PRIME Observation Log 2025/12/15

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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: 2025/12/15
Local observer:
Remote observer: Ryunosuke
Weather: clear
Comment:
Detector Temperature: 116.99960 +- 0.00252 K
ImageAcquisitionErrors occurred 4 times @
2025-12-15 22:24:44 SAT
2025-12-15 23:42:25 SAT
2025-12-16 03:06:44 SAT
2025-12-16 03:34:51 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:05:34
Morning 04:58:45
Science Observation
(Sun altitude < -10°)
Start 20:31:18
End 04:33:01
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 07:56:46 08:01:43 0.990
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 07:56:46 08:01:43 0.990


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 452 00:21:32 00:42:08 0.511
SAAO 1066 00:50:48 01:59:11 0.426
OU 1066 00:50:48 01:59:11 0.426
NASA 1066 00:50:48 01:59:11 0.426
ABC 1066 00:50:48 01:59:11 0.426


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 452 00:21:32 00:42:08 0.511
offset_all_sky_grid 4264 03:23:15 07:56:46 0.426


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT ZO 452 00:21:32 00:42:08 0.511
offset_field11092_test 16 00:00:45 00:07:09 0.107
offset_field11092 40 00:01:54 00:04:09 0.458
offset_field11093 40 00:01:54 00:03:50 0.497
offset_field11094 40 00:01:54 00:03:52 0.491
offset_field11095 40 00:01:54 00:03:58 0.480
offset_field11096 40 00:01:54 00:03:50 0.497
offset_field11097 40 00:01:54 00:03:53 0.491
offset_field11098 40 00:01:54 00:04:23 0.434
offset_field11099 40 00:01:54 00:04:09 0.458
offset_field11100 40 00:01:54 00:03:52 0.491
offset_field11101 40 00:01:54 00:03:55 0.485
offset_field11102 40 00:01:54 00:04:06 0.463
offset_field11103 40 00:01:54 00:04:06 0.463
offset_field11104 40 00:01:54 00:04:54 0.388
offset_field11105 40 00:01:54 00:04:29 0.425
offset_field11106 40 00:01:54 00:04:12 0.453
offset_field11107 40 00:01:54 00:04:12 0.453
offset_field11108 40 00:01:54 00:04:09 0.458
offset_field11109 40 00:01:54 00:04:23 0.434
offset_field11110 40 00:01:54 00:03:58 0.480
offset_field11111 40 00:01:54 00:05:09 0.370
offset_field7157 40 00:01:54 00:04:48 0.396
offset_field7158 40 00:01:54 00:04:45 0.400
offset_field6895 40 00:01:54 00:04:15 0.448
offset_field6896 40 00:01:54 00:03:50 0.497
offset_field6897 40 00:01:54 00:03:58 0.480
offset_field6898 40 00:01:54 00:03:56 0.485
offset_field6899 40 00:01:54 00:04:23 0.434
offset_field6900 40 00:01:54 00:04:20 0.439
offset_field6901 48 00:02:17 00:05:59 0.382
offset_field6902 40 00:01:54 00:04:03 0.469
offset_field6903 40 00:01:54 00:04:20 0.438
offset_field7159 40 00:01:54 00:03:47 0.503
offset_field7160 40 00:01:54 00:03:48 0.501
offset_field7161 40 00:01:54 00:04:05 0.465
offset_field7162 40 00:01:54 00:04:18 0.443
offset_field7163 40 00:01:54 00:04:54 0.388
offset_field7164 40 00:01:54 00:04:15 0.448
offset_field7165 40 00:01:54 00:04:04 0.469
offset_field7166 40 00:01:54 00:03:50 0.497
offset_field7167 40 00:01:54 00:04:18 0.443
offset_field7168 40 00:01:54 00:04:04 0.469
offset_field7169 40 00:01:54 00:04:18 0.443
offset_field7170 64 00:03:03 00:17:47 0.171
offset_field7171 40 00:01:54 00:04:37 0.412
offset_field7172 40 00:01:54 00:04:20 0.438
offset_field7173 40 00:01:54 00:04:20 0.438
