PRIME Observation Log 2023/04/20

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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: 2023/04/20
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 0.00000 +- 0.00000 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:32:24
Morning 06:39:16
Science Observation
(Sun altitude < -10°)
Start 18:53:58
End 06:17:40
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 22:43:19
End 06:17:40


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:09:57 11:23:42 0.366
GB Time 00:00:00 07:34:21 0.000
Non-GB Time 04:09:57 03:49:21 1.090


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
OU 2084 01:39:20 04:09:57 0.397


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FilterTest 84 00:04:00 00:51:39 0.077
background 2000 01:35:20 03:18:17 0.481


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
OH 12 00:00:34 00:02:50 0.201
OY 12 00:00:34 00:02:45 0.208
OJ 12 00:00:34 00:02:42 0.211
OO 12 00:00:34 00:21:08 0.027
ZO 4 00:00:11 00:00:53 0.215
ZH 4 00:00:11 00:00:58 0.194
ZY 4 00:00:11 00:00:53 0.215
ZJ 4 00:00:11 00:05:17 0.036
NBJ 2004 01:35:31 03:19:13 0.479
NBY 4 00:00:11 00:00:58 0.194
NBH 4 00:00:11 00:00:53 0.215
NBO 4 00:00:11 00:00:41 0.276
DO 4 00:00:11 00:10:40 0.018










Stats so far in 2023
Monthly observed fraction so far in 2023
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 18:43:03 259:20:03 0.072
Feb 51:45:11 258:50:12 0.200
Mar 55:18:59 318:34:15 0.174
Apr 41:00:53 222:14:42 0.185

Observed time so far in 2023
- Total time of each institute is calculated by the following
    [All observation time in 2023] = [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 2023] = [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 2023] = [All observation time in 2023] - [GB observation time in 2023]
    
    [OU, NASA, ABC time in 2023] = 0.24 x [Non-GB observation time in 2023]
    [SAAO time in 2023] = 0.28 x [Non-GB observation time in 2023]
    
- 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 1526:13:02 808:32:31 717:40:31 200:56:56 172:14:31 172:14:31 172:14:31 14:55:46
Observed 166:48:07
(10.93%)		 47:52:32
(5.92%)		 118:55:35
(16.57%)		 00:00:00
(0.00%)		 117:10:00
(68.02%)		 01:45:35
(1.02%)		 00:00:00
(0.00%)		 14:55:46
(N/A)
Remaining 1359:24:54
(89.07%)		 760:39:59
(94.08%)		 598:44:55
(83.43%)		 200:56:56
(100.00%)		 55:04:30
(31.98%)		 170:28:56
(98.98%)		 172:14:31
(100.00%)		 00:00:00
(N/A)











Camera status (2023/04/20)