PRIME Observation Log 2025/12/16

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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: 2025/12/16
Local observer:
Remote observer: Ryunosuke, dsuzuki
Weather: clear
Comment:
Detector Temperature: 117.00006 +- 0.00077 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:06:12
Morning 04:59:06
Science Observation
(Sun altitude < -10°)
Start 20:31:56
End 04:33:21
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 05:31:39 08:01:24 0.689
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 05:31:39 08:01:24 0.689


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.)
OU 900 00:42:54 01:34:23 0.455
SAAO 812 00:38:42 01:19:05 0.489
NASA 812 00:38:42 01:19:05 0.489
ABC 812 00:38:42 01:19:05 0.489


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_all_sky_grid 3336 02:39:00 05:31:39 0.479


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_field12629_test 4 00:00:11 00:01:29 0.127
offset_field12629 40 00:01:54 00:03:52 0.491
offset_field12630 40 00:01:54 00:04:01 0.474
offset_field12631 40 00:01:54 00:03:52 0.491
offset_field12632 40 00:01:54 00:03:50 0.497
offset_field12633 40 00:01:54 00:03:50 0.497
offset_field12634 40 00:01:54 00:03:50 0.497
offset_field12635 40 00:01:54 00:03:52 0.491
offset_field12636 40 00:01:54 00:03:52 0.491
offset_field12637 40 00:01:54 00:03:50 0.497
offset_field12638 40 00:01:54 00:03:52 0.491
offset_field12639 40 00:01:54 00:03:58 0.480
offset_field12640 40 00:01:54 00:05:05 0.374
offset_field6130 40 00:01:54 00:03:47 0.503
offset_field5882 40 00:01:54 00:03:47 0.503
offset_field5883 40 00:01:54 00:03:47 0.503
offset_field5884 40 00:01:54 00:03:47 0.503
offset_field5885 40 00:01:54 00:03:47 0.503
offset_field5886 40 00:01:54 00:03:50 0.497
offset_field6131 40 00:01:54 00:03:47 0.503
offset_field6132 40 00:01:54 00:03:47 0.503
offset_field6133 40 00:01:54 00:03:50 0.497
offset_field6134 40 00:01:54 00:04:01 0.474
offset_field6135 40 00:01:54 00:03:52 0.491
offset_field6136 40 00:01:54 00:03:47 0.503
offset_field6137 40 00:01:54 00:03:50 0.497
offset_field6138 40 00:01:54 00:03:50 0.497
offset_field6139 40 00:01:54 00:03:47 0.503
offset_field6140 40 00:01:54 00:03:47 0.503
offset_field6141 40 00:01:54 00:03:47 0.503
offset_field6142 40 00:01:54 00:03:47 0.503
offset_field6143 40 00:01:54 00:03:47 0.503
offset_field6144 40 00:01:54 00:03:47 0.503
offset_field6145 40 00:01:54 00:03:47 0.503
offset_field6146 40 00:01:54 00:03:47 0.503
offset_field6147 40 00:01:54 00:03:47 0.503
offset_field6148 40 00:01:54 00:03:47 0.503
offset_field6149 40 00:01:54 00:03:58 0.480
offset_field6384 40 00:01:54 00:03:50 0.497
offset_field6385 40 00:01:54 00:03:47 0.503
offset_field6386 40 00:01:54 00:03:50 0.497
offset_field6387 40 00:01:54 00:03:47 0.503
offset_field6388 40 00:01:54 00:03:50 0.497
offset_field6389 40 00:01:54 00:03:47 0.503
offset_field6390 40 00:01:54 00:03:47 0.503
offset_field6391 40 00:01:54 00:03:47 0.503
offset_field6392 40 00:01:54 00:03:47 0.503
offset_field6393 40 00:01:54 00:03:47 0.503
offset_field6394 40 00:01:54 00:03:47 0.503
offset_field6395 40 00:01:54 00:03:50 0.497
offset_field6396 40 00:01:54 00:03:47 0.503
offset_field6397 40 00:01:54 00:03:47 0.503
offset_field6398 40 00:01:54 00:03:50 0.497
offset_field6399 40 00:01:54 00:03:50 0.497
offset_field6400 40 00:01:54 00:03:50 0.497
offset_field6401 40 00:01:54 00:03:50 0.497
offset_field6402 40 00:01:54 00:03:50 0.497
offset_field6403 40 00:01:54 00:03:50 0.497
offset_field6404 40 00:01:54 00:03:47 0.503
offset_field6405 40 00:01:54 00:03:50 0.497
offset_field6406 40 00:01:54 00:03:47 0.503
offset_field6407 40 00:01:54 00:03:47 0.503
offset_field6408 40 00:01:54 00:03:50 0.497
offset_field6409 40 00:01:54 00:03:47 0.503
offset_field6410 40 00:01:54 00:03:50 0.497
offset_field6411 40 00:01:54 00:03:52 0.491
offset_field6412 40 00:01:54 00:03:50 0.497
offset_field6413 40 00:01:54 00:03:50 0.497
offset_field6414 40 00:01:54 00:03:50 0.497
offset_field6415 40 00:01:54 00:03:47 0.503
offset_field6416 40 00:01:54 00:03:47 0.503
offset_field6417 40 00:01:54 00:03:47 0.503
offset_field6418 40 00:01:54 00:03:50 0.497
offset_field6419 40 00:01:54 00:03:47 0.503
offset_field6420 40 00:01:54 00:03:50 0.497
offset_field6421 40 00:01:54 00:03:47 0.503
offset_field6422 40 00:01:54 00:03:50 0.497
offset_field6423 40 00:01:54 00:03:50 0.497
offset_field6424 40 00:01:54 00:03:50 0.497
offset_field6425 40 00:01:54 00:03:50 0.497
offset_field6426 40 00:01:54 00:03:47 0.503
offset_field6427 44 00:02:05 00:07:39 0.274
off_field6427_focustest 88 00:04:11 00:15:17 0.274










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 80:54:06 129:33:05 0.624

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 2074:23:43 1046:02:21 1028:21:22 287:56:23 246:48:19 246:48:19 246:48:19 240:10:57
Observed 2014:11:22
(97.10%)		 1046:02:21
(100.00%)		 968:09:00
(94.15%)		 223:00:35
(77.45%)		 214:41:02
(86.99%)		 347:29:22
(140.79%)		 182:58:00
(74.13%)		 240:10:57
(N/A)
Remaining 60:12:21
(2.90%)		 00:00:00
(0.00%)		 60:12:21
(5.85%)		 64:55:47
(22.55%)		 32:07:17
(13.01%)		 -101:18:57
(0.00%)		 63:50:19
(25.87%)		 00:00:00
(N/A)











Camera status (2025/12/16)



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