PRIME Observation Log 2025/04/11

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Raw Log (Time is in SA time)
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Observation Log (Time is in UT)

Date: 2025/04/11
Local observer: Seiya Nakayama,Ryo Ogawa
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00005 +- 0.00126 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:42:00
Morning 06:33:37
Science Observation
(Sun altitude < -10°)
Start 19:03:24
End 06:12:12
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:16:48
End 06:12:12


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:05:14 11:08:48 0.995
GB Time 06:52:02 06:55:24 0.992
Non-GB Time 04:13:12 04:13:23 0.999


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.)
ALLSKY 2572 02:02:35 04:13:12 0.484
CALIB 572 00:27:15 00:55:52 0.488
GB 3944 03:07:59 06:52:02 0.456
SAAO 643 00:30:38 01:03:18 0.484
OU 643 00:30:38 01:03:18 0.484
NASA 643 00:30:38 01:03:18 0.484
ABC 643 00:30:38 01:03:18 0.484


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 2572 02:02:35 04:13:12 0.484
TWILIGHT 572 00:27:15 00:55:52 0.488
Bulge 3872 03:04:33 06:40:58 0.460
SKY 72 00:03:25 00:11:04 0.310


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field9158 4 00:00:11 00:00:41 0.276
FLAT_test OJ 8 00:00:22 00:03:33 0.107
FLAT OJ 564 00:26:53 00:52:19 0.514
field8865_test 32 00:01:31 00:07:58 0.191
field8865 40 00:01:54 00:03:55 0.485
field8866 40 00:01:54 00:03:50 0.497
field8867 40 00:01:54 00:03:47 0.503
field8868 40 00:01:54 00:03:47 0.503
field8869 40 00:01:54 00:03:47 0.503
field8870 40 00:01:54 00:03:47 0.503
field8871 40 00:01:54 00:03:50 0.497
field8872 40 00:01:54 00:03:47 0.503
field8873 40 00:01:54 00:03:47 0.503
field8874 40 00:01:54 00:03:50 0.497
field8875 40 00:01:54 00:03:50 0.497
field8876 40 00:01:54 00:03:58 0.480
field8877 40 00:01:54 00:03:52 0.491
field8878 40 00:01:54 00:03:47 0.503
field8879 40 00:01:54 00:03:47 0.503
field8880 40 00:01:54 00:03:47 0.503
field8881 40 00:01:54 00:03:47 0.503
field8882 40 00:01:54 00:03:47 0.503
field8883 40 00:01:54 00:03:47 0.503
field8884 40 00:01:54 00:03:47 0.503
field8885 40 00:01:54 00:03:47 0.503
field8886 40 00:01:54 00:03:47 0.503
field8887 40 00:01:54 00:03:47 0.503
field8888 40 00:01:54 00:03:47 0.503
field8889 40 00:01:54 00:03:47 0.503
field8890 40 00:01:54 00:03:47 0.503
field8891 40 00:01:54 00:03:47 0.503
field8892 40 00:01:54 00:03:47 0.503
field8893 40 00:01:54 00:03:47 0.503
field8894 40 00:01:54 00:03:47 0.503
field8895 40 00:01:54 00:03:47 0.503
field8896 40 00:01:54 00:03:50 0.497
field8897 40 00:01:54 00:03:52 0.491
field8898 40 00:01:54 00:03:52 0.491
field8899 40 00:01:54 00:03:52 0.491
field8900 40 00:01:54 00:03:50 0.497
field8901 40 00:01:54 00:03:47 0.503
field8902 40 00:01:54 00:03:50 0.497
field8903 40 00:01:54 00:03:47 0.503
field8904 40 00:01:54 00:03:47 0.503
field8905 40 00:01:54 00:03:47 0.503
field8906 40 00:01:54 00:03:47 0.503
field8907 40 00:01:54 00:03:47 0.503
field8908 40 00:01:54 00:04:26 0.429
field3938_test 16 00:00:45 00:02:54 0.261
field3938 40 00:01:54 00:03:50 0.497
field4580 40 00:01:54 00:03:47 0.503
field4581 40 00:01:54 00:03:52 0.491
field5033 40 00:01:54 00:03:50 0.497
field5034 40 00:01:54 00:03:50 0.497
field5035 40 00:01:54 00:03:50 0.497
field5265 40 00:01:54 00:03:47 0.503
field5266 40 00:01:54 00:03:47 0.503
field5267 40 00:01:54 00:03:47 0.503
field5268 40 00:01:54 00:03:50 0.497
field5502 40 00:01:54 00:03:47 0.503
field5503 40 00:01:54 00:03:47 0.503
field5504 40 00:01:54 00:03:47 0.503
field5505 40 00:01:54 00:03:50 0.497
field5989 40 00:01:54 00:03:47 0.503
