PRIME Observation Log 2025/07/27

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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: 2025/07/27
Local observer: Togo
Remote observer:
Weather: Clear
Comment:
Detector Temperature: 114.00022 +- 0.00217 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:20:37
Morning 07:05:39
Science Observation
(Sun altitude < -10°)
Start 18:43:00
End 06:43:18
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:43:00
End 03:45:24


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:55:39 12:00:18 0.994
GB Time 08:48:28 09:02:24 0.974
Non-GB Time 03:07:11 02:57:53 1.052


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 440 00:20:58 00:38:22 0.546
GB 5324 04:13:46 08:48:28 0.480
SKY 24 00:01:08 00:02:55 0.391
SAAO 442 00:21:04 00:46:03 0.457
OU 442 00:21:04 00:46:03 0.457
NASA 442 00:21:04 00:46:03 0.457
ABC 442 00:21:04 00:46:03 0.457


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 440 00:20:58 00:38:22 0.546
Bulge 5228 04:09:12 08:38:12 0.481
GB 24 00:01:08 00:02:55 0.391
SKY 96 00:04:34 00:10:15 0.446
all_sky_grid 1768 01:24:16 03:04:15 0.457


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 440 00:20:58 00:38:22 0.546
GB74_test OJ 16 00:00:45 00:03:17 0.232
GB74_dither OJ 24 00:01:08 00:02:19 0.493
GB75_dither OJ 24 00:01:08 00:02:16 0.503
GB76_dither OJ 24 00:01:08 00:02:16 0.503
GB77_dither OJ 24 00:01:08 00:02:19 0.493
GB78_dither OJ 24 00:01:08 00:02:16 0.503
GB79_dither OJ 24 00:01:08 00:02:19 0.493
GB80_dither OJ 24 00:01:08 00:02:21 0.483
GB97_dither OJ 24 00:01:08 00:02:19 0.493
GB96_dither OJ 24 00:01:08 00:02:16 0.503
GB95_dither OJ 24 00:01:08 00:02:21 0.484
GB94_dither OJ 24 00:01:08 00:02:19 0.493
GB93_dither OJ 24 00:01:08 00:02:19 0.493
GB92_dither OJ 24 00:01:08 00:02:19 0.493
GB91_dither OJ 24 00:01:08 00:02:19 0.493
GB108_dither OJ 24 00:01:08 00:02:21 0.484
GB109_dither OJ 24 00:01:08 00:02:21 0.484
GB110_dither OJ 24 00:01:08 00:02:19 0.493
GB111_dither OJ 24 00:01:08 00:02:21 0.484
GB112_dither OJ 24 00:01:08 00:02:19 0.493
GB113_dither OJ 24 00:01:08 00:02:21 0.484
GB114_dither OJ 24 00:01:08 00:02:41 0.425
GCsky 120 00:05:43 00:13:11 0.434
GB76_test OH 4 00:00:11 00:01:15 0.151
GB76_dither OH 432 00:20:35 00:42:38 0.483
GB77_dither OH 456 00:21:44 00:44:29 0.489
GB78_dither OH 432 00:20:35 00:42:04 0.489
GB94_dither OH 456 00:21:44 00:44:40 0.487
GB111_dither OH 456 00:21:44 00:44:37 0.487
GB110_dither OH 456 00:21:44 00:44:37 0.487
GB109_dither OH 240 00:11:26 00:24:13 0.472
GB92_dither OH 120 00:05:43 00:11:47 0.485
GB93_dither OH 120 00:05:43 00:11:46 0.485
GB75_dither OH 216 00:10:17 00:21:06 0.488
GB112_dither OH 216 00:10:17 00:21:14 0.485
GB79_dither OH 216 00:10:17 00:22:36 0.456
GB60_dither OH 96 00:04:34 00:09:27 0.483
GB95_dither OH 96 00:04:34 00:09:25 0.486
GB113_dither OH 96 00:04:34 00:09:22 0.488
GB108_dither OH 24 00:01:08 00:02:24 0.474
GB91_dither OH 24 00:01:08 00:02:24 0.474
GB74_dither OH 24 00:01:08 00:02:19 0.493
GB71_dither OH 24 00:01:08 00:02:24 0.474
GB72_dither OH 24 00:01:08 00:02:21 0.484
GB73_dither OH 24 00:01:08 00:02:24 0.474
