PRIME Observation Log 2025/03/30

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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: 2025/03/30
Local observer: Ryo Ogawa
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00008 +- 0.00123 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:56:49
Morning 06:25:35
Science Observation
(Sun altitude < -10°)
Start 19:18:07
End 06:04:16
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:03:58
End 06:04:16


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:17:36 10:46:09 0.492
GB Time 00:17:13 06:00:18 0.048
Non-GB Time 05:00:23 04:45:51 1.051


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 88 00:04:11 00:10:56 0.384
ALLSKY 372 00:17:43 00:42:33 0.417
NASA 3308 02:37:40 04:28:28 0.587
GB 144 00:06:51 00:17:13 0.399
SAAO 93 00:04:25 00:10:38 0.417
OU 93 00:04:25 00:10:38 0.417
ABC 93 00:04:25 00:10:38 0.417


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 88 00:04:11 00:10:56 0.384
all_sky_grid 372 00:17:43 00:42:33 0.417
ToO 3215 02:33:14 04:17:50 0.594
Bulge 144 00:06:51 00:17:13 0.399


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 4 00:00:11 00:00:41 0.276
FLAT_test ZO 4 00:00:11 00:00:53 0.214
FLAT ZO 80 00:03:48 00:09:21 0.408
field10902_test 12 00:00:34 00:06:02 0.095
field10902 40 00:01:54 00:03:52 0.491
field10903 40 00:01:54 00:03:50 0.497
field10904 40 00:01:54 00:03:50 0.497
field10905 40 00:01:54 00:03:52 0.491
field10906 40 00:01:54 00:03:52 0.491
field10907 40 00:01:54 00:03:50 0.497
field10908 40 00:01:54 00:03:47 0.503
field10909 40 00:01:54 00:03:55 0.485
field10910 40 00:01:54 00:05:39 0.337
field19009_test 15 00:00:42 00:04:44 0.151
field19009 400 00:19:04 00:31:02 0.614
field19010 400 00:19:04 00:30:56 0.616
field18698 400 00:19:04 00:31:02 0.614
field19319 400 00:19:04 00:30:53 0.617
field18699 400 00:19:04 00:30:53 0.617
field19320 400 00:19:04 00:30:56 0.616
field18386 400 00:19:04 00:30:59 0.615
field19628 400 00:19:04 00:36:21 0.524
GB63_dither_test OH 12 00:00:34 00:02:07 0.270
GB63_dither OH 24 00:01:08 00:02:19 0.493
GB62_dither OH 28 00:01:20 00:04:03 0.329
GB61_dither OH 12 00:00:34 00:01:53 0.304
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 20 00:00:57 00:02:12 0.432










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 148:23:35 308:19:14 0.481

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 1781:06:53 913:08:13 867:58:40 243:02:01 208:18:52 208:18:52 208:18:52 104:35:10
Observed 305:53:46
(17.17%)		 82:28:16
(9.03%)		 223:25:30
(25.74%)		 25:21:43
(10.44%)		 55:13:32
(26.51%)		 121:21:04
(58.25%)		 21:29:09
(10.31%)		 104:35:10
(N/A)
Remaining 1475:13:07
(82.83%)		 830:39:57
(90.97%)		 644:33:10
(74.26%)		 217:40:17
(89.56%)		 153:05:20
(73.49%)		 86:57:48
(41.75%)		 186:49:43
(89.69%)		 00:00:00
(N/A)











Camera status (2025/03/30)