PRIME Observation Log 2025/05/23

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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: 2025/05/23
Local observer: Ryusei
Remote observer:
Weather:
Comment:
Detector Temperature: 113.99997 +- 0.00228 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:06:18
Morning 07:01:04
Science Observation
(Sun altitude < -10°)
Start 18:28:56
End 06:38:24
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:31:41
End 06:38:24


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 12:15:10 12:09:27 1.008
GB Time 10:23:13 10:06:43 1.027
Non-GB Time 01:51:57 02:02:44 0.912


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 304 00:14:29 00:32:35 0.445
GB 6076 04:49:37 10:23:13 0.465
SAAO 255 00:12:09 00:27:59 0.434
OU 255 00:12:09 00:27:59 0.434
NASA 255 00:12:09 00:27:59 0.434
ABC 255 00:12:09 00:27:59 0.434


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 304 00:14:29 00:32:35 0.445
all_sky_grid 1020 00:48:37 01:51:57 0.434
test 24 00:01:08 00:09:33 0.120
Bulge 5884 04:40:28 09:49:40 0.476
SKY 168 00:08:00 00:23:59 0.334


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test ZO 24 00:01:08 00:08:17 0.138
FLAT ZO 280 00:13:20 00:24:17 0.550
field15236_test 20 00:00:57 00:09:44 0.098
field15236 40 00:01:54 00:03:50 0.497
field15237 40 00:01:54 00:03:47 0.503
field15238 40 00:01:54 00:03:50 0.497
field15239 40 00:01:54 00:03:52 0.491
field15240 40 00:01:54 00:03:52 0.491
field15241 40 00:01:54 00:03:50 0.497
field15242 40 00:01:54 00:03:50 0.497
field15243 40 00:01:54 00:03:55 0.485
field15244 40 00:01:54 00:03:52 0.491
field15245 40 00:01:54 00:05:08 0.371
field15246 40 00:01:54 00:03:50 0.497
field15247 40 00:01:54 00:03:50 0.497
field15248 40 00:01:54 00:03:47 0.503
field15249 40 00:01:54 00:03:50 0.497
field15250 40 00:01:54 00:04:23 0.434
field15251 40 00:01:54 00:03:50 0.497
field15252 40 00:01:54 00:03:50 0.497
field15253 40 00:01:54 00:03:52 0.491
field15254 40 00:01:54 00:03:52 0.491
field15255 40 00:01:54 00:03:50 0.497
field15256 40 00:01:54 00:03:50 0.497
field15257 40 00:01:54 00:03:47 0.503
field15258 40 00:01:54 00:03:47 0.503
field15259 40 00:01:54 00:03:52 0.491
field15260 40 00:01:54 00:08:07 0.234
test 24 00:01:08 00:09:33 0.120
GB63_dither OJ 48 00:02:17 00:07:06 0.322
GB62_dither OJ 48 00:02:17 00:04:38 0.493
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:04:35 0.498
GB59_dither OJ 48 00:02:17 00:04:38 0.493
GB58_dither OJ 48 00:02:17 00:04:32 0.503
GB57_dither OJ 48 00:02:17 00:04:32 0.503
GB74_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:32 0.503
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:38 0.493
GB97_dither OJ 48 00:02:17 00:04:32 0.503
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB93_dither OJ 48 00:02:17 00:04:32 0.503
GB92_dither OJ 48 00:02:17 00:04:32 0.503
GB91_dither OJ 48 00:02:17 00:04:41 0.488
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:32 0.503
GB111_dither OJ 48 00:02:17 00:04:32 0.503
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:35 0.498
GB114_dither OJ 48 00:02:17 00:04:32 0.503
GB131_dither OJ 48 00:02:17 00:04:32 0.503
GB130_dither OJ 48 00:02:17 00:04:38 0.493
GB129_dither OJ 48 00:02:17 00:04:35 0.498
GB128_dither OJ 48 00:02:17 00:04:38 0.493
GB127_dither OJ 48 00:02:17 00:04:32 0.503
GB126_dither OJ 48 00:02:17 00:04:35 0.498
GB125_dither OJ 48 00:02:17 00:05:09 0.444
GCsky 168 00:08:00 00:23:59 0.334
GB63_test OH 4 00:00:11 00:01:21 0.140
GB63_dither OH 120 00:05:43 00:11:52 0.482
GB62_dither OH 120 00:05:43 00:12:03 0.474
GB61_dither OH 120 00:05:43 00:11:49 0.484
GB60_dither OH 120 00:05:43 00:11:55 0.480
GB59_dither OH 120 00:05:43 00:11:46 0.485
GB58_dither OH 120 00:05:43 00:11:44 0.487
GB57_dither OH 120 00:05:43 00:12:09 0.471
GB74_dither OH 120 00:05:43 00:11:52 0.482
GB75_dither OH 120 00:05:43 00:11:55 0.480
GB76_dither OH 120 00:05:43 00:11:49 0.484
GB77_dither OH 120 00:05:43 00:12:06 0.472
GB78_dither OH 120 00:05:43 00:11:49 0.484
GB79_dither OH 120 00:05:43 00:11:52 0.482
GB80_dither OH 120 00:05:43 00:11:47 0.485
GB97_dither OH 120 00:05:43 00:11:47 0.485
GB96_dither OH 120 00:05:43 00:11:49 0.484
GB95_dither OH 120 00:05:43 00:11:58 0.478
GB94_dither OH 120 00:05:43 00:11:55 0.480
GB93_dither OH 120 00:05:43 00:11:41 0.489
GB92_dither OH 120 00:05:43 00:11:46 0.485
GB91_dither OH 120 00:05:43 00:11:44 0.487
GB108_dither OH 144 00:06:51 00:14:11 0.484
GB109_dither OH 120 00:05:43 00:11:55 0.480
GB110_dither OH 120 00:05:43 00:11:46 0.485
GB111_dither OH 144 00:06:51 00:19:14 0.357
GB112_dither OH 120 00:05:43 00:12:01 0.476
GB113_dither OH 120 00:05:43 00:11:46 0.485
GB114_dither OH 96 00:04:34 00:09:27 0.484
GB131_dither OH 96 00:04:34 00:09:33 0.479
GB130_dither OH 120 00:05:43 00:12:03 0.474
GB129_dither OH 120 00:05:43 00:11:52 0.482
GB128_dither OH 120 00:05:43 00:11:49 0.484
GB127_dither OH 120 00:05:43 00:11:52 0.482
GB126_dither OH 120 00:05:43 00:11:52 0.482
GB125_dither OH 120 00:05:43 00:15:53 0.360










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 168:33:48 274:44:45 0.614

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 1809:20:08 921:18:58 888:01:09 248:38:43 213:07:28 213:07:28 213:07:28 143:18:59
Observed 645:57:53
(35.70%)		 309:24:59
(33.58%)		 336:32:54
(37.90%)		 50:54:42
(20.48%)		 80:22:55
(37.72%)		 160:13:32
(75.18%)		 45:01:44
(21.13%)		 143:18:59
(N/A)
Remaining 1163:22:14
(64.30%)		 611:53:59
(66.42%)		 551:28:15
(62.10%)		 197:44:01
(79.52%)		 132:44:32
(62.28%)		 52:53:56
(24.82%)		 168:05:44
(78.87%)		 00:00:00
(N/A)











Camera status (2025/05/23)



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