PRIME Observation Log 2025/12/27

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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: 2025/12/27
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 117.76285 +- 0.42600 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:11:27
Morning 05:04:51
Science Observation
(Sun altitude < -10°)
Start 20:37:11
End 04:39:08
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 05:37:24 08:01:57 0.700
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 05:37:24 08:01:57 0.700


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.)
SAAO 706 00:33:39 01:24:21 0.399
OU 706 00:33:39 01:24:21 0.399
NASA 706 00:33:39 01:24:21 0.399
ABC 706 00:33:39 01:24:21 0.399


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_all_sky_grid 2824 02:14:36 05:37:24 0.399


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_field14829_test 32 00:01:31 00:21:14 0.072
offset_field14829 40 00:01:54 00:03:50 0.497
offset_field14830 40 00:01:54 00:04:26 0.429
offset_field14831 40 00:01:54 00:04:26 0.429
offset_field14832 40 00:01:54 00:04:09 0.458
offset_field14833 40 00:01:54 00:05:25 0.352
offset_field13913 40 00:01:54 00:04:32 0.420
offset_field13914 40 00:01:54 00:04:09 0.458
offset_field13915 40 00:01:54 00:04:06 0.463
offset_field13916 40 00:01:54 00:04:06 0.463
offset_field13917 40 00:01:54 00:03:47 0.503
offset_field13918 40 00:01:54 00:03:51 0.495
offset_field13919 40 00:01:54 00:04:19 0.440
offset_field13920 40 00:01:54 00:04:06 0.463
offset_field13921 40 00:01:54 00:04:23 0.434
offset_field13922 40 00:01:54 00:04:04 0.469
offset_field13923 40 00:01:54 00:04:05 0.465
offset_field13924_test 8 00:00:22 00:10:09 0.038
offset_field13924 40 00:01:54 00:04:22 0.435
offset_field13925 40 00:01:54 00:04:16 0.446
offset_field13926 40 00:01:54 00:04:16 0.445
offset_field13927 40 00:01:54 00:04:32 0.420
offset_field13928 40 00:01:54 00:04:12 0.453
offset_field13929 40 00:01:54 00:03:52 0.491
offset_field13930 40 00:01:54 00:04:12 0.453
offset_field13931 40 00:01:54 00:07:59 0.239
offset_field14541_test 24 00:01:08 00:10:24 0.110
offset_field14541 40 00:01:54 00:04:09 0.458
offset_field14542 40 00:01:54 00:04:26 0.429
offset_field14543 40 00:01:54 00:05:25 0.352
offset_field14544 40 00:01:54 00:03:47 0.503
offset_field14545 40 00:01:54 00:03:51 0.495
offset_field14546 40 00:01:54 00:04:22 0.436
offset_field14547 40 00:01:54 00:03:56 0.483
offset_field14548 40 00:01:54 00:04:08 0.460
offset_field14549 40 00:01:54 00:04:29 0.425
offset_field14550 40 00:01:54 00:03:50 0.497
offset_field14551 40 00:01:54 00:04:09 0.458
offset_field14552 40 00:01:54 00:03:56 0.483
offset_field14553 40 00:01:54 00:05:04 0.375
offset_field14554 40 00:01:54 00:04:09 0.458
offset_field14555 40 00:01:54 00:03:52 0.491
offset_field14556 40 00:01:54 00:03:50 0.497
offset_field14557 40 00:01:54 00:04:48 0.396
offset_field14558 40 00:01:54 00:03:52 0.491
offset_field14559 40 00:01:54 00:03:47 0.503
offset_field14560 40 00:01:54 00:04:29 0.425
offset_field14561 40 00:01:54 00:04:23 0.434
offset_field14562 40 00:01:54 00:03:47 0.503
offset_field14563 40 00:01:54 00:04:13 0.451
offset_field14564 40 00:01:54 00:04:25 0.431
offset_field14565 40 00:01:54 00:03:50 0.497
offset_field14566 40 00:01:54 00:04:12 0.453
offset_field14567 40 00:01:54 00:04:29 0.425
offset_field14568 40 00:01:54 00:04:18 0.443
offset_field14569 40 00:01:54 00:04:29 0.425
offset_field14570 40 00:01:54 00:04:48 0.396
offset_field14571 40 00:01:54 00:04:12 0.453
offset_field14572 40 00:01:54 00:04:09 0.458
offset_field14573 40 00:01:54 00:03:55 0.485
offset_field14574 40 00:01:54 00:04:06 0.463
offset_field14575 40 00:01:54 00:04:26 0.429
offset_field14576 40 00:01:54 00:04:29 0.425
offset_field14577 40 00:01:54 00:03:52 0.491
offset_field14578 40 00:01:54 00:04:09 0.458
offset_field14579 40 00:01:54 00:04:10 0.457
offset_field14580 40 00:01:54 00:04:39 0.409
offset_field14581 40 00:01:54 00:03:50 0.497
offset_field14582 40 00:01:54 00:04:12 0.453
offset_field14583 40 00:01:54 00:04:12 0.453
offset_field14584 40 00:01:54 00:03:52 0.491
offset_field14585 40 00:01:54 00:04:08 0.460










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 125:35:53 217:45:11 0.577

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 2074:59:28 1046:02:21 1028:57:07 288:06:23 246:56:54 246:56:54 246:56:54 241:49:06
Observed 2058:53:10
(99.22%)		 1046:02:21
(100.00%)		 1012:50:48
(98.43%)		 230:56:02
(80.16%)		 224:27:08
(90.89%)		 366:34:10
(148.44%)		 190:53:27
(77.30%)		 241:49:06
(N/A)
Remaining 16:06:18
(0.78%)		 00:00:00
(0.00%)		 16:06:18
(1.57%)		 57:10:21
(19.84%)		 22:29:46
(9.11%)		 -120:22:45
(0.00%)		 56:03:27
(22.70%)		 00:00:00
(N/A)











Camera status (2025/12/27)



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