field5990 40 00:01:54 00:03:47 0.503
field5991 40 00:01:54 00:03:50 0.497
field6240 40 00:01:54 00:03:47 0.503
field6241 40 00:01:54 00:04:40 0.408
GB63_dither_test OH 104 00:04:57 00:25:01 0.198
GB63_dither OH 72 00:03:25 00:07:36 0.451
GB62_dither OH 72 00:03:25 00:07:19 0.468
GB61_dither OH 96 00:04:34 00:09:30 0.481
GB60_dither OH 72 00:03:25 00:07:14 0.474
GB59_dither OH 72 00:03:25 00:06:57 0.493
GB58_dither OH 72 00:03:25 00:07:03 0.487
GB57_dither OH 84 00:04:00 00:09:24 0.426
GB74_dither OH 76 00:03:37 00:07:06 0.510
GB75_dither OH 72 00:03:25 00:06:46 0.507
GB76_dither OH 72 00:03:25 00:06:49 0.503
GB77_dither OH 72 00:03:25 00:06:49 0.503
GB78_dither OH 72 00:03:25 00:06:43 0.510
GB79_dither OH 72 00:03:25 00:06:54 0.497
GB80_dither OH 72 00:03:25 00:08:32 0.402
GB97_dither OH 48 00:02:17 00:04:27 0.514
GB96_dither OH 48 00:02:17 00:04:32 0.503
GB95_dither OH 48 00:02:17 00:04:35 0.498
GB94_dither OH 48 00:02:17 00:04:35 0.498
GB93_dither OH 48 00:02:17 00:04:29 0.509
GB92_dither OH 48 00:02:17 00:04:18 0.531
GB91_dither OH 48 00:02:17 00:04:29 0.509
GB108_dither OH 48 00:02:17 00:04:24 0.519
GB109_dither OH 48 00:02:17 00:04:27 0.514
GB110_dither OH 48 00:02:17 00:04:32 0.503
GB111_dither OH 48 00:02:17 00:05:31 0.414
GB112_dither OH 48 00:02:17 00:04:49 0.474
GB113_dither OH 48 00:02:17 00:04:27 0.514
GB114_dither OH 48 00:02:17 00:04:32 0.503
GB131_dither OH 48 00:02:17 00:04:29 0.509
GB130_dither OH 48 00:02:17 00:04:29 0.509
GB129_dither OH 48 00:02:17 00:05:03 0.452
GB128_dither OH 48 00:02:17 00:04:18 0.531
GB127_dither OH 48 00:02:17 00:04:24 0.519
GB126_dither OH 48 00:02:17 00:04:27 0.514
GB125_dither OH 48 00:02:17 00:04:21 0.525
GCsky 72 00:03:25 00:11:04 0.310
GB63_dither_test OY 32 00:01:31 00:08:46 0.174
GB63_dither OY 48 00:02:17 00:04:35 0.498
GB62_dither OY 48 00:02:17 00:04:38 0.493
GB61_dither OY 48 00:02:17 00:04:35 0.498
GB60_dither OY 48 00:02:17 00:04:35 0.498
GB59_dither OY 48 00:02:17 00:04:35 0.498
GB58_dither OY 48 00:02:17 00:04:38 0.493
GB57_dither OY 48 00:02:17 00:04:35 0.498
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 00:04:35 0.498
GB77_dither OY 48 00:02:17 00:04:35 0.498
GB78_dither OY 48 00:02:17 00:04:38 0.493
GB79_dither OY 48 00:02:17 00:04:35 0.498
GB80_dither OY 48 00:02:17 00:04:38 0.493
GB97_dither OY 48 00:02:17 00:04:35 0.498
GB96_dither OY 48 00:02:17 00:04:35 0.498
GB95_dither OY 48 00:02:17 00:04:38 0.493
GB94_dither OY 48 00:02:17 00:04:35 0.498
GB93_dither OY 48 00:02:17 00:04:35 0.498
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 00:04:35 0.498
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 00:04:38 0.493
GB112_dither OY 48 00:02:17 00:04:35 0.498
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 00:04:38 0.493
GB130_dither OY 48 00:02:17 00:09:27 0.242
GB129_dither OY 48 00:02:17 00:04:38 0.493
GB128_dither OY 48 00:02:17 00:04:35 0.498
GB127_dither OY 48 00:02:17 00:04:41 0.488
GB126_dither OY 48 00:02:17 00:04:41 0.488
GB125_dither OY 48 00:02:17 00:05:03 0.452










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 40:18:47 120:54:33 0.333

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 1766:08:33 900:24:43 865:43:49 242:24:16 207:46:31 207:46:31 207:46:31 114:24:41
Observed 356:46:45
(20.20%)		 108:45:51
(12.08%)		 248:00:54
(28.65%)		 30:49:19
(12.72%)		 60:41:08
(29.21%)		 129:33:41
(62.36%)		 26:56:44
(12.97%)		 114:24:41
(N/A)
Remaining 1409:21:47
(79.80%)		 791:38:52
(87.92%)		 617:42:55
(71.35%)		 211:34:56
(87.28%)		 147:05:22
(70.79%)		 78:12:49
(37.64%)		 180:49:46
(87.03%)		 00:00:00
(N/A)











Camera status (2025/04/11)