PRIME Observation Log 2025/05/27

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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: 2025/05/27
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.00001 +- 0.00099 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:04:49
Morning 07:03:24
Science Observation
(Sun altitude < -10°)
Start 18:27:34
End 06:40:37
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:15:57
End 06:40:37


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 12:04:48 12:13:03 0.989
GB Time 10:26:02 10:24:40 1.002
Non-GB Time 01:38:45 01:48:23 0.911


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 332 00:15:49 00:34:32 0.458
GB 5988 04:45:25 10:26:02 0.456
SAAO 243 00:11:34 00:24:41 0.469
OU 243 00:11:34 00:24:41 0.469
NASA 243 00:11:34 00:24:41 0.469
ABC 243 00:11:34 00:24:41 0.469


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 332 00:15:49 00:34:32 0.458
all_sky_grid 972 00:46:19 01:38:45 0.469
Bulge 5792 04:36:05 10:00:00 0.460
SKY 196 00:09:20 00:26:02 0.359


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 12 00:00:34 00:06:24 0.089
FLAT OY 320 00:15:15 00:28:07 0.542
field15873_test 12 00:00:34 00:04:13 0.136
field15873 40 00:01:54 00:03:50 0.497
field15874 40 00:01:54 00:03:47 0.503
field15875 40 00:01:54 00:03:47 0.503
field15876 40 00:01:54 00:03:50 0.497
field15877 40 00:01:54 00:03:52 0.491
field15878 40 00:01:54 00:03:50 0.497
field15879 40 00:01:54 00:03:50 0.497
field15880 40 00:01:54 00:03:52 0.491
field15881 40 00:01:54 00:03:55 0.485
field15882 40 00:01:54 00:03:50 0.497
field15883 40 00:01:54 00:03:52 0.491
field15884 40 00:01:54 00:03:50 0.497
field15885 40 00:01:54 00:03:50 0.497
field15886 40 00:01:54 00:03:47 0.503
field15887 40 00:01:54 00:03:50 0.497
field15888 40 00:01:54 00:03:58 0.480
field15889 40 00:01:54 00:03:52 0.491
field15890 40 00:01:54 00:03:52 0.491
field15891 40 00:01:54 00:04:20 0.439
field15892 40 00:01:54 00:03:52 0.491
field15893 40 00:01:54 00:03:50 0.497
field15894 40 00:01:54 00:03:47 0.503
field15895 40 00:01:54 00:03:47 0.503
field15896 40 00:01:54 00:05:33 0.343
GB63_test OJ 24 00:01:08 00:08:31 0.134
GB63_dither OJ 48 00:02:17 00:04:43 0.484
GB80_dither OJ 48 00:02:17 00:04:35 0.498
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB79_dither OJ 48 00:02:17 00:04:38 0.493
GB62_dither OJ 48 00:02:17 00:04:35 0.498
GB61_dither OJ 48 00:02:17 00:04:38 0.493
GB60_dither OJ 48 00:02:17 00:04:32 0.503
GB59_dither OJ 48 00:02:17 00:04:35 0.498
GB58_dither OJ 48 00:02:17 00:04:38 0.493
GB57_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:05:31 0.414
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:32 0.503
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:05:34 0.411
GB91_test OH 4 00:00:11 00:01:52 0.102
GCsky 196 00:09:20 00:26:02 0.359
GB108_test OH 8 00:00:22 00:02:34 0.148
GB108_dither OH 144 00:06:51 00:14:11 0.484
GB109_dither OH 144 00:06:51 00:14:14 0.482
GB110_dither OH 144 00:06:51 00:14:31 0.473
GB111_dither OH 144 00:06:51 00:14:22 0.477
GB112_dither OH 144 00:06:51 00:14:08 0.485
GB113_dither OH 144 00:06:51 00:14:14 0.482
GB114_dither OH 144 00:06:51 00:15:19 0.448
GB131_dither OH 120 00:05:43 00:11:49 0.484
GB130_dither OH 120 00:05:43 00:11:47 0.485
GB129_dither OH 120 00:05:43 00:11:41 0.489
GB128_dither OH 120 00:05:43 00:11:49 0.484
GB127_dither OH 120 00:05:43 00:11:44 0.487
GB126_dither OH 120 00:05:43 00:11:44 0.487
GB125_dither OH 120 00:05:43 00:13:33 0.422
GB63_dither OH 120 00:05:43 00:11:58 0.478
GB62_dither OH 120 00:05:43 00:12:01 0.476
GB61_dither OH 128 00:06:06 00:20:14 0.302
GB60_dither OH 120 00:05:43 00:12:57 0.442
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 00:11:44 0.487
GB74_dither OH 120 00:05:43 00:11:47 0.485
GB75_dither OH 120 00:05:43 00:11:46 0.485
GB76_dither OH 120 00:05:43 00:11:46 0.485
GB77_dither OH 120 00:05:43 00:11:46 0.485
GB78_dither OH 120 00:05:43 00:11:44 0.487
GB79_dither OH 120 00:05:43 00:11:41 0.489
GB80_dither OH 120 00:05:43 00:11:41 0.489
GB97_dither OH 120 00:05:43 00:11:44 0.487
GB96_dither OH 120 00:05:43 00:12:01 0.476
GB95_dither OH 120 00:05:43 00:11:49 0.484
GB94_dither OH 120 00:05:43 00:11:47 0.485
GB93_dither OH 120 00:05:43 00:11:52 0.482
GB92_dither OH 120 00:05:43 00:11:44 0.487
GB91_dither OH 120 00:05:43 00:15:28 0.370
GB61_test OH 24 00:01:08 00:06:53 0.166
GB131_test OJ 12 00:00:34 00:02:54 0.196
GB131_dither OJ 48 00:02:17 00:04:38 0.493
GB130_dither OJ 48 00:02:17 00:04:35 0.498
GB129_dither OJ 48 00:02:17 00:04:32 0.503
GB128_dither OJ 48 00:02:17 00:04:38 0.493
GB127_dither OJ 48 00:02:17 00:04:38 0.493
GB126_dither OJ 48 00:02:17 00:04:32 0.503
GB125_dither OJ 48 00:02:17 00:04:41 0.488










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 212:32:52 323:31:44 0.657

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 1828:55:44 937:43:59 891:11:44 249:32:05 213:53:13 213:53:13 213:53:13 144:44:35
Observed 689:56:58
(37.72%)		 346:25:53
(36.94%)		 343:31:04
(38.55%)		 53:08:57
(21.30%)		 81:57:33
(38.32%)		 161:48:10
(75.65%)		 46:36:22
(21.79%)		 144:44:35
(N/A)
Remaining 1138:58:45
(62.28%)		 591:18:05
(63.06%)		 547:40:39
(61.45%)		 196:23:07
(78.70%)		 131:55:39
(61.68%)		 52:05:02
(24.35%)		 167:16:50
(78.21%)		 00:00:00
(N/A)











Camera status (2025/05/27)



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