PRIME Observation Log 2025/12/14

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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: 2025/12/14
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 117.00005 +- 0.00172 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:04:54
Morning 04:58:26
Science Observation
(Sun altitude < -10°)
Start 20:30:37
End 04:32:43
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 08:02:40 08:02:06 1.001
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 08:02:40 08:02:06 1.001


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 400 00:19:04 00:51:38 0.369
NASA 2320 01:50:35 04:42:06 0.392
SAAO 624 00:29:44 01:06:51 0.445
OU 624 00:29:44 01:06:51 0.445
ABC 624 00:29:44 01:06:51 0.445


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 400 00:19:04 00:51:38 0.369
ToO 1696 01:20:50 03:35:15 0.376
offset_all_sky_grid 2496 01:58:58 04:27:24 0.445


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 400 00:19:04 00:51:38 0.369
field13819_test 56 00:02:40 00:28:03 0.095
field13819 40 00:01:54 00:04:37 0.412
field15715 40 00:01:54 00:04:20 0.438
field10742 40 00:01:54 00:04:43 0.404
field10743 40 00:01:54 00:04:06 0.463
field11045 40 00:01:54 00:03:52 0.491
field11653 40 00:01:54 00:03:52 0.491
field12268 40 00:01:54 00:04:06 0.463
field11048 40 00:01:54 00:04:20 0.438
field9861 40 00:01:54 00:04:48 0.396
field10157 40 00:01:54 00:03:52 0.491
field11355 40 00:01:54 00:04:15 0.448
field16046 40 00:01:54 00:04:37 0.412
field9574 40 00:01:54 00:04:12 0.453
field15731 40 00:01:54 00:04:32 0.420
field16048 40 00:01:54 00:04:23 0.434
field11057 40 00:01:54 00:04:06 0.463
field13211 40 00:01:54 00:03:50 0.497
field12281 40 00:01:54 00:04:01 0.474
field9289 40 00:01:54 00:04:15 0.448
field9579 40 00:01:54 00:04:04 0.469
field13842 40 00:01:54 00:04:23 0.434
field15107 40 00:01:54 00:04:43 0.404
field22812 40 00:01:54 00:04:46 0.400
field10769 40 00:01:54 00:04:09 0.458
field11983 40 00:01:54 00:04:09 0.458
field13537 40 00:01:54 00:04:26 0.429
field16066 40 00:01:54 00:04:18 0.443
field11990 40 00:01:54 00:04:23 0.434
field16069 40 00:01:54 00:04:12 0.453
field15121 40 00:01:54 00:04:20 0.438
field13859 40 00:01:54 00:03:52 0.491
field13547 40 00:01:54 00:04:01 0.474
field16075 40 00:01:54 00:04:34 0.416
field22245 40 00:01:54 00:04:37 0.412
field17660 40 00:01:54 00:04:40 0.408
field22828 40 00:01:54 00:04:37 0.412
field13239 40 00:01:54 00:04:43 0.404
field21367 40 00:01:54 00:04:37 0.412
field13257 40 00:01:54 00:06:27 0.296
field14276 60 00:02:51 00:10:07 0.283
field14276_test 20 00:00:57 00:05:54 0.161
offset_field13290_test 16 00:00:45 00:06:30 0.117
offset_field13290 40 00:01:54 00:03:55 0.485
offset_field13291 40 00:01:54 00:03:50 0.497
offset_field13292 40 00:01:54 00:04:18 0.443
offset_field13293 40 00:01:54 00:04:04 0.469
offset_field13294 40 00:01:54 00:03:52 0.491
offset_field13295 40 00:01:54 00:04:06 0.463
offset_field13296 40 00:01:54 00:04:32 0.420
offset_field13297 40 00:01:54 00:04:01 0.474
offset_field13298 40 00:01:54 00:04:04 0.469
