PRIME Observation Log 2026/02/14

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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: 2026/02/14
Local observer:
Remote observer: Ryo Ogawa
Weather:
Comment:
Detector Temperature: 111.99930 +- 0.01101 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:51:20
Morning 05:50:46
Science Observation
(Sun altitude < -10°)
Start 20:14:05
End 05:28:00
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 02:57:58
End 05:28:00


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:13:40 09:13:55 0.458
GB Time 00:00:00 02:30:02 0.000
Non-GB Time 04:13:40 06:43:52 0.628


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 20 00:00:57 00:07:15 0.131
NASA 608 00:28:58 01:20:24 0.360
SAAO 498 00:23:44 00:57:45 0.411
OU 498 00:23:44 00:57:45 0.411
ABC 498 00:23:44 00:57:45 0.411


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 20 00:00:57 00:07:15 0.131
all_sky_grid 1992 01:34:57 03:51:02 0.411
ToO 110 00:05:14 00:22:38 0.232


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 20 00:00:57 00:07:15 0.131
field6918_test 108 00:05:08 00:31:06 0.165
field5905_test 4 00:00:11 00:01:18 0.145
field5905 60 00:02:51 00:05:49 0.491
field5906 60 00:02:51 00:05:54 0.484
field5907 60 00:02:51 00:05:57 0.480
field5908 60 00:02:51 00:06:11 0.462
field5909 60 00:02:51 00:05:54 0.484
field5910 60 00:02:51 00:06:20 0.451
field5911 60 00:02:51 00:05:57 0.480
field5912 60 00:02:51 00:06:22 0.448
field5913 60 00:02:51 00:06:06 0.469
field5914 60 00:02:51 00:05:57 0.480
field5915 60 00:02:51 00:06:45 0.423
field2059_test 20 00:00:57 00:05:35 0.171
field2059 60 00:02:51 00:06:14 0.458
field2060 60 00:02:51 00:06:28 0.442
field2061 60 00:02:51 00:06:11 0.462
field2062 60 00:02:51 00:06:08 0.465
field2063 60 00:02:51 00:05:46 0.495
field2216 60 00:02:51 00:06:25 0.445
field2217 60 00:02:51 00:06:17 0.455
field2218 60 00:02:51 00:06:25 0.445
field2219 60 00:02:51 00:06:03 0.472
field2220 60 00:02:51 00:06:11 0.462
field2221 60 00:02:51 00:05:57 0.480
field2222 60 00:02:51 00:06:31 0.438
field2379 60 00:02:51 00:06:39 0.429
field2380 60 00:02:51 00:06:25 0.445
field2381 60 00:02:51 00:06:03 0.472
field2382 60 00:02:51 00:06:39 0.429
field2383 60 00:02:51 00:05:43 0.499
field2384 60 00:02:51 00:06:11 0.462
field2385 60 00:02:51 00:06:20 0.451
field2386 60 00:02:51 00:06:56 0.412
field8331_test 110 00:05:14 00:22:38 0.232










Stats so far in 2026
Monthly observed fraction so far in 2026
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 55:55:01 259:31:55 0.215
Feb 37:30:23 126:09:16 0.297

Observed time so far in 2026
- Total time of each institute is calculated by the following
    [All observation time in 2026] = [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 2026] = [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 2026] = [All observation time in 2026] - [GB observation time in 2026]
    
    [OU, NASA, ABC time in 2026] = 0.24 x [Non-GB observation time in 2026]
    [SAAO time in 2026] = 0.28 x [Non-GB observation time in 2026]
    
- 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 1789:28:53 932:39:00 856:49:53 239:54:46 205:38:22 205:38:22 205:38:22 17:27:56
Observed 93:25:27
(5.22%)		 06:33:30
(0.70%)		 86:51:56
(10.14%)		 22:45:38
(9.49%)		 20:21:50
(9.90%)		 25:54:09
(12.60%)		 17:50:18
(8.67%)		 17:27:56
(N/A)
Remaining 1696:03:25
(94.78%)		 926:05:29
(99.30%)		 769:57:56
(89.86%)		 217:09:07
(90.51%)		 185:16:31
(90.10%)		 179:44:12
(87.40%)		 187:48:04
(91.33%)		 00:00:00
(N/A)











Camera status (2026/02/14)



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