PRIME Observation Log 2025/12/05

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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: 2025/12/05
Local observer:
Remote observer: Takuto
Weather: clear
Comment:
Detector Temperature: 116.99931 +- 0.02273 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:58:05
Morning 04:57:00
Science Observation
(Sun altitude < -10°)
Start 20:23:30
End 04:31:36
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 00:23:49 08:08:06 0.049
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 00:23:49 08:08:06 0.049


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.)
SAAO 29 00:01:22 00:05:57 0.232
OU 29 00:01:22 00:05:57 0.232
NASA 29 00:01:22 00:05:57 0.232
ABC 29 00:01:22 00:05:57 0.232


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_all_sky_grid 116 00:05:31 00:23:49 0.232


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_field16380_test 24 00:01:08 00:13:29 0.085
offset_field16380 52 00:02:28 00:05:59 0.413
offset_field16065 40 00:01:54 00:04:20 0.440










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 22:01:32 40:50:24 0.539

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 2059:52:30 1046:02:21 1013:50:09 283:52:26 243:19:14 243:19:14 243:19:14 234:12:20
Observed 1955:18:48
(94.92%)		 1046:02:21
(100.00%)		 909:16:27
(89.69%)		 211:08:04
(74.38%)		 202:33:13
(83.25%)		 324:29:39
(133.36%)		 171:05:29
(70.32%)		 234:12:20
(N/A)
Remaining 104:33:41
(5.08%)		 00:00:00
(0.00%)		 104:33:41
(10.31%)		 72:44:22
(25.62%)		 40:46:00
(16.75%)		 -82:49:35
(0.00%)		 72:13:45
(29.68%)		 00:00:00
(N/A)











Camera status (2025/12/05)



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