PRIME Observation Log 2025/12/22

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: 2025/12/22
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 117.54562 +- 0.17232 K
ImageAcquisitionErrors occurred 6 times @
2025-12-22 22:14:37 SAT
2025-12-22 22:26:12 SAT
2025-12-22 23:59:46 SAT
2025-12-23 02:01:29 SAT
2025-12-23 02:08:52 SAT
2025-12-23 04:50:21 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:09:29
Morning 05:01:50
Science Observation
(Sun altitude < -10°)
Start 20:35:16
End 04:36:03
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 04:50:47 08:00:47 0.605
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 04:50:47 08:00:47 0.605


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 2497 01:59:01 04:12:18 0.472
CALIB 108 00:05:08 00:10:38 0.484
SAAO 104 00:04:57 00:12:49 0.387
OU 104 00:04:57 00:12:49 0.387
ABC 104 00:04:57 00:12:49 0.387


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
ToO 2393 01:54:03 03:59:28 0.476
offset_all_sky_grid 416 00:19:49 00:51:18 0.387
TWILIGHT 108 00:05:08 00:10:38 0.484


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
no_grid_test 32 00:01:31 00:10:26 0.146
no_grid 744 00:35:27 01:06:23 0.534
field22287_test 40 00:01:54 00:13:46 0.138
field22287 1577 01:15:10 02:28:52 0.505
offset_field13034_test 16 00:00:45 00:05:34 0.137
offset_field13034 40 00:01:54 00:04:09 0.458
offset_field13035 40 00:01:54 00:04:09 0.458
offset_field13036 40 00:01:54 00:04:12 0.453
offset_field13037 40 00:01:54 00:04:12 0.453
offset_field13646 40 00:01:54 00:04:26 0.429
offset_field13647 40 00:01:54 00:04:09 0.458
offset_field13648 40 00:01:54 00:04:12 0.453
offset_field13649 40 00:01:54 00:03:50 0.497
offset_field13650 40 00:01:54 00:03:50 0.497
offset_field13651 40 00:01:54 00:08:30 0.224
FLAT ZO 108 00:05:08 00:10:38 0.484










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 108:46:27 177:38:19 0.612

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 2078:13:27 1046:02:21 1032:11:06 289:00:42 247:43:27 247:43:27 247:43:27 241:19:02
Observed 2042:03:43
(98.26%)		 1046:02:21
(100.00%)		 996:01:21
(96.50%)		 226:59:54
(78.54%)		 219:26:04
(88.58%)		 362:38:02
(146.39%)		 186:57:19
(75.47%)		 241:19:02
(N/A)
Remaining 36:09:44
(1.74%)		 00:00:00
(0.00%)		 36:09:44
(3.50%)		 62:00:47
(21.46%)		 28:17:23
(11.42%)		 -115:05:26
(0.00%)		 60:46:08
(24.53%)		 00:00:00
(N/A)











Camera status (2025/12/22)



Return to index
Previous day Next day