PRIME Observation Log 2025/04/06

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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: 2025/04/06
Local observer: Ryo Ogawa
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00004 +- 0.00702 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:48:03
Morning 06:30:18
Science Observation
(Sun altitude < -10°)
Start 19:09:22
End 06:08:56
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:36:27
End 06:08:56


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:48:28 10:59:34 0.346
GB Time 02:03:15 06:32:29 0.314
Non-GB Time 01:45:13 04:27:04 0.394


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 132 00:06:17 00:23:39 0.266
GB 1024 00:48:48 02:03:15 0.396
SAAO 238 00:11:20 00:26:18 0.431
OU 238 00:11:20 00:26:18 0.431
NASA 238 00:11:20 00:26:18 0.431
ABC 238 00:11:20 00:26:18 0.431


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
calibration 4 00:00:11 00:00:41 0.276
TWILIGHT 128 00:06:06 00:22:57 0.266
all_sky_grid 952 00:45:22 01:45:13 0.431
Bulge 1024 00:48:48 02:03:15 0.396


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
LSS_H_test 4 00:00:11 00:00:41 0.276
FLAT_test OH 8 00:00:22 00:04:02 0.094
FLAT OH 120 00:05:43 00:18:55 0.302
field10017_test 4 00:00:11 00:01:24 0.136
field10017 40 00:01:54 00:03:50 0.497
field10018 40 00:01:54 00:03:50 0.497
field10019 40 00:01:54 00:03:47 0.503
field10020 40 00:01:54 00:03:47 0.503
field10021 40 00:01:54 00:03:47 0.503
field10022 40 00:01:54 00:03:47 0.503
field10023 40 00:01:54 00:03:47 0.503
field10024 40 00:01:54 00:03:47 0.503
field10025 40 00:01:54 00:03:47 0.503
field10026 40 00:01:54 00:03:52 0.491
field10027 40 00:01:54 00:03:52 0.491
field10028 40 00:01:54 00:03:50 0.497
field10029 40 00:01:54 00:03:50 0.497
field10030 40 00:01:54 00:03:50 0.497
field10031 40 00:01:54 00:03:47 0.503
field10032 40 00:01:54 00:03:47 0.503
field10033 40 00:01:54 00:03:47 0.503
field10034 40 00:01:54 00:03:50 0.497
field10035 40 00:01:54 00:03:50 0.497
field10036 40 00:01:54 00:16:29 0.116
field10037 48 00:02:17 00:05:03 0.452
field10038 40 00:01:54 00:03:47 0.503
field10039 40 00:01:54 00:03:47 0.503
field10040 20 00:00:57 00:02:12 0.432
GB63_dither_test OJ 40 00:01:54 00:16:28 0.116
GB63_dither_test OY 28 00:01:20 00:05:30 0.243
GB63_dither OJ 72 00:03:25 00:07:36 0.451
GB62_dither OJ 68 00:03:14 00:06:50 0.474
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:04:35 0.498
GB59_dither OJ 48 00:02:17 00:04:38 0.493
GB58_dither OJ 48 00:02:17 00:04:35 0.498
GB57_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:32 0.503
GB78_dither OJ 48 00:02:17 00:05:14 0.436
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB80_dither OJ 48 00:02:17 00:04:41 0.488
GB97_dither OJ 88 00:04:11 00:14:41 0.286
GB97_dither_test OJ 12 00:00:34 00:02:28 0.231
GB96_dither OJ 48 00:02:17 00:04:38 0.493
GB95_dither OJ 48 00:02:17 00:04:41 0.488
GB94_dither OJ 44 00:02:05 00:04:28 0.468










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 32:03:16 65:28:54 0.490

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 1785:35:51 912:30:51 873:05:00 244:27:48 209:32:24 209:32:24 209:32:24 109:28:05
Observed 348:31:14
(19.52%)		 103:56:22
(11.39%)		 244:34:52
(28.01%)		 29:57:49
(12.26%)		 59:49:38
(28.55%)		 128:42:10
(61.42%)		 26:05:14
(12.45%)		 109:28:05
(N/A)
Remaining 1437:04:37
(80.48%)		 808:34:28
(88.61%)		 628:30:08
(71.99%)		 214:29:59
(87.74%)		 149:42:46
(71.45%)		 80:50:13
(38.58%)		 183:27:09
(87.55%)		 00:00:00
(N/A)











Camera status (2025/04/06)



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