GB90_dither OH 24 00:01:08 00:02:19 0.493
GB89_dither OH 24 00:01:08 00:02:19 0.493
GB88_dither OH 24 00:01:08 00:02:21 0.484
GB105_dither OH 24 00:01:08 00:02:19 0.493
GB106_dither OH 24 00:01:08 00:02:19 0.493
GB107_dither OH 24 00:01:08 00:03:23 0.337
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:38 0.432
GB117_dither OH 24 00:01:08 00:02:21 0.484
GB116_dither OH 24 00:01:08 00:02:21 0.484
GB115_dither OH 24 00:01:08 00:02:21 0.484
GB98_dither OH 24 00:01:08 00:02:21 0.483
GB99_dither OH 24 00:01:08 00:02:21 0.484
GB100_dither OH 24 00:01:08 00:02:21 0.483
GB83_dither OH 24 00:01:08 00:02:19 0.493
GB82_dither OH 24 00:01:08 00:02:19 0.493
GB81_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:27 0.465
field12882_test 20 00:00:57 00:04:22 0.218
field12882 40 00:01:54 00:03:52 0.491
field12883 40 00:01:54 00:03:52 0.491
field12884 40 00:01:54 00:03:50 0.497
field12885 40 00:01:54 00:03:55 0.485
field12886 40 00:01:54 00:03:52 0.491
field12887 40 00:01:54 00:03:55 0.485
field12888 40 00:01:54 00:03:58 0.480
field12889 40 00:01:54 00:03:58 0.480
field12890 40 00:01:54 00:03:52 0.491
field12891 40 00:01:54 00:04:01 0.474
field12892 40 00:01:54 00:03:52 0.491
field12893 40 00:01:54 00:03:52 0.491
field12894 40 00:01:54 00:03:50 0.497
field12895 40 00:01:54 00:03:52 0.491
field12896 40 00:01:54 00:03:50 0.497
field12897 40 00:01:54 00:03:50 0.497
field12898 40 00:01:54 00:03:50 0.497
field12899 40 00:01:54 00:03:50 0.497
field12900 40 00:01:54 00:03:52 0.491
field12901 40 00:01:54 00:03:58 0.480
field12902 40 00:01:54 00:03:52 0.491
field12903 40 00:01:54 00:03:50 0.497
field12904 40 00:01:54 00:04:12 0.453
field12905_test 28 00:01:20 00:05:21 0.249
field12905 40 00:01:54 00:09:20 0.204
field12906 40 00:01:54 00:03:52 0.491
field12907 40 00:01:54 00:03:55 0.485
field12908 40 00:01:54 00:03:55 0.485
field12909 40 00:01:54 00:03:52 0.491
field12910 40 00:01:54 00:03:58 0.480
field12911 40 00:01:54 00:03:55 0.485
field12912 40 00:01:54 00:03:58 0.480
field12913 40 00:01:54 00:03:55 0.485
field12914 40 00:01:54 00:03:55 0.485
field12915 40 00:01:54 00:03:52 0.491
field12916 40 00:01:54 00:03:52 0.491
field12917 40 00:01:54 00:03:52 0.491
field12918 40 00:01:54 00:03:50 0.497
field12919 40 00:01:54 00:04:04 0.469
field12920 40 00:01:54 00:04:06 0.463
field12921 40 00:01:54 00:03:55 0.485
field12922 40 00:01:54 00:04:04 0.469
field12923 40 00:01:54 00:04:06 0.463
field12924 40 00:01:54 00:04:17 0.445










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 197:59:06 329:36:10 0.601

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 1893:57:26 974:26:00 919:31:25 257:27:59 220:41:08 220:41:08 220:41:08 165:46:29
Observed 1129:41:54
(59.65%)		 709:00:13
(72.76%)		 420:41:40
(45.75%)		 72:48:29
(28.28%)		 99:59:44
(45.31%)		 183:14:53
(83.04%)		 64:38:33
(29.29%)		 165:46:29
(N/A)
Remaining 764:15:31
(40.35%)		 265:25:46
(27.24%)		 498:49:44
(54.25%)		 184:39:30
(71.72%)		 120:41:23
(54.69%)		 37:26:15
(16.96%)		 156:02:34
(70.71%)		 00:00:00
(N/A)











Camera status (2025/07/27)



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