PRIME Observation Log 2025/11/18

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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: 2025/11/18
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 116.99999 +- 0.00195 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:42:24
Morning 05:01:25
Science Observation
(Sun altitude < -10°)
Start 20:06:46
End 04:37:03
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:06:46
End 20:17:09


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:06:46 08:30:16 0.836
GB Time 00:00:00 00:10:23 0.000
Non-GB Time 07:06:46 08:19:53 0.854


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 280 00:13:20 00:33:19 0.401
NASA 2352 01:52:06 03:33:31 0.525
SAAO 588 00:28:01 01:11:04 0.394
OU 588 00:28:01 01:11:04 0.394
ABC 588 00:28:01 01:11:04 0.394


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 280 00:13:20 00:33:19 0.401
ToO 1764 01:24:05 02:22:26 0.590
all_sky_grid 2352 01:52:06 04:44:19 0.394


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 280 00:13:20 00:33:19 0.401
field16358_test 4 00:00:11 00:01:07 0.169
field16358 110 00:05:14 00:08:13 0.638
field12590 110 00:05:14 00:08:10 0.641
field9879 110 00:05:14 00:09:31 0.550
field7098 110 00:05:14 00:08:30 0.617
field6576 330 00:15:43 00:27:50 0.565
field6326 110 00:05:14 00:10:27 0.501
field3027 110 00:05:14 00:08:10 0.641
field4663 110 00:05:14 00:08:20 0.628
field17347 40 00:01:54 00:05:09 0.369
field17055 40 00:01:54 00:04:44 0.402
field17054 40 00:01:54 00:04:50 0.394
field17053 40 00:01:54 00:04:50 0.394
field17052 40 00:01:54 00:04:47 0.398
field17051 40 00:01:54 00:04:50 0.394
field17050 40 00:01:54 00:04:50 0.394
field17049 40 00:01:54 00:04:50 0.394
field17048 40 00:01:54 00:04:47 0.398
field17047 40 00:01:54 00:04:47 0.398
field17046 40 00:01:54 00:04:50 0.394
field17045 40 00:01:54 00:04:44 0.402
field17044 40 00:01:54 00:04:44 0.402
field17043 40 00:01:54 00:04:47 0.398
field17042 40 00:01:54 00:04:47 0.398
field17041 40 00:01:54 00:04:50 0.394
field17040 40 00:01:54 00:05:57 0.320
field17039 40 00:01:54 00:04:47 0.398
field17038 40 00:01:54 00:04:44 0.402
field17037 40 00:01:54 00:04:52 0.391
field17036 40 00:01:54 00:04:50 0.394
field17035 40 00:01:54 00:04:47 0.398
field17034 40 00:01:54 00:04:44 0.402
field17033 40 00:01:54 00:04:47 0.398
field17032 40 00:01:54 00:04:47 0.398
field17031 40 00:01:54 00:04:44 0.402
field17030 40 00:01:54 00:04:44 0.402
field17029 40 00:01:54 00:04:44 0.402
field17028 40 00:01:54 00:04:50 0.394
field14821 40 00:01:54 00:05:18 0.360
field18625 40 00:01:54 00:04:47 0.398
field18935 40 00:01:54 00:04:47 0.398
field17370 40 00:01:54 00:04:47 0.398
field17369 40 00:01:54 00:04:44 0.402
field17368 40 00:01:54 00:04:44 0.402
field17367 40 00:01:54 00:04:50 0.394
field17366 40 00:01:54 00:04:47 0.398
field17365 40 00:01:54 00:04:50 0.394
field17364 40 00:01:54 00:04:47 0.398
field17363 40 00:01:54 00:04:50 0.394
field19545 40 00:01:54 00:04:50 0.394
field17361 40 00:01:54 00:04:44 0.402
field17360 40 00:01:54 00:04:44 0.402
field17359 40 00:01:54 00:04:44 0.402
field17358 40 00:01:54 00:04:50 0.394
field19847 40 00:01:54 00:04:52 0.391
field17356 40 00:01:54 00:04:44 0.402
field17355 40 00:01:54 00:04:44 0.402
field17354 40 00:01:54 00:04:44 0.402
field17353 40 00:01:54 00:04:50 0.394
field17352 40 00:01:54 00:04:44 0.402
field17351 40 00:01:54 00:04:52 0.391
field20146 40 00:01:54 00:05:01 0.380
field14822 40 00:01:54 00:04:52 0.391
field17348 40 00:01:54 00:04:47 0.398
field17346 40 00:01:54 00:04:47 0.398
field17345 40 00:01:54 00:04:47 0.398
field17344 40 00:01:54 00:04:47 0.398
field17343 32 00:01:31 00:04:00 0.380
field13971 110 00:05:14 00:08:13 0.638
field16818 110 00:05:14 00:08:10 0.641
field15868 110 00:05:14 00:08:10 0.641
field16817 110 00:05:14 00:08:07 0.645
field17133 110 00:05:14 00:08:07 0.645
field17763 110 00:05:14 00:11:12 0.468










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 92:14:10 157:38:52 0.585

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 2027:57:34 1045:35:45 982:21:48 275:03:42 235:46:02 235:46:02 235:46:02 220:54:58
Observed 1852:54:58
(91.37%)		 1045:33:03
(100.00%)		 807:21:54
(82.19%)		 187:11:30
(68.05%)		 178:36:40
(75.76%)		 298:50:36
(126.75%)		 142:43:07
(60.53%)		 220:54:58
(N/A)
Remaining 175:02:36
(8.63%)		 00:02:42
(0.00%)		 174:59:53
(17.81%)		 87:52:11
(31.95%)		 57:09:21
(24.24%)		 -64:55:26
(0.00%)		 93:02:55
(39.47%)		 00:00:00
(N/A)











Camera status (2025/11/18)



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