PRIME Observation Log 2023/04/06

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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: 2023/04/06
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 18:48:41
Morning 06:29:58
Science Observation
(Sun altitude < -10°)
Start 19:10:01
End 06:08:36
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:38:21
End 06:08:36


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:02:40 10:58:35 0.460
GB Time 02:12:27 06:30:15 0.339
Non-GB Time 02:50:12 04:28:20 0.634


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
OU 1553 01:14:01 02:50:12 0.435
GB 704 00:33:33 02:12:27 0.253


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FilterTest 1221 00:58:12 01:42:09 0.570
bulge 704 00:33:33 02:12:27 0.253
SKY 52 00:02:28 00:35:39 0.070
Twilght 280 00:13:20 00:32:23 0.412


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
NBJ 1221 00:58:12 01:42:09 0.570
GB10 OJ 124 00:05:54 00:52:50 0.112
GB11 OJ 48 00:02:17 00:04:45 0.481
GB12 OJ 48 00:02:17 00:04:48 0.476
GB13 OJ 48 00:02:17 00:04:45 0.481
GB14 OJ 48 00:02:17 00:04:50 0.473
GB21 OJ 100 00:04:46 00:30:43 0.155
GB20 OJ 48 00:02:17 00:04:45 0.481
GB19 OJ 48 00:02:17 00:04:48 0.476
GB18 OJ 48 00:02:17 00:04:48 0.476
GB17 OJ 48 00:02:17 00:04:48 0.476
GB16 OJ 48 00:02:17 00:04:48 0.476
GB15 OJ 48 00:02:17 00:05:44 0.399
GCsky 52 00:02:28 00:35:39 0.070
Flat 280 00:13:20 00:32:23 0.412










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 15:43:56 65:22:59 0.241

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 1579:21:57 847:15:15 732:06:42 204:59:28 175:42:24 175:42:24 175:42:24 13:57:54
Observed 141:31:11
(8.96%)		 37:02:58
(4.37%)		 104:28:13
(14.27%)		 00:00:00
(0.00%)		 102:42:37
(58.46%)		 01:45:35
(1.00%)		 00:00:00
(0.00%)		 13:57:54
(N/A)
Remaining 1437:50:46
(91.04%)		 810:12:16
(95.63%)		 627:38:29
(85.73%)		 204:59:28
(100.00%)		 72:59:46
(41.54%)		 173:56:49
(99.00%)		 175:42:24
(100.00%)		 00:00:00
(N/A)











Camera status (2023/04/06)