offset_field7174 40 00:01:54 00:04:20 0.439
offset_field7175 40 00:01:54 00:03:50 0.497
offset_field7176 40 00:01:54 00:03:50 0.497
offset_field7177 40 00:01:54 00:04:51 0.392
offset_field7178 40 00:01:54 00:04:04 0.469
offset_field7179 40 00:01:54 00:04:06 0.463
offset_field7180 40 00:01:54 00:04:04 0.469
offset_field7181 40 00:01:54 00:04:23 0.434
offset_field7182 40 00:01:54 00:04:23 0.434
offset_field7183 40 00:01:54 00:03:50 0.497
offset_field7184 40 00:01:54 00:04:07 0.463
offset_field7185 40 00:01:54 00:04:37 0.413
offset_field7186 40 00:01:54 00:04:01 0.474
offset_field7187 40 00:01:54 00:04:20 0.438
offset_field7188 40 00:01:54 00:03:52 0.491
offset_field7189 40 00:01:54 00:04:01 0.474
offset_field7190 40 00:01:54 00:04:06 0.463
offset_field7191 40 00:01:54 00:04:18 0.443
offset_field7192 40 00:01:54 00:04:21 0.438
offset_field7193 40 00:01:54 00:03:58 0.480
offset_field7194 40 00:01:54 00:04:48 0.396
offset_field7195 40 00:01:54 00:04:04 0.469
offset_field7196 40 00:01:54 00:04:04 0.469
offset_field7197 40 00:01:54 00:03:52 0.491
offset_field7198 40 00:01:54 00:04:09 0.458
offset_field7199 40 00:01:54 00:04:04 0.469
offset_field7200 40 00:01:54 00:03:47 0.503
offset_field7201 40 00:01:54 00:04:18 0.443
offset_field7202 40 00:01:54 00:03:50 0.497
offset_field7203 40 00:01:54 00:05:59 0.319
offset_field7425 40 00:01:54 00:03:52 0.491
offset_field7426 40 00:01:54 00:03:50 0.497
offset_field7427 40 00:01:54 00:04:34 0.416
offset_field7428 40 00:01:54 00:03:50 0.497
offset_field7429 40 00:01:54 00:04:04 0.469
offset_field7430 40 00:01:54 00:04:09 0.458
offset_field7431 40 00:01:54 00:04:15 0.448
offset_field7432 40 00:01:54 00:03:47 0.503
offset_field7433 40 00:01:54 00:04:15 0.448
offset_field7434 40 00:01:54 00:03:58 0.479
offset_field7435 40 00:01:54 00:04:20 0.439
offset_field7436 76 00:03:37 00:12:22 0.293
offset_field7437 40 00:01:54 00:03:47 0.503
offset_field7438 40 00:01:54 00:04:12 0.454
offset_field7439 40 00:01:54 00:04:12 0.452
offset_field7440 40 00:01:54 00:05:14 0.364
offset_field7441 60 00:02:51 00:11:11 0.255
offset_field7442 40 00:01:54 00:03:50 0.497
offset_field7443 40 00:01:54 00:04:20 0.438
offset_field7444 40 00:01:54 00:04:23 0.435
offset_field7445 40 00:01:54 00:04:29 0.424
offset_field7446 40 00:01:54 00:04:04 0.469
offset_field7447 40 00:01:54 00:03:50 0.497
offset_field7448 40 00:01:54 00:03:50 0.497
offset_field7449 40 00:01:54 00:04:04 0.469
offset_field7450 40 00:01:54 00:04:04 0.469
offset_field7451 40 00:01:54 00:04:18 0.443
offset_field7452 40 00:01:54 00:06:40 0.285










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 172:36:33 257:46:16 0.670
Dec 75:22:27 121:31:41 0.620

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 2072:52:46 1046:02:21 1026:50:25 287:30:55 246:26:30 246:26:30 246:26:30 240:10:57
Observed 2008:39:43
(96.90%)		 1046:02:21
(100.00%)		 962:37:21
(93.75%)		 221:41:29
(77.11%)		 213:06:39
(86.48%)		 346:10:17
(140.47%)		 181:38:54
(73.71%)		 240:10:57
(N/A)
Remaining 64:13:03
(3.10%)		 00:00:00
(0.00%)		 64:13:03
(6.25%)		 65:49:25
(22.89%)		 33:19:50
(13.52%)		 -100:16:13
(0.00%)		 64:47:35
(26.29%)		 00:00:00
(N/A)











Camera status (2025/12/15)



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