PRIME Observation Log 2025/12/20

Return to index
Previous day Next day

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: 2025/12/20
Local observer:
Remote observer: Togo
Weather: Clear
Comment:
Detector Temperature: 116.99868 +- 0.01767 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:08:29
Morning 05:00:48
Science Observation
(Sun altitude < -10°)
Start 20:34:16
End 04:35:01
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 05:24:58 08:00:45 0.676
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 05:24:58 08:00:45 0.676


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 160 00:07:37 00:17:31 0.435
NASA 898 00:42:48 01:45:05 0.407
SAAO 650 00:30:59 01:13:17 0.423
OU 650 00:30:59 01:13:17 0.423
ABC 650 00:30:59 01:13:17 0.423


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 160 00:07:37 00:17:31 0.435
ToO 248 00:11:49 00:31:47 0.372
offset_all_sky_grid 2600 02:03:56 04:53:11 0.423


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT ZO 160 00:07:37 00:17:31 0.435
field10145_test 88 00:04:11 00:12:23 0.338
field10145 40 00:01:54 00:04:01 0.473
field13504 40 00:01:54 00:04:07 0.463
field13506 40 00:01:54 00:04:06 0.465
field13819 40 00:01:54 00:07:09 0.267
offset_field10506_test 104 00:04:57 00:21:03 0.235
offset_field10506 40 00:01:54 00:04:06 0.464
offset_field10507 40 00:01:54 00:03:58 0.480
offset_field10508 40 00:01:54 00:04:12 0.453
offset_field10509 40 00:01:54 00:03:52 0.491
offset_field10510 40 00:01:54 00:03:52 0.491
offset_field10511 40 00:01:54 00:04:26 0.429
offset_field10512 40 00:01:54 00:04:17 0.444
offset_field10513 40 00:01:54 00:05:50 0.326
offset_field5163 40 00:01:54 00:04:04 0.469
offset_field5164 40 00:01:54 00:05:08 0.371
offset_field12978 40 00:01:54 00:04:23 0.434
offset_field12979 40 00:01:54 00:04:04 0.469
offset_field12980 40 00:01:54 00:04:06 0.463
offset_field12981 40 00:01:54 00:04:06 0.463
offset_field12982 40 00:01:54 00:04:04 0.469
offset_field12983 40 00:01:54 00:04:23 0.434
offset_field12984 40 00:01:54 00:04:23 0.434
offset_field12985 40 00:01:54 00:04:12 0.453
offset_field13288 40 00:01:54 00:04:35 0.416
offset_field13289 40 00:01:54 00:04:29 0.425
offset_field13600 40 00:01:54 00:04:26 0.429
offset_field13601 40 00:01:54 00:04:40 0.408
offset_field13602 40 00:01:54 00:04:04 0.469
offset_field13603 40 00:01:54 00:03:52 0.491
offset_field13604 40 00:01:54 00:04:12 0.453
offset_field13605 40 00:01:54 00:04:20 0.438
offset_field13606 40 00:01:54 00:03:50 0.497
offset_field13607 40 00:01:54 00:04:34 0.416
offset_field13608 40 00:01:54 00:04:09 0.458
offset_field13609 40 00:01:54 00:04:26 0.429
offset_field13610 40 00:01:54 00:04:37 0.412
offset_field13611 40 00:01:54 00:04:09 0.458
offset_field13612 40 00:01:54 00:04:04 0.469
offset_field13613 40 00:01:54 00:04:01 0.474
offset_field13614 40 00:01:54 00:04:07 0.463
offset_field13615 40 00:01:54 00:04:29 0.425
offset_field13616 40 00:01:54 00:04:23 0.434
offset_field13617 40 00:01:54 00:04:06 0.463
offset_field13618 40 00:01:54 00:04:20 0.438
offset_field13619 40 00:01:54 00:04:09 0.458
offset_field13620 40 00:01:54 00:04:06 0.463
offset_field13621 40 00:01:54 00:04:06 0.463
offset_field13622 40 00:01:54 00:04:12 0.453
offset_field13623 40 00:01:54 00:04:06 0.463
offset_field13624 40 00:01:54 00:04:04 0.469
offset_field13625 40 00:01:54 00:04:20 0.438
offset_field13626 40 00:01:54 00:03:52 0.491
offset_field13627 40 00:01:54 00:04:04 0.469
offset_field13628 40 00:01:54 00:04:18 0.443
offset_field13629 56 00:02:40 00:12:16 0.218
offset_field13630 40 00:01:54 00:04:01 0.475
offset_field13631 40 00:01:54 00:03:47 0.503
offset_field13632 40 00:01:54 00:05:59 0.318
offset_field13633 40 00:01:54 00:04:23 0.434
offset_field13634 40 00:01:54 00:03:52 0.491
offset_field13635 40 00:01:54 00:03:55 0.485
offset_field13640 40 00:01:54 00:04:07 0.463
offset_field13641 40 00:01:54 00:03:49 0.498
offset_field13642 40 00:01:54 00:03:50 0.497
offset_field13643 40 00:01:54 00:04:26 0.429
offset_field13644 40 00:01:54 00:04:12 0.453
offset_field13645 40 00:01:54 00:04:22 0.435










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 97:42:53 161:36:47 0.605

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 2075:10:39 1046:02:21 1029:08:17 288:09:31 246:59:35 246:59:35 246:59:35 241:08:24
Observed 2031:00:09
(97.87%)		 1046:02:21
(100.00%)		 984:57:47
(95.71%)		 226:20:29
(78.55%)		 218:23:58
(88.42%)		 353:55:25
(143.29%)		 186:17:54
(75.43%)		 241:08:24
(N/A)
Remaining 44:10:30
(2.13%)		 00:00:00
(0.00%)		 44:10:30
(4.29%)		 61:49:02
(21.45%)		 28:35:37
(11.58%)		 -107:04:10
(0.00%)		 60:41:41
(24.57%)		 00:00:00
(N/A)











Camera status (2025/12/20)



Return to index
Previous day Next day