PRIME Observation Log 2025/12/01

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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: 2025/12/01
Local observer:
Remote observer: Ryusei,Ryunosuke
Weather: clear
Comment:
Detector Temperature: 116.99991 +- 0.00106 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:54:38
Morning 04:57:13
Science Observation
(Sun altitude < -10°)
Start 20:19:51
End 04:32:01
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 05:29:34 08:12:10 0.670
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 05:29:34 08:12:10 0.670


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 288 00:13:43 00:24:44 0.555
SAAO 815 00:38:50 01:22:23 0.471
OU 815 00:38:50 01:22:23 0.471
NASA 815 00:38:50 01:22:23 0.471
ABC 815 00:38:50 01:22:23 0.471


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_all_sky_grid 3260 02:35:23 05:29:34 0.471
TWILIGHT 288 00:13:43 00:24:44 0.555


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_field14226_test 16 00:00:45 00:08:56 0.085
offset_field14226 40 00:01:54 00:03:47 0.503
offset_field14227 40 00:01:54 00:04:09 0.458
offset_field14228 40 00:01:54 00:04:12 0.453
offset_field14229 40 00:01:54 00:03:52 0.491
offset_field14230 40 00:01:54 00:04:23 0.434
offset_field14231 40 00:01:54 00:04:40 0.408
offset_field14232 40 00:01:54 00:04:12 0.453
offset_field14233 40 00:01:54 00:03:52 0.491
offset_field14234 40 00:01:54 00:04:26 0.429
offset_field14235 40 00:01:54 00:03:52 0.491
offset_field14236 40 00:01:54 00:04:12 0.453
offset_field14237 40 00:01:54 00:03:52 0.491
offset_field14238 40 00:01:54 00:03:47 0.503
offset_field14239 40 00:01:54 00:03:47 0.503
offset_field14240 40 00:01:54 00:03:47 0.503
offset_field14241 40 00:01:54 00:03:47 0.503
offset_field14242 40 00:01:54 00:03:55 0.485
offset_field14243 40 00:01:54 00:03:52 0.491
offset_field14244 40 00:01:54 00:03:52 0.491
offset_field14245 40 00:01:54 00:03:50 0.497
offset_field14246 40 00:01:54 00:03:52 0.491
offset_field14247 40 00:01:54 00:03:52 0.491
offset_field14248 40 00:01:54 00:03:52 0.491
offset_field14249 40 00:01:54 00:03:47 0.503
offset_field14250 40 00:01:54 00:03:47 0.503
offset_field14251 40 00:01:54 00:03:47 0.503
offset_field14252 40 00:01:54 00:03:47 0.503
offset_field14253 40 00:01:54 00:03:47 0.503
offset_field14254 40 00:01:54 00:03:55 0.485
offset_field14255 40 00:01:54 00:03:52 0.491
offset_field14256 40 00:01:54 00:03:55 0.485
offset_field14257 40 00:01:54 00:03:50 0.497
offset_field14258 40 00:01:54 00:03:52 0.491
offset_field14259 40 00:01:54 00:03:52 0.491
offset_field14260 40 00:01:54 00:03:52 0.491
offset_field14261 40 00:01:54 00:03:50 0.497
offset_field14262 40 00:01:54 00:03:50 0.497
offset_field14263 40 00:01:54 00:03:50 0.497
offset_field14264 40 00:01:54 00:03:47 0.503
offset_field14265 40 00:01:54 00:03:47 0.503
offset_field14266 40 00:01:54 00:03:47 0.503
offset_field14267 40 00:01:54 00:03:52 0.491
offset_field14268 40 00:01:54 00:03:50 0.497
offset_field14269 40 00:01:54 00:03:52 0.491
offset_field14270 40 00:01:54 00:04:20 0.438
offset_field13932_test 4 00:00:11 00:01:24 0.136
offset_field13932 40 00:01:54 00:03:52 0.491
offset_field13933 40 00:01:54 00:03:52 0.491
offset_field13934 40 00:01:54 00:03:52 0.491
offset_field13935 40 00:01:54 00:03:52 0.491
offset_field13936 40 00:01:54 00:03:52 0.491
offset_field13937 40 00:01:54 00:03:52 0.491
offset_field13938 40 00:01:54 00:03:50 0.497
offset_field13939 40 00:01:54 00:03:50 0.497
offset_field13940 40 00:01:54 00:03:50 0.497
offset_field13941 40 00:01:54 00:03:55 0.485
offset_field13942 40 00:01:54 00:03:52 0.491
offset_field13943 40 00:01:54 00:03:52 0.491
offset_field13944 40 00:01:54 00:03:52 0.491
offset_field13945 40 00:01:54 00:03:58 0.480
offset_field13946 40 00:01:54 00:03:50 0.497
offset_field13947 40 00:01:54 00:03:52 0.491
offset_field13948 40 00:01:54 00:03:50 0.497
offset_field13949 40 00:01:54 00:03:50 0.497
offset_field13950 40 00:01:54 00:03:50 0.497
offset_field13951 40 00:01:54 00:03:58 0.480
offset_field13952 40 00:01:54 00:03:52 0.491
offset_field13953 40 00:01:54 00:03:52 0.491
offset_field13954 40 00:01:54 00:03:50 0.497
offset_field13955 40 00:01:54 00:03:52 0.491
offset_field13956 40 00:01:54 00:03:52 0.491
offset_field13957 40 00:01:54 00:03:52 0.491
offset_field13958 40 00:01:54 00:03:52 0.491
offset_field13959 40 00:01:54 00:03:50 0.497
offset_field13960 40 00:01:54 00:03:52 0.491
offset_field13961 40 00:01:54 00:03:50 0.497
offset_field13962 40 00:01:54 00:03:52 0.491
offset_field13963 40 00:01:54 00:03:50 0.497
offset_field13964 40 00:01:54 00:03:50 0.497
offset_field13965 40 00:01:54 00:03:50 0.497
offset_field13966 40 00:01:54 00:03:50 0.497
offset_field13967 40 00:01:54 00:06:55 0.276
FLAT OY 288 00:13:43 00:24:44 0.555










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 05:29:34 08:12:10 0.670

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 2059:39:39 1046:02:21 1013:37:18 283:48:50 243:16:09 243:16:09 243:16:09 232:45:14
Observed 1938:46:50
(94.13%)		 1046:02:21
(100.00%)		 892:44:29
(88.07%)		 207:00:04
(72.94%)		 198:25:14
(81.56%)		 320:21:40
(131.69%)		 166:57:29
(68.63%)		 232:45:14
(N/A)
Remaining 120:52:49
(5.87%)		 00:00:00
(0.00%)		 120:52:49
(11.93%)		 76:48:45
(27.06%)		 44:50:54
(18.44%)		 -78:54:29
(0.00%)		 76:18:39
(31.37%)		 00:00:00
(N/A)











Camera status (2025/12/01)



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