PRIME Observation Log 2025/12/06

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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: 2025/12/06
Local observer:
Remote observer: Suzuki, Ryusei
Weather: clear --> high humidity
Comment:
Detector Temperature: 117.00003 +- 0.00072 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:58:55
Morning 04:57:02
Science Observation
(Sun altitude < -10°)
Start 20:24:22
End 04:31:35
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 06:26:15 08:07:13 0.793
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:26:15 08:07:13 0.793


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 272 00:12:57 00:29:18 0.442
SAAO 884 00:42:08 01:36:33 0.436
OU 884 00:42:08 01:36:33 0.436
NASA 884 00:42:08 01:36:33 0.436
ABC 884 00:42:08 01:36:33 0.436


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 272 00:12:57 00:29:18 0.442
offset_all_sky_grid 3536 02:48:32 06:26:15 0.436


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OH 8 00:00:22 00:03:47 0.101
FLAT OH 264 00:12:35 00:25:30 0.493
offset_field16064_test 28 00:01:20 00:07:33 0.177
offset_field16064 40 00:01:54 00:03:52 0.491
offset_field16066 40 00:01:54 00:04:34 0.416
offset_field16067 40 00:01:54 00:04:18 0.443
offset_field16068 40 00:01:54 00:03:47 0.503
offset_field16069 40 00:01:54 00:03:50 0.497
offset_field16070 40 00:01:54 00:04:09 0.458
offset_field16071 40 00:01:54 00:04:09 0.458
offset_field16072 40 00:01:54 00:04:24 0.433
offset_field16073 40 00:01:54 00:04:48 0.397
offset_field16074 40 00:01:54 00:04:06 0.463
offset_field16075 40 00:01:54 00:04:20 0.438
offset_field16076 40 00:01:54 00:03:52 0.491
offset_field16077 40 00:01:54 00:04:04 0.469
offset_field16078 40 00:01:54 00:04:23 0.434
offset_field16079 40 00:01:54 00:04:20 0.438
offset_field16080 40 00:01:54 00:04:06 0.463
offset_field16081 40 00:01:54 00:04:23 0.434
offset_field16082 40 00:01:54 00:03:50 0.497
offset_field16083 40 00:01:54 00:04:20 0.438
offset_field16084 40 00:01:54 00:04:06 0.463
offset_field16085 40 00:01:54 00:04:20 0.438
offset_field16086 40 00:01:54 00:04:34 0.416
offset_field16087 40 00:01:54 00:04:20 0.438
offset_field16088 40 00:01:54 00:03:47 0.503
offset_field16089 40 00:01:54 00:04:09 0.458
offset_field16094 40 00:01:54 00:04:06 0.463
offset_field16095 40 00:01:54 00:04:06 0.463
offset_field16096 40 00:01:54 00:03:53 0.491
offset_field16097 40 00:01:54 00:04:12 0.453
offset_field16098 40 00:01:54 00:04:51 0.392
offset_field8518 40 00:01:54 00:04:04 0.469
offset_field8800 40 00:01:54 00:03:47 0.503
offset_field8801 40 00:01:54 00:04:04 0.469
offset_field8802 40 00:01:54 00:04:34 0.416
offset_field9087 40 00:01:54 00:04:04 0.469
offset_field9088 40 00:01:54 00:04:04 0.469
offset_field9089 40 00:01:54 00:04:06 0.463
offset_field9373 40 00:01:54 00:03:50 0.497
offset_field9374 40 00:01:54 00:03:50 0.497
offset_field9375 40 00:01:54 00:04:35 0.416
offset_field9376 40 00:01:54 00:04:31 0.421
offset_field9377 40 00:01:54 00:04:20 0.438
offset_field9378 40 00:01:54 00:04:12 0.453
offset_field9379 40 00:01:54 00:04:29 0.425
offset_field9380 40 00:01:54 00:04:06 0.463
offset_field9381 40 00:01:54 00:04:29 0.425
offset_field9382 40 00:01:54 00:03:47 0.503
offset_field9383 40 00:01:54 00:04:32 0.420
offset_field9384 40 00:01:54 00:04:15 0.448
offset_field9385 40 00:01:54 00:03:47 0.503
offset_field9386 40 00:01:54 00:04:15 0.448
offset_field9387 40 00:01:54 00:04:04 0.469
offset_field9388 40 00:01:54 00:04:04 0.469
offset_field9389 40 00:01:54 00:04:01 0.474
offset_field9390 40 00:01:54 00:04:32 0.420
offset_field9391 40 00:01:54 00:04:09 0.458
offset_field9392 40 00:01:54 00:04:20 0.438
offset_field9393 40 00:01:54 00:04:06 0.463
offset_field9394 40 00:01:54 00:04:09 0.458
offset_field9395 40 00:01:54 00:04:06 0.463
offset_field9396 40 00:01:54 00:04:04 0.469
offset_field9397 40 00:01:54 00:04:04 0.469
offset_field9398 40 00:01:54 00:04:04 0.469
offset_field9399 40 00:01:54 00:03:50 0.497
offset_field9400 40 00:01:54 00:03:50 0.497
offset_field9401 40 00:01:54 00:04:04 0.469
offset_field9402 40 00:01:54 00:04:01 0.474
offset_field9403 40 00:01:54 00:04:04 0.469
offset_field9404 40 00:01:54 00:03:47 0.503
offset_field9405 40 00:01:54 00:06:38 0.287
offset_field9406 40 00:01:54 00:04:01 0.474
offset_field9407 40 00:01:54 00:04:01 0.474
offset_field9408 40 00:01:54 00:04:04 0.469
offset_field9409 40 00:01:54 00:04:01 0.474
offset_field9410 40 00:01:54 00:04:01 0.474
offset_field9411 40 00:01:54 00:04:04 0.469
offset_field9412 68 00:03:14 00:18:29 0.175
offset_field9413 40 00:01:54 00:03:52 0.491
offset_field9414 40 00:01:54 00:03:50 0.497
offset_field9415 40 00:01:54 00:03:49 0.497
offset_field9416 40 00:01:54 00:06:55 0.276
offset_field9664 40 00:01:54 00:03:58 0.480
offset_field9665 40 00:01:54 00:03:50 0.497
offset_field9666 40 00:01:54 00:03:50 0.497
offset_field9667 40 00:01:54 00:03:50 0.497
offset_field9668 40 00:01:54 00:03:47 0.503
offset_field9669 40 00:01:54 00:04:05 0.465










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 28:27:47 48:57:37 0.581

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 2062:15:08 1046:02:21 1016:12:47 284:32:22 243:53:28 243:53:28 243:53:28 234:41:38
Observed 1961:45:03
(95.13%)		 1046:02:21
(100.00%)		 915:42:41
(90.11%)		 212:44:37
(74.77%)		 204:09:47
(83.71%)		 326:06:13
(133.71%)		 172:42:02
(70.81%)		 234:41:38
(N/A)
Remaining 100:30:05
(4.87%)		 00:00:00
(0.00%)		 100:30:05
(9.89%)		 71:47:44
(25.23%)		 39:43:40
(16.29%)		 -83:47:15
(0.00%)		 71:11:25
(29.19%)		 00:00:00
(N/A)











Camera status (2025/12/06)



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