PRIME Observation Log 2025/02/20

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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: 2025/02/20
Local observer: Ryusei Hamada
Remote observer: #
Weather: cloudy & rainy
Comment:
Detector Temperature: 111.50208 +- 0.00406 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:44:38
Morning 05:56:29
Science Observation
(Sun altitude < -10°)
Start 20:07:00
End 05:34:06
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 02:33:21
End 05:34:06


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 00:00:00 09:27:05 0.000
GB Time 00:00:00 03:00:43 0.000
Non-GB Time 00:00:00 06:26:21 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 2287 01:49:00 03:18:47 0.548


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
calibration 2287 01:49:00 03:18:47 0.548


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
test 12 00:00:34 00:18:13 0.031
superbias 480 00:22:52 01:00:12 0.380
Dark 421 00:20:04 00:20:34 0.976
LSS_H 200 00:09:32 00:30:15 0.315
NLC_H 633 00:30:10 00:32:19 0.933
LSS_J 120 00:05:43 00:16:18 0.351
NLC_J 421 00:20:04 00:20:53 0.961










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 53:54:42 182:26:54 0.295

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 1825:19:39 926:35:45 898:43:54 251:38:41 215:41:44 215:41:44 215:41:44 35:42:20
Observed 157:30:12
(8.63%)		 09:14:27
(1.00%)		 148:15:45
(16.50%)		 09:58:50
(3.97%)		 38:18:09
(17.76%)		 93:52:30
(43.52%)		 06:06:15
(2.83%)		 35:42:20
(N/A)
Remaining 1667:49:26
(91.37%)		 917:21:18
(99.00%)		 750:28:08
(83.50%)		 241:39:51
(96.03%)		 177:23:35
(82.24%)		 121:49:14
(56.48%)		 209:35:28
(97.17%)		 00:00:00
(N/A)











Camera status (2025/02/20)