PRIME Observation Log 2025/10/22

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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: 2025/10/22
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 116.16802 +- 0.09851 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:17:18
Morning 05:24:31
Science Observation
(Sun altitude < -10°)
Start 19:39:50
End 05:02:01
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:39:50
End 22:03:19


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:48:41 09:22:10 0.300
GB Time 00:01:35 02:23:29 0.011
Non-GB Time 02:47:06 06:58:41 0.399


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 320 00:15:15 00:37:46 0.404
GB 8 00:00:22 00:01:35 0.241
SAAO 332 00:15:49 00:41:46 0.379
OU 332 00:15:49 00:41:46 0.379
NASA 332 00:15:49 00:41:46 0.379
ABC 332 00:15:49 00:41:46 0.379


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 320 00:15:15 00:37:46 0.404
Bulge 8 00:00:22 00:01:35 0.241
all_sky_grid 1328 01:03:18 02:47:06 0.379


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 320 00:15:15 00:37:46 0.404
GB76_test OH 8 00:00:22 00:01:35 0.241
field13273_test 8 00:00:22 00:02:09 0.176
field13273 40 00:01:54 00:05:57 0.320
field13274 40 00:01:54 00:04:47 0.398
field13275 40 00:01:54 00:04:55 0.387
field13276 40 00:01:54 00:04:50 0.394
field13277 40 00:01:54 00:04:50 0.394
field13278 40 00:01:54 00:04:50 0.394
field13279 40 00:01:54 00:04:50 0.394
field12042 40 00:01:54 00:04:50 0.394
field12043 40 00:01:54 00:04:50 0.394
field13282 40 00:01:54 00:04:50 0.394
field13283 40 00:01:54 00:04:50 0.394
field13284 40 00:01:54 00:04:52 0.391
field13285 40 00:01:54 00:06:39 0.286
field2511 40 00:01:54 00:04:47 0.398
field2683 40 00:01:54 00:04:50 0.394
field2682 40 00:01:54 00:04:50 0.394
field2510 40 00:01:54 00:04:52 0.391
field2681 40 00:01:54 00:04:55 0.387
field2345 40 00:01:54 00:04:50 0.394
field2346 40 00:01:54 00:05:20 0.356
field4461 40 00:01:54 00:04:47 0.398
field4683 40 00:01:54 00:04:50 0.394
field5144 40 00:01:54 00:04:44 0.402
field5143 40 00:01:54 00:04:50 0.394
field5378 40 00:01:54 00:04:50 0.394
field6364 40 00:01:54 00:04:44 0.402
field6363 40 00:01:54 00:04:50 0.394
field6622 40 00:01:54 00:04:47 0.398
field6621 40 00:01:54 00:04:47 0.398
field6884 40 00:01:54 00:04:52 0.391
field6885 40 00:01:54 00:04:52 0.391
field6886 40 00:01:54 00:04:50 0.394
field6882 40 00:01:54 00:06:47 0.280










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 122:45:36 214:12:43 0.573

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 1995:16:46 1046:32:04 948:44:41 265:38:54 227:41:55 227:41:55 227:41:55 210:50:02
Observed 1700:01:25
(85.20%)		 1029:39:26
(98.39%)		 670:21:58
(70.66%)		 158:24:39
(59.63%)		 149:17:26
(65.56%)		 248:43:37
(109.24%)		 113:56:15
(50.04%)		 210:50:02
(N/A)
Remaining 295:15:20
(14.80%)		 16:52:38
(1.61%)		 278:22:42
(29.34%)		 107:14:15
(40.37%)		 78:24:29
(34.44%)		 -22:58:18
(0.00%)		 113:45:40
(49.96%)		 00:00:00
(N/A)











Camera status (2025/10/22)



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