bulge 5124 04:04:14 08:26:18 0.482
SKY 96 00:04:34 00:11:14 0.407


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 4 00:00:11 00:00:41 0.276
FLAT_test OJ 12 00:00:34 00:03:36 0.158
FLAT OJ 576 00:27:27 00:49:48 0.551
field13361_test 48 00:02:17 00:07:12 0.317
field13361 40 00:01:54 00:05:14 0.364
field13362 40 00:01:54 00:03:50 0.497
field13363 40 00:01:54 00:03:52 0.491
field13364 40 00:01:54 00:03:52 0.491
field13365 40 00:01:54 00:03:50 0.497
field13366 40 00:01:54 00:03:50 0.497
field13367 40 00:01:54 00:03:52 0.491
field13368 40 00:01:54 00:03:50 0.497
field13369 40 00:01:54 00:03:47 0.503
field13370 40 00:01:54 00:03:47 0.503
field13371 40 00:01:54 00:03:47 0.503
field13372 40 00:01:54 00:03:50 0.497
field13373 40 00:01:54 00:03:50 0.497
field13374 40 00:01:54 00:03:50 0.497
field13375 40 00:01:54 00:03:58 0.480
field13376 40 00:01:54 00:03:50 0.497
field13377 40 00:01:54 00:03:50 0.497
field13378 40 00:01:54 00:03:47 0.503
field13379 40 00:01:54 00:03:47 0.503
field13380 40 00:01:54 00:03:50 0.497
field13381 40 00:01:54 00:03:50 0.497
field13382 40 00:01:54 00:03:50 0.497
field13383 40 00:01:54 00:03:47 0.503
field13384 40 00:01:54 00:03:50 0.497
field13385 40 00:01:54 00:03:50 0.497
field13386 40 00:01:54 00:03:52 0.491
field13387 40 00:01:54 00:03:55 0.485
field13388 40 00:01:54 00:03:55 0.485
field13389 40 00:01:54 00:03:58 0.480
field13390 40 00:01:54 00:03:47 0.503
field13391 40 00:01:54 00:03:47 0.503
field13392 40 00:01:54 00:03:47 0.503
field13393 40 00:01:54 00:03:47 0.503
field13394 40 00:01:54 00:03:47 0.503
field13395 40 00:01:54 00:03:47 0.503
field13396 40 00:01:54 00:03:50 0.497
field13397 40 00:01:54 00:03:52 0.491
field13398 40 00:01:54 00:03:52 0.491
field13399 40 00:01:54 00:03:52 0.491
field13400 40 00:01:54 00:03:50 0.497
field13401 40 00:01:54 00:03:52 0.491
field13402 40 00:01:54 00:03:50 0.497
field13403 40 00:01:54 00:03:50 0.497
field13404 40 00:01:54 00:03:47 0.503
field13405 40 00:01:54 00:03:50 0.497
field13406 40 00:01:54 00:05:14 0.364
GB63_dither_test OY 60 00:02:51 00:06:53 0.415
GB63_dither OY 48 00:02:17 00:04:35 0.498
GB62_dither OY 48 00:02:17 00:04:35 0.498
GB61_dither OY 48 00:02:17 00:04:32 0.503
GB60_dither OY 48 00:02:17 00:04:35 0.498
GB59_dither OY 48 00:02:17 00:04:38 0.493
GB58_dither OY 48 00:02:17 00:04:35 0.498
GB57_dither OY 48 00:02:17 00:04:32 0.503
GB74_dither OY 48 00:02:17 00:04:32 0.503
GB75_dither OY 48 00:02:17 00:04:35 0.498
GB76_dither OY 48 00:02:17 00:04:38 0.493
GB77_dither OY 48 00:02:17 00:04:38 0.493
GB78_dither OY 48 00:02:17 00:04:35 0.498
GB79_dither OY 48 00:02:17 00:04:32 0.503
GB80_dither OY 48 00:02:17 00:04:35 0.498
GB97_dither OY 48 00:02:17 00:04:32 0.503
GB96_dither OY 48 00:02:17 00:04:35 0.498
GB95_dither OY 48 00:02:17 00:04:35 0.498
GB94_dither OY 48 00:02:17 00:04:35 0.498
GB93_dither OY 48 00:02:17 00:04:32 0.503
GB92_dither OY 48 00:02:17 00:04:35 0.498
