PRIME Observation Log 2025/04/27

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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: 2025/04/27
Local observer: Seiya Nakayama
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00009 +- 0.00105 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:24:42
Morning 06:44:15
Science Observation
(Sun altitude < -10°)
Start 18:46:28
End 06:22:27
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 22:13:54
End 06:22:27


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:34:37 11:35:59 0.998
GB Time 08:05:05 08:08:33 0.993
Non-GB Time 03:29:32 03:27:25 1.010


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 568 00:27:04 00:53:03 0.510
GB 4496 03:34:18 08:05:05 0.442
SAAO 541 00:25:47 00:52:23 0.492
OU 541 00:25:47 00:52:23 0.492
NASA 541 00:25:47 00:52:23 0.492
ABC 541 00:25:47 00:52:23 0.492


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 568 00:27:04 00:53:03 0.510
all_sky_grid 2164 01:43:09 03:29:32 0.492
Bulge 4424 03:30:52 07:55:39 0.443
SKY 72 00:03:25 00:09:26 0.364


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 36 00:01:42 00:06:40 0.257
FLAT OH 528 00:25:10 00:45:40 0.551
field10620_test 44 00:02:05 00:06:35 0.318
field10620 40 00:01:54 00:03:47 0.503
field10621 40 00:01:54 00:03:47 0.503
field10622 40 00:01:54 00:03:47 0.503
field10623 40 00:01:54 00:03:52 0.491
field10624 40 00:01:54 00:03:52 0.491
field10625 40 00:01:54 00:03:50 0.497
field10626 40 00:01:54 00:03:50 0.497
field10627 40 00:01:54 00:03:52 0.491
field10628 40 00:01:54 00:03:50 0.497
field10629 40 00:01:54 00:03:50 0.497
field10630 40 00:01:54 00:03:47 0.503
field10631 40 00:01:54 00:03:47 0.503
field10632 40 00:01:54 00:03:47 0.503
field10633 40 00:01:54 00:03:47 0.503
field10634 40 00:01:54 00:03:47 0.503
field10635 40 00:01:54 00:03:47 0.503
field10636 40 00:01:54 00:03:47 0.503
field10637 40 00:01:54 00:03:47 0.503
field10638 40 00:01:54 00:03:47 0.503
field10639 40 00:01:54 00:03:47 0.503
field10640 40 00:01:54 00:03:47 0.503
field10641 40 00:01:54 00:03:50 0.497
field10642 40 00:01:54 00:03:52 0.491
field10643 40 00:01:54 00:03:52 0.491
field10644 40 00:01:54 00:03:50 0.497
field10645 40 00:01:54 00:03:52 0.491
field10646 40 00:01:54 00:03:52 0.491
field10647 40 00:01:54 00:03:47 0.503
field10648 40 00:01:54 00:03:47 0.503
field10649 40 00:01:54 00:03:47 0.503
field10650 40 00:01:54 00:03:47 0.503
field10651 40 00:01:54 00:03:47 0.503
field10652 40 00:01:54 00:03:47 0.503
field10653 40 00:01:54 00:03:47 0.503
field10654 40 00:01:54 00:03:47 0.503
field10655 40 00:01:54 00:03:50 0.497
field10656 40 00:01:54 00:03:50 0.497
field10657 40 00:01:54 00:03:50 0.497
field10658 40 00:01:54 00:03:50 0.497
field10659 40 00:01:54 00:03:47 0.503
field10660 40 00:01:54 00:03:47 0.503
field10661 40 00:01:54 00:03:47 0.503
field10662 40 00:01:54 00:03:47 0.503
field10663 40 00:01:54 00:03:50 0.497
field10664 40 00:01:54 00:03:55 0.485
field10665 40 00:01:54 00:03:52 0.491
field10666 40 00:01:54 00:03:52 0.491
field10667 40 00:01:54 00:03:52 0.491
field10668 40 00:01:54 00:03:50 0.497
field10669 40 00:01:54 00:03:50 0.497
field10670 40 00:01:54 00:03:50 0.497
field10671 40 00:01:54 00:03:50 0.497
field10672 40 00:01:54 00:04:12 0.453
GB63_dither_test OJ 100 00:04:46 00:15:10 0.314
GB63_dither OJ 48 00:02:17 00:04:32 0.503
GB62_dither OJ 48 00:02:17 00:04:38 0.493
