PRIME Observation Log 2025/03/16

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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: 2025/03/16
Local observer: Yuki Satoh
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00287 +- 0.01180 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:14:58
Morning 06:15:47
Science Observation
(Sun altitude < -10°)
Start 19:36:25
End 05:54:20
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:59:00
End 05:54:20


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:32:30 10:17:54 0.150
GB Time 00:00:00 04:55:19 0.000
Non-GB Time 01:32:30 05:22:35 0.287


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 364 00:17:21 00:30:59 0.560
OU 208 00:09:54 01:32:30 0.107


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 364 00:17:21 00:30:59 0.560
tel_analysys 208 00:09:54 01:32:30 0.107


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OH 4 00:00:11 00:00:22 0.503
FLAT OH 360 00:17:09 00:30:37 0.560
0_test 48 00:02:17 00:13:33 0.169
0 4 00:00:11 00:02:14 0.085
1 4 00:00:11 00:01:55 0.099
2 4 00:00:11 00:02:06 0.090
3 4 00:00:11 00:01:58 0.097
4 4 00:00:11 00:02:56 0.065
5 4 00:00:11 00:01:07 0.169
6 4 00:00:11 00:02:09 0.089
7 4 00:00:11 00:01:41 0.113
8 4 00:00:11 00:02:03 0.093
9 4 00:00:11 00:02:26 0.078
10 4 00:00:11 00:01:35 0.120
11 4 00:00:11 00:02:00 0.095
12 4 00:00:11 00:01:55 0.099
13 4 00:00:11 00:02:00 0.095
14 4 00:00:11 00:02:28 0.077
15 4 00:00:11 00:01:32 0.123
16 4 00:00:11 00:01:55 0.099
17 4 00:00:11 00:02:00 0.095
18 4 00:00:11 00:02:00 0.095
19 4 00:00:11 00:02:28 0.077
20 4 00:00:11 00:01:27 0.131
21 4 00:00:11 00:02:06 0.090
22 4 00:00:11 00:02:00 0.095
23 4 00:00:11 00:01:58 0.097
24 4 00:00:11 00:02:28 0.077
25 4 00:00:11 00:02:37 0.073
26 4 00:00:11 00:00:50 0.225
27 4 00:00:11 00:02:03 0.093
28 4 00:00:11 00:02:03 0.093
29 4 00:00:11 00:02:23 0.080
30 4 00:00:11 00:01:32 0.123
31 4 00:00:11 00:01:58 0.097
32 4 00:00:11 00:02:00 0.095
33 4 00:00:11 00:02:00 0.095
34 4 00:00:11 00:02:23 0.080
35 4 00:00:11 00:01:38 0.116
36 4 00:00:11 00:01:55 0.099
37 4 00:00:11 00:02:03 0.093
38 4 00:00:11 00:02:03 0.093
39 4 00:00:11 00:00:41 0.276










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 65:18:24 160:34:49 0.407

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 1771:53:57 911:35:35 860:18:21 240:53:08 206:28:24 206:28:24 206:28:24 94:27:20
Observed 222:48:37
(12.57%)		 42:24:11
(4.65%)		 180:24:25
(20.97%)		 16:23:46
(6.81%)		 46:15:35
(22.40%)		 105:13:50
(50.97%)		 12:31:12
(6.06%)		 94:27:20
(N/A)
Remaining 1549:05:19
(87.43%)		 869:11:23
(95.35%)		 679:53:56
(79.03%)		 224:29:21
(93.19%)		 160:12:48
(77.60%)		 101:14:33
(49.03%)		 193:57:12
(93.94%)		 00:00:00
(N/A)











Camera status (2025/03/16)