offset_field13299 40 00:01:54 00:03:50 0.497
offset_field13300 40 00:01:54 00:04:20 0.438
offset_field13301 40 00:01:54 00:03:55 0.485
offset_field13302 40 00:01:54 00:04:06 0.463
offset_field13303 40 00:01:54 00:04:04 0.469
offset_field13304 40 00:01:54 00:04:12 0.453
offset_field13305 40 00:01:54 00:04:20 0.439
offset_field13306 40 00:01:54 00:04:04 0.469
offset_field13307 40 00:01:54 00:04:18 0.443
offset_field13308 40 00:01:54 00:03:52 0.491
offset_field13309 40 00:01:54 00:04:18 0.443
offset_field13310 40 00:01:54 00:03:52 0.492
offset_field13311 40 00:01:54 00:04:21 0.438
offset_field13312 40 00:01:54 00:04:06 0.463
offset_field13313 40 00:01:54 00:04:32 0.420
offset_field13314 40 00:01:54 00:03:50 0.497
offset_field13315 40 00:01:54 00:04:23 0.434
offset_field13316 40 00:01:54 00:03:52 0.491
offset_field13317 40 00:01:54 00:04:12 0.453
offset_field13318 40 00:01:54 00:04:06 0.463
offset_field13319 40 00:01:54 00:04:06 0.463
offset_field13320 40 00:01:54 00:04:04 0.469
offset_field13321 40 00:01:54 00:04:23 0.434
offset_field13323 40 00:01:54 00:03:52 0.491
offset_field13324 40 00:01:54 00:03:50 0.497
offset_field13325 40 00:01:54 00:04:26 0.429
offset_field13326 40 00:01:54 00:04:09 0.458
offset_field13327 40 00:01:54 00:03:52 0.491
offset_field13328 40 00:01:54 00:04:06 0.463
offset_field13329 40 00:01:54 00:04:48 0.396
offset_field13330 40 00:01:54 00:04:09 0.458
offset_field13331 40 00:01:54 00:03:52 0.491
offset_field13332 40 00:01:54 00:04:09 0.458
offset_field13333 40 00:01:54 00:04:09 0.458
offset_field13334 40 00:01:54 00:04:12 0.453
offset_field13335 40 00:01:54 00:04:06 0.463
offset_field13336 40 00:01:54 00:04:18 0.443
offset_field13337 40 00:01:54 00:04:04 0.469
offset_field13338 40 00:01:54 00:04:34 0.416
offset_field13339 40 00:01:54 00:04:18 0.443
offset_field13340 40 00:01:54 00:04:14 0.449
offset_field13341 40 00:01:54 00:04:21 0.438
offset_field13342 40 00:01:54 00:04:51 0.392
offset_field13343 40 00:01:54 00:03:50 0.497
offset_field13344 40 00:01:54 00:04:06 0.463
offset_field13345 40 00:01:54 00:04:18 0.443
offset_field13346 40 00:01:54 00:04:15 0.448
offset_field13347 40 00:01:54 00:04:34 0.416
offset_field13348 40 00:01:54 00:05:00 0.381
offset_field13636 40 00:01:54 00:04:15 0.448
offset_field13637 40 00:01:54 00:04:15 0.448
offset_field13638 40 00:01:54 00:03:50 0.497
offset_field13639 40 00:01:54 00:05:53 0.324










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 67:25:41 113:29:57 0.594

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 2068:56:52 1046:02:21 1022:54:31 286:24:51 245:29:53 245:29:53 245:29:53 239:28:48
Observed 2000:42:57
(96.70%)		 1046:02:21
(100.00%)		 954:40:35
(93.33%)		 219:42:18
(76.71%)		 211:07:27
(86.00%)		 344:11:05
(140.20%)		 179:39:43
(73.18%)		 239:28:48
(N/A)
Remaining 68:13:55
(3.30%)		 00:00:00
(0.00%)		 68:13:55
(6.67%)		 66:42:33
(23.29%)		 34:22:25
(14.00%)		 -99:18:48
(0.00%)		 65:50:09
(26.82%)		 00:00:00
(N/A)











Camera status (2025/12/14)



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