PRIME Observation Log 2025/02/18

Return to index
Previous day Next day

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: 2025/02/18
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 111.50071 +- 0.00345 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:46:50
Morning 05:54:41
Science Observation
(Sun altitude < -10°)
Start 20:09:20
End 05:32:11
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 02:41:13
End 05:32:11


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:26:51 09:22:50 0.261
GB Time 00:00:00 02:50:57 0.000
Non-GB Time 02:26:51 06:31:52 0.375


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.)
CALIB 128 00:06:06 00:14:32 0.420
ALLSKY 1228 00:58:32 02:26:51 0.399
SAAO 307 00:14:38 00:36:42 0.399
OU 307 00:14:38 00:36:42 0.399
NASA 307 00:14:38 00:36:42 0.399
ABC 307 00:14:38 00:36:42 0.399


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 80 00:03:48 00:07:02 0.541
all_sky_grid 1228 00:58:32 02:26:51 0.399
test 48 00:02:17 00:07:29 0.305


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT ZO 80 00:03:48 00:07:02 0.541
field1715_test 20 00:00:57 00:09:27 0.101
field1715 40 00:01:54 00:03:50 0.497
field1716 40 00:01:54 00:03:50 0.497
field1717 40 00:01:54 00:03:50 0.497
field1718 40 00:01:54 00:03:52 0.491
field1719 40 00:01:54 00:03:50 0.497
field1720 40 00:01:54 00:03:47 0.503
field1721 40 00:01:54 00:03:47 0.503
field1722 40 00:01:54 00:04:09 0.458
field1864 40 00:01:54 00:03:47 0.503
field1865 40 00:01:54 00:03:50 0.497
field1866 40 00:01:54 00:03:55 0.485
field1867 40 00:01:54 00:05:44 0.332
field2017 40 00:01:54 00:04:01 0.474
field2018 40 00:01:54 00:03:47 0.503
field2019 40 00:01:54 00:03:47 0.503
field2020 40 00:01:54 00:03:47 0.503
field2021 40 00:01:54 00:03:50 0.497
field2022 40 00:01:54 00:04:09 0.458
field2023 40 00:01:54 00:03:50 0.497
field2024 40 00:01:54 00:03:47 0.503
field2025 40 00:01:54 00:04:57 0.385
field2178_test 4 00:00:11 00:05:47 0.033
field2178 40 00:01:54 00:03:47 0.503
field2179 40 00:01:54 00:03:47 0.503
field2180 40 00:01:54 00:03:47 0.503
field2181 40 00:01:54 00:03:47 0.503
field2182 40 00:01:54 00:03:50 0.497
field2183 40 00:01:54 00:03:47 0.503
field2184 40 00:01:54 00:03:47 0.503
field2185 40 00:01:54 00:03:47 0.503
field2186 40 00:01:54 00:16:21 0.117
field2865_test 4 00:00:11 00:00:41 0.276
test 48 00:02:17 00:07:29 0.305










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 53:54:42 163:34:51 0.330

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 1834:45:41 929:34:02 905:11:38 253:27:15 217:14:47 217:14:47 217:14:47 32:17:04
Observed 157:30:12
(8.58%)		 09:14:27
(0.99%)		 148:15:45
(16.38%)		 09:58:50
(3.94%)		 38:18:09
(17.63%)		 93:52:30
(43.21%)		 06:06:15
(2.81%)		 32:17:04
(N/A)
Remaining 1677:15:28
(91.42%)		 920:19:35
(99.01%)		 756:55:52
(83.62%)		 243:28:24
(96.06%)		 178:56:38
(82.37%)		 123:22:17
(56.79%)		 211:08:31
(97.19%)		 00:00:00
(N/A)











Camera status (2025/02/18)