PRIME Observation Log 2025/05/17

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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: 2025/05/17
Local observer: Ryusei Hamada
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00004 +- 0.00061 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:09:15
Morning 06:57:22
Science Observation
(Sun altitude < -10°)
Start 18:31:41
End 06:34:54
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:55:16
End 06:34:54


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:54:32 12:03:12 0.158
GB Time 01:54:32 09:39:37 0.198
Non-GB Time 00:00:00 02:23:34 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 1060 00:50:31 01:54:32 0.441


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 1036 00:49:22 01:51:59 0.441
SKY 24 00:01:08 00:02:33 0.448


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB63_test OJ 8 00:00:22 00:03:46 0.101
GB63_test OH 20 00:00:57 00:08:34 0.111
GB63_dither OH 48 00:02:17 00:04:41 0.488
GB62_dither OH 48 00:02:17 00:04:41 0.488
GB61_dither OH 48 00:02:17 00:04:43 0.484
GB60_dither OH 48 00:02:17 00:04:32 0.503
GB59_dither OH 48 00:02:17 00:05:48 0.394
GB58_dither OH 48 00:02:17 00:04:41 0.488
GB57_dither OH 48 00:02:17 00:04:54 0.467
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB75_dither OH 24 00:01:08 00:02:19 0.493
GB76_dither OH 24 00:01:08 00:02:21 0.484
GB77_dither OH 24 00:01:08 00:02:19 0.493
GB78_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:16 0.503
GB94_dither OH 24 00:01:08 00:02:21 0.484
GB93_dither OH 24 00:01:08 00:02:19 0.493
GB92_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB109_dither OH 24 00:01:08 00:02:19 0.493
GB110_dither OH 24 00:01:08 00:02:19 0.493
GB111_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 24 00:01:08 00:02:21 0.483
GB113_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB131_dither OH 24 00:01:08 00:02:21 0.484
GB130_dither OH 24 00:01:08 00:02:19 0.493
GB129_dither OH 24 00:01:08 00:02:21 0.484
GB128_dither OH 24 00:01:08 00:02:19 0.493
GB127_dither OH 24 00:01:08 00:02:21 0.484
GB126_dither OH 24 00:01:08 00:02:21 0.484
GB125_dither OH 24 00:01:08 00:02:27 0.465
GCsky 24 00:01:08 00:02:33 0.448










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 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 134:20:20 202:03:07 0.665

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 1811:27:27 922:28:58 888:58:29 248:54:46 213:21:14 213:21:14 213:21:14 136:30:30
Observed 611:44:23
(33.77%)		 280:48:38
(30.44%)		 330:55:45
(37.23%)		 49:30:24
(19.89%)		 78:58:38
(37.02%)		 158:49:14
(74.44%)		 43:37:27
(20.45%)		 136:30:30
(N/A)
Remaining 1199:43:04
(66.23%)		 641:40:20
(69.56%)		 558:02:43
(62.77%)		 199:24:21
(80.11%)		 134:22:35
(62.98%)		 54:31:59
(25.56%)		 169:43:46
(79.55%)		 00:00:00
(N/A)











Camera status (2025/05/17)



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