GB91_dither OY 48 00:02:17 00:04:35 0.498
GB108_dither OY 48 00:02:17 00:04:32 0.503
GB109_dither OY 48 00:02:17 00:04:35 0.498
GB110_dither OY 48 00:02:17 00:04:35 0.498
GB111_dither OY 48 00:02:17 00:04:32 0.503
GB112_dither OY 48 00:02:17 00:04:38 0.493
GB113_dither OY 48 00:02:17 00:04:35 0.498
GB114_dither OY 48 00:02:17 00:04:35 0.498
GB131_dither OY 48 00:02:17 00:04:32 0.503
GB130_dither OY 48 00:02:17 00:04:38 0.493
GB129_dither OY 48 00:02:17 00:04:35 0.498
GB128_dither OY 48 00:02:17 00:04:38 0.493
GB127_dither OY 48 00:02:17 00:04:32 0.503
GB126_dither OY 48 00:02:17 00:04:35 0.498
GB125_dither OY 48 00:02:17 00:04:46 0.479
GCsky 96 00:04:34 00:11:14 0.407
GB63_dither_test OH 24 00:01:08 00:03:26 0.333
GB63_dither OH 96 00:04:34 00:09:27 0.484
GB62_dither OH 96 00:04:34 00:09:39 0.474
GB61_dither OH 96 00:04:34 00:09:30 0.481
GB60_dither OH 96 00:04:34 00:09:27 0.484
GB59_dither OH 96 00:04:34 00:09:30 0.481
GB58_dither OH 96 00:04:34 00:09:25 0.486
GB57_dither OH 96 00:04:34 00:09:16 0.493
GB74_dither OH 96 00:04:34 00:09:22 0.488
GB75_dither OH 96 00:04:34 00:09:25 0.486
GB76_dither OH 96 00:04:34 00:09:30 0.481
GB77_dither OH 96 00:04:34 00:09:33 0.479
GB78_dither OH 96 00:04:34 00:09:22 0.488
GB79_dither OH 96 00:04:34 00:09:25 0.486
GB80_dither OH 96 00:04:34 00:09:22 0.488
GB97_dither OH 96 00:04:34 00:09:22 0.488
GB96_dither OH 96 00:04:34 00:09:33 0.479
GB95_dither OH 96 00:04:34 00:09:27 0.484
GB94_dither OH 96 00:04:34 00:09:25 0.486
GB93_dither OH 96 00:04:34 00:09:30 0.481
GB92_dither OH 96 00:04:34 00:09:24 0.486
GB91_dither OH 96 00:04:34 00:09:25 0.486
GB108_dither OH 96 00:04:34 00:09:27 0.484
GB109_dither OH 96 00:04:34 00:09:25 0.486
GB110_dither OH 96 00:04:34 00:09:27 0.484
GB111_dither OH 96 00:04:34 00:09:27 0.484
GB112_dither OH 96 00:04:34 00:09:33 0.479
GB113_dither OH 96 00:04:34 00:09:33 0.479
GB114_dither OH 96 00:04:34 00:09:30 0.481
GB131_dither OH 96 00:04:34 00:09:41 0.472
GB130_dither OH 96 00:04:34 00:09:30 0.481
GB129_dither OH 96 00:04:34 00:09:33 0.479
GB128_dither OH 96 00:04:34 00:09:30 0.481
GB127_dither OH 96 00:04:34 00:09:36 0.477
GB126_dither OH 96 00:04:34 00:09:33 0.479
GB125_dither OH 96 00:04:34 00:12:55 0.354










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 30:22:37 46:57:17 0.647

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 1785:09:13 903:36:41 881:32:31 246:49:54 211:34:12 211:34:12 211:34:12 131:01:36
Observed 507:53:14
(28.45%)		 202:05:52
(22.37%)		 305:47:21
(34.69%)		 42:56:43
(17.40%)		 71:42:32
(33.89%)		 153:09:56
(72.39%)		 37:58:08
(17.95%)		 131:01:36
(N/A)
Remaining 1277:15:59
(71.55%)		 701:30:48
(77.63%)		 575:45:10
(65.31%)		 203:53:10
(82.60%)		 139:51:40
(66.11%)		 58:24:16
(27.61%)		 173:36:03
(82.05%)		 00:00:00
(N/A)











Camera status (2025/05/04)



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