PRIME Observation Log 2025/05/29

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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: 2025/05/29
Local observer: ryusei
Remote observer:
Weather: cloudy, rain
Comment:
Detector Temperature: 114.00010 +- 0.00098 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:04:13
Morning 07:04:31
Science Observation
(Sun altitude < -10°)
Start 18:27:01
End 06:41:41
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:08:05
End 06:41:41


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:38:59 12:14:39 0.135
GB Time 00:37:34 10:33:35 0.059
Non-GB Time 01:01:24 01:41:03 0.608


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 288 00:13:43 00:37:34 0.365
SAAO 136 00:06:28 00:15:21 0.422
OU 136 00:06:28 00:15:21 0.422
NASA 136 00:06:28 00:15:21 0.422
ABC 136 00:06:28 00:15:21 0.422


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 544 00:25:55 01:01:24 0.422
Bulge 288 00:13:43 00:37:34 0.365


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field1917_test 20 00:00:57 00:05:46 0.165
field1917 40 00:01:54 00:03:50 0.497
field1918 40 00:01:54 00:03:50 0.497
field1919 44 00:02:05 00:05:00 0.419
field1920 40 00:01:54 00:03:50 0.497
field1921 40 00:01:54 00:03:52 0.491
field1922 40 00:01:54 00:03:47 0.503
field1923 40 00:01:54 00:03:52 0.491
field1924 40 00:01:54 00:04:01 0.474
field1925 40 00:01:54 00:05:19 0.358
field1926 40 00:01:54 00:04:01 0.474
field1927 40 00:01:54 00:03:52 0.491
field1928 40 00:01:54 00:03:50 0.497
field1929 40 00:01:54 00:06:29 0.293
GB63_test OJ 28 00:01:20 00:11:59 0.111
GB63_dither OJ 48 00:02:17 00:04:32 0.503
GB80_dither OJ 48 00:02:17 00:04:35 0.498
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB114_dither OJ 48 00:02:17 00:04:32 0.503
GB131_test OJ 4 00:00:11 00:00:25 0.448
GB113_test OJ 4 00:00:11 00:00:22 0.504
GB96_test OJ 4 00:00:11 00:00:22 0.503
GB79_test OJ 4 00:00:11 00:00:25 0.448
GB62_test OJ 4 00:00:11 00:00:50 0.225
GB62_dither OJ 48 00:02:17 00:04:51 0.471










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 219:51:17 348:00:16 0.632

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 1823:59:53 931:43:08 892:16:44 249:50:17 214:08:49 214:08:49 214:08:49 144:45:16
Observed 697:15:23
(38.23%)		 350:56:24
(37.67%)		 346:18:58
(38.81%)		 53:50:56
(21.55%)		 82:39:32
(38.60%)		 162:30:08
(75.88%)		 47:18:21
(22.09%)		 144:45:16
(N/A)
Remaining 1126:44:29
(61.77%)		 580:46:43
(62.33%)		 545:57:45
(61.19%)		 195:59:20
(78.45%)		 131:29:16
(61.40%)		 51:38:40
(24.12%)		 166:50:27
(77.91%)		 00:00:00
(N/A)











Camera status (2025/05/29)



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