PRIME Observation Log 2025/04/01

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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: 2025/04/01
Local observer: Ryo Ogawa
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99999 +- 0.00121 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:54:17
Morning 06:26:57
Science Observation
(Sun altitude < -10°)
Start 19:15:35
End 06:05:37
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:56:06
End 06:05:37


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:19:25 10:50:02 0.584
GB Time 01:32:24 06:09:30 0.250
Non-GB Time 04:47:01 04:40:31 1.023


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 252 00:12:00 00:27:43 0.433
NASA 2388 01:53:49 02:48:34 0.675
GB 868 00:41:22 01:32:24 0.448
SAAO 376 00:17:55 00:39:28 0.454
OU 376 00:17:55 00:39:28 0.454
ABC 376 00:17:55 00:39:28 0.454


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 252 00:12:00 00:27:43 0.433
ToO 2012 01:35:54 02:09:05 0.743
all_sky_grid 1504 01:11:41 02:37:55 0.454
Bulge 868 00:41:22 01:32:24 0.448


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT ZO 4 00:00:11 00:00:41 0.276
FLAT_test OH 8 00:00:22 00:06:10 0.062
FLAT OH 240 00:11:26 00:20:51 0.549
field19009_test 32 00:01:31 00:06:03 0.251
field19009 220 00:10:29 00:18:43 0.560
field19010 220 00:10:29 00:12:25 0.844
field18698 220 00:10:29 00:12:25 0.844
field19319 220 00:10:29 00:12:28 0.841
field18699 220 00:10:29 00:12:22 0.847
field19320 220 00:10:29 00:12:25 0.844
field18386 220 00:10:29 00:12:25 0.844
field19628 220 00:10:29 00:12:31 0.838
field18073 220 00:10:29 00:17:14 0.608
field8587_test 24 00:01:08 00:09:53 0.116
field8587 40 00:01:54 00:03:50 0.497
field8588 40 00:01:54 00:03:47 0.503
field8589 40 00:01:54 00:03:50 0.497
field8590 40 00:01:54 00:03:47 0.503
field8591 40 00:01:54 00:03:47 0.503
field8592 40 00:01:54 00:03:50 0.497
field8593 40 00:01:54 00:03:50 0.497
field8594 40 00:01:54 00:03:52 0.491
field8595 40 00:01:54 00:03:55 0.485
field8600 40 00:01:54 00:03:47 0.503
field8601 40 00:01:54 00:03:50 0.497
field8602 40 00:01:54 00:03:50 0.497
field8603 40 00:01:54 00:03:47 0.503
field8604 40 00:01:54 00:03:47 0.503
field8605 40 00:01:54 00:03:47 0.503
field8606 40 00:01:54 00:03:47 0.503
field8607 40 00:01:54 00:03:47 0.503
field8608 40 00:01:54 00:03:47 0.503
field8609 40 00:01:54 00:03:47 0.503
field8610 40 00:01:54 00:03:47 0.503
field8611 40 00:01:54 00:03:50 0.497
field8612 40 00:01:54 00:03:50 0.497
field8613 40 00:01:54 00:03:50 0.497
field8614 40 00:01:54 00:03:52 0.491
field8615 40 00:01:54 00:03:50 0.497
field8616 40 00:01:54 00:03:52 0.491
field8617 40 00:01:54 00:03:50 0.497
field8618 40 00:01:54 00:03:50 0.497
field8619 40 00:01:54 00:03:47 0.503
field8620 40 00:01:54 00:03:50 0.497
field8621 40 00:01:54 00:03:47 0.503
field8622 40 00:01:54 00:03:47 0.503
field8623 40 00:01:54 00:03:47 0.503
field8624 40 00:01:54 00:04:54 0.388
field2961 40 00:01:54 00:03:47 0.503
field2962 40 00:01:54 00:03:50 0.497
field3146 40 00:01:54 00:09:29 0.201
GB63_dither_test OH 48 00:02:17 00:10:00 0.229
GB63_dither OH 24 00:01:08 00:03:51 0.296
GB62_dither OH 24 00:01:08 00:02:19 0.493
GB61_dither OH 24 00:01:08 00:02:16 0.503
GB60_dither OH 24 00:01:08 00:02:16 0.503
GB59_dither OH 24 00:01:08 00:02:19 0.493
GB58_dither OH 24 00:01:08 00:02:19 0.493
GB57_dither OH 24 00:01:08 00:02:21 0.484
GB74_dither OH 40 00:01:54 00:05:02 0.378
GB75_dither OH 24 00:01:08 00:02:21 0.484
GB76_dither OH 24 00:01:08 00:02:19 0.493
GB77_dither OH 24 00:01:08 00:02:16 0.503
GB78_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:21 0.483
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB95_dither OH 24 00:01:08 00:02:16 0.503
GB94_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:16 0.503
GB92_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:16 0.503
GB108_dither OH 24 00:01:08 00:02:33 0.448
GB109_dither OH 24 00:01:08 00:02:16 0.503
GB110_dither OH 24 00:01:08 00:02:21 0.484
GB111_dither OH 24 00:01:08 00:02:16 0.503
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB113_dither OH 24 00:01:08 00:02:16 0.503
GB114_dither OH 24 00:01:08 00:02:22 0.483
GB131_dither OH 24 00:01:08 00:02:21 0.484
GB130_dither OH 24 00:01:08 00:02:19 0.493
GB129_dither OH 24 00:01:08 00:02:21 0.484
GB128_dither OH 24 00:01:08 00:02:19 0.493
GB127_dither OH 24 00:01:08 00:02:19 0.493
GB126_dither OH 12 00:00:34 00:01:26 0.395










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 06:19:25 10:50:02 0.584

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 1787:11:27 914:14:29 872:56:58 244:25:33 209:30:28 209:30:28 209:30:28 105:46:21
Observed 322:47:24
(18.06%)		 89:41:44
(9.81%)		 233:05:39
(26.70%)		 27:05:30
(11.08%)		 56:57:19
(27.19%)		 125:49:52
(60.06%)		 23:12:56
(11.08%)		 105:46:21
(N/A)
Remaining 1464:24:03
(81.94%)		 824:32:44
(90.19%)		 639:51:18
(73.30%)		 217:20:02
(88.92%)		 152:33:08
(72.81%)		 83:40:35
(39.94%)		 186:17:32
(88.92%)		 00:00:00
(N/A)











Camera status (2025/04/01)



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