PRIME Observation Log 2025/03/27

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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: 2025/03/27
Local observer: Ryo Ogawa
Remote observer:
Weather: clear, cloudy
Comment:
Detector Temperature: 114.00009 +- 0.00110 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:00:40
Morning 06:23:32
Science Observation
(Sun altitude < -10°)
Start 19:21:58
End 06:02:13
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:15:46
End 06:02:13


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:36:51 10:40:14 0.339
GB Time 00:00:41 05:46:27 0.002
Non-GB Time 03:36:09 04:53:47 0.736


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.)
GB 4 00:00:11 00:00:41 0.276
CALIB 184 00:08:46 00:23:49 0.368
SAAO 530 00:25:15 00:54:02 0.467
OU 530 00:25:15 00:54:02 0.467
NASA 530 00:25:15 00:54:02 0.467
ABC 530 00:25:15 00:54:02 0.467


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 4 00:00:11 00:00:41 0.276
TWILIGHT 184 00:08:46 00:23:49 0.368
all_sky_grid 2120 01:41:03 03:36:09 0.467


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB97_dither OH 4 00:00:11 00:00:41 0.276
FLAT_test OH 8 00:00:22 00:02:09 0.177
FLAT OH 176 00:08:23 00:21:39 0.387
field22840_test 16 00:00:45 00:03:06 0.246
field22840 40 00:01:54 00:03:47 0.503
field22841 40 00:01:54 00:03:47 0.503
field22842 40 00:01:54 00:03:50 0.497
field22843 40 00:01:54 00:03:52 0.491
field22844 40 00:01:54 00:03:50 0.497
field22845 40 00:01:54 00:03:50 0.497
field22846 40 00:01:54 00:03:50 0.497
field22847 40 00:01:54 00:03:50 0.497
field22848 40 00:01:54 00:03:47 0.503
field22849 40 00:01:54 00:03:50 0.497
field22850 40 00:01:54 00:03:47 0.503
field22851 40 00:01:54 00:03:47 0.503
field22852 40 00:01:54 00:03:47 0.503
field22853 40 00:01:54 00:03:50 0.497
field22854 40 00:01:54 00:03:50 0.497
field22855 40 00:01:54 00:03:52 0.491
field22856 40 00:01:54 00:03:52 0.491
field22857 40 00:01:54 00:03:50 0.497
field22858 40 00:01:54 00:03:47 0.503
field22859 40 00:01:54 00:03:47 0.503
field22860 40 00:01:54 00:03:47 0.503
field22861 40 00:01:54 00:03:47 0.503
field22862 40 00:01:54 00:03:47 0.503
field22863 40 00:01:54 00:03:47 0.503
field22864 40 00:01:54 00:03:52 0.491
field22865 40 00:01:54 00:03:52 0.491
field22866 40 00:01:54 00:03:52 0.491
field22867 40 00:01:54 00:03:50 0.497
field22868 40 00:01:54 00:03:47 0.503
field22869 40 00:01:54 00:03:47 0.503
field22870 40 00:01:54 00:03:47 0.503
field22871 40 00:01:54 00:03:50 0.497
field22872 40 00:01:54 00:03:50 0.497
field22873 40 00:01:54 00:03:47 0.503
field22874 40 00:01:54 00:03:52 0.491
field22875 40 00:01:54 00:03:50 0.497
field22876 40 00:01:54 00:03:55 0.485
field22877 40 00:01:54 00:04:11 0.455
field7531 40 00:01:54 00:05:58 0.319
field7801_test 28 00:01:20 00:11:05 0.120
field7801 40 00:01:54 00:03:52 0.491
field8074 40 00:01:54 00:03:47 0.503
field8075 40 00:01:54 00:03:50 0.497
field8351 40 00:01:54 00:03:47 0.503
field8630 40 00:01:54 00:03:50 0.497
field8631 40 00:01:54 00:03:50 0.497
field8913 40 00:01:54 00:03:52 0.491
field9198 40 00:01:54 00:04:15 0.448
field3530 40 00:01:54 00:03:52 0.491
field4144 40 00:01:54 00:03:52 0.491
field4359 40 00:01:54 00:03:50 0.497
field4360 40 00:01:54 00:03:50 0.497
field4578 36 00:01:42 00:03:43 0.461










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 121:53:15 276:06:41 0.441

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 1770:42:51 909:45:00 860:57:50 241:04:11 206:37:53 206:37:53 206:37:53 102:56:46
Observed 279:23:27
(15.78%)		 70:11:31
(7.72%)		 209:11:56
(24.30%)		 23:35:39
(9.79%)		 53:27:28
(25.87%)		 112:25:43
(54.41%)		 19:43:04
(9.54%)		 102:56:46
(N/A)
Remaining 1491:19:23
(84.22%)		 839:33:28
(92.28%)		 651:45:54
(75.70%)		 217:28:32
(90.21%)		 153:10:24
(74.13%)		 94:12:09
(45.59%)		 186:54:48
(90.46%)		 00:00:00
(N/A)











Camera status (2025/03/27)



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