PRIME Observation Log 2025/05/16

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: 2025/05/16
Local observer: Ryusei
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.01000 +- 0.00840 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:09:50
Morning 06:56:44
Science Observation
(Sun altitude < -10°)
Start 18:32:14
End 06:34:18
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:59:12
End 06:34:18


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:59:36 12:02:04 0.166
GB Time 00:00:41 09:35:06 0.001
Non-GB Time 01:58:54 02:26:58 0.809


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 84 00:04:00 00:08:13 0.487
GB 4 00:00:11 00:00:41 0.276
SAAO 264 00:12:35 00:29:43 0.423
OU 264 00:12:35 00:29:43 0.423
NASA 264 00:12:35 00:29:43 0.423
ABC 264 00:12:35 00:29:43 0.423


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 84 00:04:00 00:08:13 0.487
all_sky_grid 1056 00:50:20 01:58:54 0.423
Bulge 4 00:00:11 00:00:41 0.276


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OJ 4 00:00:11 00:01:10 0.163
FLAT OJ 80 00:03:48 00:07:02 0.541
field13988_test 16 00:00:45 00:10:31 0.072
field13988 40 00:01:54 00:03:52 0.491
field13989 40 00:01:54 00:03:50 0.497
field13990 40 00:01:54 00:03:50 0.497
field13991 40 00:01:54 00:03:50 0.497
field13992 40 00:01:54 00:03:50 0.497
field13993 40 00:01:54 00:03:58 0.480
field13994 40 00:01:54 00:03:50 0.497
field13995 40 00:01:54 00:03:52 0.491
field13996 40 00:01:54 00:03:50 0.497
field13997 40 00:01:54 00:03:47 0.503
field13998 40 00:01:54 00:03:50 0.497
field13999 40 00:01:54 00:03:50 0.497
field14000 40 00:01:54 00:03:52 0.491
field14001 40 00:01:54 00:03:52 0.491
field14002 40 00:01:54 00:03:52 0.491
field14003 40 00:01:54 00:03:50 0.497
field14004 40 00:01:54 00:03:47 0.503
field14005 40 00:01:54 00:07:39 0.249
field14006 40 00:01:54 00:03:52 0.491
field14007 40 00:01:54 00:03:50 0.497
field14008 40 00:01:54 00:03:52 0.491
field14009 40 00:01:54 00:03:47 0.503
field14010 40 00:01:54 00:03:50 0.497
field14011 40 00:01:54 00:03:50 0.497
field14012 40 00:01:54 00:03:52 0.491
field14013 40 00:01:54 00:08:19 0.229
GB63_test OJ 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 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 132:25:47 189:59:54 0.697

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 1815:34:31 925:24:14 890:10:16 249:14:52 213:38:28 213:38:28 213:38:28 136:30:30
Observed 609:49:50
(33.59%)		 278:54:05
(30.14%)		 330:55:45
(37.18%)		 49:30:24
(19.86%)		 78:58:38
(36.97%)		 158:49:14
(74.34%)		 43:37:27
(20.42%)		 136:30:30
(N/A)
Remaining 1205:44:40
(66.41%)		 646:30:09
(69.86%)		 559:14:31
(62.82%)		 199:44:27
(80.14%)		 134:39:49
(63.03%)		 54:49:13
(25.66%)		 170:01:00
(79.58%)		 00:00:00
(N/A)











Camera status (2025/05/16)



Return to index
Previous day Next day