PRIME Observation Log 2025/12/19

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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: 2025/12/19
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 116.99996 +- 0.00174 K
ImageAcquisitionErrors occurred 2 times @
2025-12-19 21:51:37 SAT
2025-12-19 23:31:17 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:07:57
Morning 05:00:20
Science Observation
(Sun altitude < -10°)
Start 20:33:44
End 04:34:33
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 06:34:41 08:00:49 0.821
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:34:41 08:00:49 0.821


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.)
NASA 849 00:40:28 01:48:14 0.374
CALIB 192 00:09:09 00:29:08 0.314
SAAO 757 00:36:05 01:35:28 0.378
OU 757 00:36:05 01:35:28 0.378
ABC 757 00:36:05 01:35:28 0.378


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
ToO 92 00:04:23 00:12:45 0.344
offset_all_sky_grid 3028 02:24:20 06:21:55 0.378
TWILIGHT 192 00:09:09 00:29:08 0.314


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field10440_test 12 00:00:34 00:02:57 0.193
field10440 40 00:01:54 00:04:23 0.434
field15715 40 00:01:54 00:05:24 0.353
offset_field12323_test 4 00:00:11 00:05:00 0.038
offset_field12323 40 00:01:54 00:04:40 0.408
offset_field12324 40 00:01:54 00:04:12 0.453
offset_field12325 40 00:01:54 00:04:18 0.443
offset_field12326 40 00:01:54 00:03:50 0.497
offset_field12327 40 00:01:54 00:04:26 0.429
offset_field12328 40 00:01:54 00:03:53 0.489
offset_field12329 40 00:01:54 00:04:42 0.405
offset_field12330 40 00:01:54 00:08:25 0.226
offset_field12331 40 00:01:54 00:06:09 0.310
offset_field5398 40 00:01:54 00:04:06 0.463
offset_field5399 40 00:01:54 00:03:50 0.497
offset_field5400 40 00:01:54 00:05:00 0.381
offset_field12668 40 00:01:54 00:04:20 0.438
offset_field12669 40 00:01:54 00:03:47 0.503
offset_field12670 40 00:01:54 00:03:47 0.503
offset_field12671 40 00:01:54 00:04:23 0.434
offset_field12672 40 00:01:54 00:04:09 0.458
offset_field12673 40 00:01:54 00:04:23 0.434
offset_field12674 40 00:01:54 00:04:26 0.429
offset_field12675 40 00:01:54 00:03:52 0.491
offset_field12676 40 00:01:54 00:03:50 0.497
offset_field12677 40 00:01:54 00:03:50 0.497
offset_field12678 40 00:01:54 00:04:01 0.474
offset_field12679 40 00:01:54 00:04:09 0.458
offset_field12680 40 00:01:54 00:04:06 0.463
offset_field12681 40 00:01:54 00:04:06 0.463
offset_field12682 40 00:01:54 00:04:04 0.469
offset_field12683 40 00:01:54 00:04:37 0.412
offset_field12684 40 00:01:54 00:03:50 0.496
offset_field12685 40 00:01:54 00:04:20 0.440
offset_field12686 40 00:01:54 00:10:03 0.190
offset_field12687 40 00:01:54 00:03:50 0.497
offset_field12688 40 00:01:54 00:04:13 0.452
offset_field12689 40 00:01:54 00:04:06 0.465
offset_field12690 40 00:01:54 00:04:09 0.458
offset_field12691 40 00:01:54 00:04:09 0.458
offset_field12692 40 00:01:54 00:03:50 0.497
offset_field12693 40 00:01:54 00:03:50 0.497
offset_field12694 40 00:01:54 00:03:53 0.490
offset_field12695 40 00:01:54 00:04:34 0.417
offset_field12696 40 00:01:54 00:03:47 0.503
offset_field12697 40 00:01:54 00:04:23 0.434
offset_field12698 40 00:01:54 00:04:20 0.438
offset_field12699 40 00:01:54 00:03:52 0.491
offset_field12700 40 00:01:54 00:04:57 0.385
offset_field12701 44 00:02:05 00:05:50 0.359
offset_field12702 40 00:01:54 00:04:06 0.463
offset_field12703 40 00:01:54 00:04:06 0.463
offset_field12704 40 00:01:54 00:04:23 0.434
offset_field12705 40 00:01:54 00:04:54 0.388
offset_field12706 40 00:01:54 00:03:50 0.497
offset_field12707 40 00:01:54 00:04:34 0.416
offset_field12708 80 00:03:48 00:20:08 0.189
offset_field12709 40 00:01:54 00:03:56 0.485
offset_field12710 40 00:01:54 00:04:43 0.403
offset_field12711 40 00:01:54 00:04:29 0.425
offset_field12712 40 00:01:54 00:04:42 0.405
offset_field12713 40 00:01:54 00:03:52 0.491
offset_field12714 40 00:01:54 00:04:26 0.429
offset_field12715 40 00:01:54 00:03:56 0.484
offset_field12716 40 00:01:54 00:04:06 0.465
offset_field12717 40 00:01:54 00:03:47 0.503
offset_field12718 40 00:01:54 00:05:02 0.379
offset_field12719_test 60 00:02:51 00:33:37 0.085
offset_field12719 40 00:01:54 00:05:08 0.371
offset_field12720 40 00:01:54 00:03:50 0.497
offset_field12721 40 00:01:54 00:03:52 0.491
offset_field12722 40 00:01:54 00:03:52 0.491
offset_field12723 40 00:01:54 00:03:55 0.485
offset_field12724 40 00:01:54 00:03:50 0.497
offset_field12725 40 00:01:54 00:03:52 0.491
offset_field12726 40 00:01:54 00:03:55 0.485
offset_field12727 40 00:01:54 00:03:47 0.503
offset_field12728 40 00:01:54 00:12:25 0.153
FLAT_test OY 12 00:00:34 00:12:51 0.044
FLAT OY 180 00:08:34 00:16:16 0.527










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 92:17:54 153:36:02 0.601

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 2073:46:03 1046:02:21 1027:43:41 287:45:50 246:39:17 246:39:17 246:39:17 240:50:52
Observed 2025:35:10
(97.68%)		 1046:02:21
(100.00%)		 979:32:48
(95.31%)		 225:07:11
(78.23%)		 217:10:40
(88.05%)		 352:10:20
(142.78%)		 185:04:36
(75.03%)		 240:50:52
(N/A)
Remaining 48:10:53
(2.32%)		 00:00:00
(0.00%)		 48:10:53
(4.69%)		 62:38:38
(21.77%)		 29:28:36
(11.95%)		 -106:28:57
(0.00%)		 61:34:40
(24.97%)		 00:00:00
(N/A)











Camera status (2025/12/19)



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