PRIME Observation Log 2025/04/28

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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: 2025/04/28
Local observer: Seiya Nakayama
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99981 +- 0.00171 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:23:45
Morning 06:44:55
Science Observation
(Sun altitude < -10°)
Start 18:45:32
End 06:23:05
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 22:09:58
End 06:23:05


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:34:40 11:37:32 0.996
GB Time 08:10:35 08:13:07 0.995
Non-GB Time 03:24:04 03:24:25 0.998


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 524 00:24:58 00:53:25 0.468
GB 4736 03:45:44 08:10:35 0.460
SAAO 515 00:24:32 00:51:01 0.481
OU 515 00:24:32 00:51:01 0.481
NASA 515 00:24:32 00:51:01 0.481
ABC 515 00:24:32 00:51:01 0.481


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 524 00:24:58 00:53:25 0.468
all_sky_grid 2060 01:38:11 03:24:04 0.481
Bulge 4616 03:40:01 07:56:59 0.461
SKY 120 00:05:43 00:13:36 0.420


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 4 00:00:11 00:00:41 0.276
FLAT_test OJ 8 00:00:22 00:02:40 0.143
FLAT OJ 512 00:24:24 00:50:03 0.488
field12730_test 60 00:02:51 00:11:25 0.250
field12730 40 00:01:54 00:03:52 0.491
field12731 40 00:01:54 00:03:50 0.497
field12732 40 00:01:54 00:03:47 0.503
field12733 40 00:01:54 00:03:50 0.497
field12734 40 00:01:54 00:03:50 0.497
field12735 40 00:01:54 00:03:50 0.497
field12736 40 00:01:54 00:03:52 0.491
field12737 40 00:01:54 00:03:52 0.491
field12738 40 00:01:54 00:03:50 0.497
field12739 40 00:01:54 00:03:47 0.503
field12740 40 00:01:54 00:03:47 0.503
field12741 40 00:01:54 00:03:52 0.491
field12742 40 00:01:54 00:03:52 0.491
field12743 40 00:01:54 00:03:52 0.491
field12744 40 00:01:54 00:03:52 0.491
field12745 40 00:01:54 00:03:50 0.497
field12746 40 00:01:54 00:03:47 0.503
field12747 40 00:01:54 00:03:47 0.503
field12748 40 00:01:54 00:03:47 0.503
field12749 40 00:01:54 00:03:50 0.497
field12750 40 00:01:54 00:03:50 0.497
field12751 40 00:01:54 00:03:52 0.491
field12752 40 00:01:54 00:03:52 0.491
field12753 40 00:01:54 00:03:52 0.491
field12754 40 00:01:54 00:03:50 0.497
field12755 40 00:01:54 00:03:47 0.503
field12756 40 00:01:54 00:03:47 0.503
field12757 40 00:01:54 00:03:47 0.503
field12758 40 00:01:54 00:03:50 0.497
field12759 40 00:01:54 00:03:50 0.497
field12760 40 00:01:54 00:03:50 0.497
field12761 40 00:01:54 00:03:52 0.491
field12762 40 00:01:54 00:03:52 0.491
field12763 40 00:01:54 00:03:52 0.491
field12764 40 00:01:54 00:03:47 0.503
field12765 40 00:01:54 00:03:47 0.503
field12766 40 00:01:54 00:03:47 0.503
field12767 40 00:01:54 00:03:50 0.497
field12768 40 00:01:54 00:03:52 0.491
field12769 40 00:01:54 00:03:52 0.491
field12770 40 00:01:54 00:03:52 0.491
field12771 40 00:01:54 00:03:52 0.491
field12772 40 00:01:54 00:03:50 0.497
field12773 40 00:01:54 00:03:47 0.503
field12774 40 00:01:54 00:03:47 0.503
field12775 40 00:01:54 00:03:47 0.503
field12776 40 00:01:54 00:03:47 0.503
field12777 40 00:01:54 00:03:47 0.503
field12778 40 00:01:54 00:03:50 0.497
field12779 40 00:01:54 00:04:46 0.400
GB63_dither_test OH 140 00:06:40 00:21:45 0.307
GB63_dither OH 144 00:06:51 00:14:08 0.485
GB62_dither OH 144 00:06:51 00:14:08 0.485
GB61_dither OH 140 00:06:40 00:14:00 0.476
GB60_dither OH 144 00:06:51 00:14:11 0.484
GB59_dither OH 144 00:06:51 00:14:08 0.485
GB58_dither OH 144 00:06:51 00:14:14 0.482
GB57_dither OH 144 00:06:51 00:13:57 0.492
GB74_dither OH 144 00:06:51 00:14:08 0.485
GB75_dither OH 144 00:06:51 00:14:20 0.479
GB76_dither OH 144 00:06:51 00:14:08 0.485
GB77_dither OH 144 00:06:51 00:15:41 0.437
GB78_dither OH 120 00:05:43 00:11:52 0.482
GB79_dither OH 120 00:05:43 00:11:49 0.484
GB80_dither OH 120 00:05:43 00:11:55 0.480
GB97_dither OH 120 00:05:43 00:11:52 0.482
GB96_dither OH 120 00:05:43 00:11:49 0.484
GB95_dither OH 120 00:05:43 00:11:49 0.483
GB94_dither OH 120 00:05:43 00:11:55 0.480
GB93_dither OH 120 00:05:43 00:11:55 0.480
GB92_dither OH 120 00:05:43 00:11:49 0.484
GB91_dither OH 120 00:05:43 00:11:58 0.478
GB108_dither OH 120 00:05:43 00:11:44 0.487
GB109_dither OH 120 00:05:43 00:11:58 0.478
GB110_dither OH 120 00:05:43 00:11:49 0.484
GB111_dither OH 120 00:05:43 00:11:47 0.485
GB112_dither OH 136 00:06:28 00:20:38 0.314
GB113_dither OH 120 00:05:43 00:11:55 0.480
GB114_dither OH 120 00:05:43 00:11:46 0.485
GB131_dither OH 120 00:05:43 00:11:55 0.480
GB130_dither OH 120 00:05:43 00:11:46 0.485
GB129_dither OH 120 00:05:43 00:11:52 0.482
GB128_dither OH 120 00:05:43 00:12:09 0.471
GB127_dither OH 120 00:05:43 00:15:03 0.380
GB126_dither OH 120 00:05:43 00:11:52 0.482
GB125_dither OH 120 00:05:43 00:12:54 0.443
GCsky 120 00:05:43 00:13:36 0.420










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 161:02:39 314:49:10 0.512

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 1789:55:06 907:49:10 882:05:55 246:59:15 211:42:13 211:42:13 211:42:13 127:23:47
Observed 477:30:37
(26.68%)		 180:51:03
(19.92%)		 296:39:34
(33.63%)		 40:01:05
(16.20%)		 69:52:54
(33.01%)		 150:37:04
(71.15%)		 36:08:30
(17.07%)		 127:23:47
(N/A)
Remaining 1312:24:29
(73.32%)		 726:58:07
(80.08%)		 585:26:21
(66.37%)		 206:58:10
(83.80%)		 141:49:19
(66.99%)		 61:05:09
(28.85%)		 175:33:42
(82.93%)		 00:00:00
(N/A)











Camera status (2025/04/28)



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