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:16:43 0.137
GB59_dither_test OJ 16 00:00:45 00:03:06 0.246
GB59_dither OJ 96 00:04:34 00:09:08 0.501
GB58_dither OJ 48 00:02:17 00:04:32 0.503
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 00:04:32 0.503
GB76_dither OJ 48 00:02:17 00:04:38 0.493
GB77_dither OJ 48 00:02:17 00:04:38 0.493
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB79_dither OJ 48 00:02:17 00:04:32 0.503
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:32 0.503
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB93_dither OJ 48 00:02:17 00:04:32 0.503
GB92_dither OJ 48 00:02:17 00:04:35 0.498
GB91_dither OJ 48 00:02:17 00:04:38 0.493
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:32 0.503
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:32 0.503
GB114_dither OJ 48 00:02:17 00:04:35 0.498
GB131_dither OJ 48 00:02:17 00:04:35 0.498
GB130_dither OJ 48 00:02:17 00:04:38 0.493
GB129_dither OJ 48 00:02:17 00:04:32 0.503
GB128_dither OJ 48 00:02:17 00:04:38 0.493
GB127_dither OJ 48 00:02:17 00:04:35 0.498
GB126_dither OJ 48 00:02:17 00:04:32 0.503
GB125_dither OJ 48 00:02:17 00:04:49 0.474
GCsky 72 00:03:25 00:09:26 0.364
GB63_dither_test OH 60 00:02:51 00:13:40 0.209
GB63_dither OH 72 00:03:25 00:07:05 0.483
GB62_dither OH 72 00:03:25 00:07:05 0.484
GB61_dither OH 72 00:03:25 00:07:05 0.484
GB60_dither OH 72 00:03:25 00:07:00 0.490
GB59_dither OH 72 00:03:25 00:07:03 0.487
GB58_dither OH 72 00:03:25 00:07:05 0.484
GB57_dither OH 72 00:03:25 00:07:11 0.477
GB74_dither OH 72 00:03:25 00:07:03 0.487
GB75_dither OH 72 00:03:25 00:06:57 0.493
GB76_dither OH 72 00:03:25 00:07:03 0.487
GB77_dither OH 72 00:03:25 00:07:03 0.487
GB78_dither OH 72 00:03:25 00:18:04 0.190
GB79_dither OH 72 00:03:25 00:08:01 0.427
GB80_dither OH 72 00:03:25 00:07:45 0.443
GB97_dither OH 72 00:03:25 00:08:01 0.427
GB96_dither OH 72 00:03:25 00:07:28 0.459
GB95_dither OH 72 00:03:25 00:07:31 0.456
GB94_dither OH 72 00:03:25 00:07:28 0.459
GB93_dither OH 72 00:03:25 00:07:14 0.474
GB92_dither OH 72 00:03:25 00:07:08 0.480
GB91_dither OH 72 00:03:25 00:07:05 0.484
GB108_dither OH 72 00:03:25 00:07:11 0.477
GB109_dither OH 72 00:03:25 00:07:17 0.471
GB110_dither OH 72 00:03:25 00:07:05 0.484
GB111_dither OH 72 00:03:25 00:07:22 0.465
GB112_dither OH 72 00:03:25 00:07:11 0.477
GB113_dither OH 72 00:03:25 00:07:05 0.484
GB114_dither OH 72 00:03:25 00:07:00 0.490
GB131_dither OH 72 00:03:25 00:07:11 0.477
GB130_dither OH 72 00:03:25 00:07:03 0.487
GB129_dither OH 72 00:03:25 00:07:05 0.484
GB128_dither OH 72 00:03:25 00:07:08 0.480
GB127_dither OH 72 00:03:25 00:07:03 0.487
GB126_dither OH 72 00:03:25 00:07:03 0.487
GB125_dither OH 72 00:03:25 00:09:45 0.352










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 149:27:59 303:11:37 0.493

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 1784:09:12 903:45:08 880:24:03 246:30:44 211:17:46 211:17:46 211:17:46 126:30:22
Observed 465:55:56
(26.12%)		 172:40:27
(19.11%)		 293:15:29
(33.31%)		 39:10:03
(15.89%)		 69:01:52
(32.67%)		 149:46:02
(70.88%)		 35:17:29
(16.70%)		 126:30:22
(N/A)
Remaining 1318:13:15
(73.88%)		 731:04:41
(80.89%)		 587:08:34
(66.69%)		 207:20:40
(84.11%)		 142:15:53
(67.33%)		 61:31:43
(29.12%)		 176:00:17
(83.30%)		 00:00:00
(N/A)











Camera status (2025/04/27)



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