PRIME Observation Log 2025/11/21

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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: 2025/11/21
Local observer:
Remote observer: Ryunosuke
Weather: clear
Comment:
Detector Temperature: 116.99997 +- 0.00091 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:45:18
Morning 04:59:59
Science Observation
(Sun altitude < -10°)
Start 20:09:53
End 04:35:24
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start --:--:--
End --:--:--


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:38:59 08:25:31 1.027
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 08:38:59 08:25:31 1.027


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 00:45:08 0.351
SAAO 1003 00:47:48 02:09:44 0.368
OU 1003 00:47:48 02:09:44 0.368
NASA 1003 00:47:48 02:09:44 0.368
ABC 1003 00:47:48 02:09:44 0.368


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 332 00:15:49 00:45:08 0.351
all_sky_grid 4012 03:11:14 08:38:59 0.368


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_TEST OH 4 00:00:11 00:02:09 0.088
FLAT OH 324 00:15:26 00:40:58 0.377
field18227_test 12 00:00:34 00:11:16 0.051
field18227 40 00:01:54 00:05:06 0.373
field16658 40 00:01:54 00:05:15 0.363
field16659 40 00:01:54 00:05:01 0.380
field16660 40 00:01:54 00:04:55 0.387
field16661 40 00:01:54 00:04:58 0.383
field16662 40 00:01:54 00:04:58 0.383
field16663 40 00:01:54 00:05:26 0.350
field16664 40 00:01:54 00:04:49 0.395
field16665 40 00:01:54 00:05:18 0.359
field16666 40 00:01:54 00:04:47 0.398
field16667 40 00:01:54 00:05:20 0.356
field16668 40 00:01:54 00:04:52 0.391
field16669 40 00:01:54 00:04:47 0.398
field17614 40 00:01:54 00:05:12 0.366
field17615 40 00:01:54 00:05:09 0.369
field17616 40 00:01:54 00:05:12 0.366
field17617 40 00:01:54 00:05:21 0.356
field17618 40 00:01:54 00:05:12 0.366
field17619 40 00:01:54 00:04:58 0.383
field17620 40 00:01:54 00:05:29 0.347
field17621 40 00:01:54 00:05:04 0.376
field17622 40 00:01:54 00:05:29 0.347
field17623 40 00:01:54 00:04:55 0.387
field17624 40 00:01:54 00:05:04 0.376
field17625 40 00:01:54 00:05:01 0.380
field17626 40 00:01:54 00:05:12 0.366
field17627 40 00:01:54 00:05:04 0.376
field17628 40 00:01:54 00:05:12 0.366
field17629 40 00:01:54 00:04:58 0.383
field17630 40 00:01:54 00:04:58 0.383
field17631 40 00:01:54 00:04:55 0.387
field17632 40 00:01:54 00:05:12 0.366
field18259 40 00:01:54 00:05:04 0.376
field18260 40 00:01:54 00:05:26 0.350
field17949 40 00:01:54 00:05:04 0.376
field17950 40 00:01:54 00:04:58 0.383
field17639 40 00:01:54 00:04:47 0.398
field18578 40 00:01:54 00:05:15 0.363
field18579 40 00:01:54 00:05:01 0.380
field18580 40 00:01:54 00:05:15 0.363
field18581 40 00:01:54 00:05:01 0.380
field18582 40 00:01:54 00:05:01 0.380
field18583 40 00:01:54 00:05:15 0.363
field17647 40 00:01:54 00:04:47 0.398
field17334 40 00:01:54 00:04:55 0.387
field17335 40 00:01:54 00:05:09 0.369
field17022 40 00:01:54 00:04:55 0.387
field17652 40 00:01:54 00:04:52 0.391
field17653 40 00:01:54 00:04:44 0.402
field17654 40 00:01:54 00:04:58 0.383
field17655 40 00:01:54 00:04:47 0.398
field17656 40 00:01:54 00:04:47 0.398
field17657 40 00:01:54 00:04:50 0.394
field18907 40 00:01:54 00:04:47 0.398
field18908 40 00:01:54 00:04:47 0.398
field18909 40 00:01:54 00:04:49 0.395
field18910 40 00:01:54 00:05:15 0.363
field18911 40 00:01:54 00:05:09 0.369
field18912 40 00:01:54 00:05:09 0.369
field18913 40 00:01:54 00:04:55 0.387
field18914 40 00:01:54 00:04:55 0.387
field18915 40 00:01:54 00:04:58 0.383
field18916 40 00:01:54 00:04:47 0.398
field18917 40 00:01:54 00:05:23 0.353
field18918 40 00:01:54 00:04:44 0.402
field18919 40 00:01:54 00:05:23 0.353
field18920 40 00:01:54 00:04:50 0.394
field18921 40 00:01:54 00:04:50 0.394
field18922 40 00:01:54 00:04:55 0.387
field18923 40 00:01:54 00:05:01 0.380
field18924 40 00:01:54 00:04:50 0.394
field18925 40 00:01:54 00:05:01 0.380
field18926 40 00:01:54 00:05:01 0.380
field18927 40 00:01:54 00:04:58 0.383
field18928 40 00:01:54 00:04:50 0.394
field18929 40 00:01:54 00:04:54 0.388
field18930 40 00:01:54 00:04:56 0.386
field18931 40 00:01:54 00:04:50 0.394
field18932 40 00:01:54 00:04:50 0.394
field18933 40 00:01:54 00:05:12 0.366
field18934 40 00:01:54 00:04:52 0.391
field18311 40 00:01:54 00:05:01 0.380
field18310 40 00:01:54 00:05:04 0.376
field15781 40 00:01:54 00:06:14 0.306
field23133 40 00:01:54 00:05:04 0.376
field23134 40 00:01:54 00:05:12 0.366
field23135 40 00:01:54 00:04:47 0.398
field23136 40 00:01:54 00:04:58 0.383
field23137 40 00:01:54 00:04:50 0.394
field23138 40 00:01:54 00:05:17 0.361
field23139 40 00:01:54 00:04:50 0.393
field23140 40 00:01:54 00:04:58 0.383
field23141 40 00:01:54 00:04:58 0.383
field23142 40 00:01:54 00:04:50 0.394
field23143 40 00:01:54 00:04:54 0.388
field23144 40 00:01:54 00:05:02 0.379
field23145 40 00:01:54 00:05:23 0.353
field23146 40 00:01:54 00:05:01 0.380
field23147 40 00:01:54 00:04:52 0.391
field23148 40 00:01:54 00:08:48 0.217
FLAT_test OH 4 00:00:11 00:01:59 0.095










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 224:49:02 377:25:14 0.596
Aug 230:19:15 357:22:01 0.644
Sep 190:24:38 318:36:32 0.598
Oct 183:24:57 296:59:20 0.618
Nov 117:06:54 183:00:09 0.640

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 2040:09:39 1045:33:03 994:36:36 278:29:27 238:42:23 238:42:23 238:42:23 223:33:15
Observed 1877:47:41
(92.04%)		 1045:33:03
(100.00%)		 832:14:38
(83.68%)		 192:59:04
(69.30%)		 184:24:13
(77.25%)		 306:20:39
(128.34%)		 148:30:40
(62.22%)		 223:33:15
(N/A)
Remaining 162:21:58
(7.96%)		 00:00:00
(0.00%)		 162:21:58
(16.32%)		 85:30:22
(30.70%)		 54:18:09
(22.75%)		 -68:21:44
(0.00%)		 90:11:42
(37.78%)		 00:00:00
(N/A)











Camera status (2025/11/21)



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