PRIME Observation Log 2025/04/12

Return to index
Previous day Next day

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: 2025/04/12
Local observer: Seiya Nakayama, Ryo Ogawa
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00010 +- 0.00110 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:40:50
Morning 06:34:17
Science Observation
(Sun altitude < -10°)
Start 19:02:14
End 06:12:50
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:12:52
End 06:12:50


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:10:48 11:10:36 0.911
GB Time 06:02:50 06:59:58 0.864
Non-GB Time 04:07:58 04:10:37 0.989


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 552 00:26:18 00:50:08 0.525
ALLSKY 2416 01:55:09 04:07:58 0.464
GB 3240 02:34:26 06:02:50 0.426
SAAO 604 00:28:47 01:01:59 0.464
OU 604 00:28:47 01:01:59 0.464
NASA 604 00:28:47 01:01:59 0.464
ABC 604 00:28:47 01:01:59 0.464


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 552 00:26:18 00:50:08 0.525
all_sky_grid 2416 01:55:09 04:07:58 0.464
Bulge 3192 02:32:09 05:56:02 0.427
SKY 48 00:02:17 00:06:47 0.337


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 4 00:00:11 00:00:41 0.276
FLAT_test OY 20 00:00:57 00:04:02 0.236
FLAT OY 528 00:25:10 00:45:24 0.554
field12113_test 28 00:01:20 00:13:18 0.100
field12113 40 00:01:54 00:03:52 0.491
field12114 40 00:01:54 00:03:58 0.480
field12115 40 00:01:54 00:03:52 0.491
field12116 40 00:01:54 00:03:50 0.497
field12117 40 00:01:54 00:03:50 0.497
field12118 40 00:01:54 00:03:47 0.503
field12119 40 00:01:54 00:03:47 0.503
field12120 40 00:01:54 00:03:47 0.503
field12121 40 00:01:54 00:03:47 0.503
field12122 40 00:01:54 00:03:47 0.503
field12123 40 00:01:54 00:03:55 0.485
field12124 40 00:01:54 00:03:52 0.491
field12125 40 00:01:54 00:03:52 0.491
field12126 40 00:01:54 00:03:50 0.497
field12127 40 00:01:54 00:03:52 0.491
field12128 40 00:01:54 00:03:52 0.491
field12129 40 00:01:54 00:03:50 0.497
field12130 40 00:01:54 00:03:47 0.503
field12131 40 00:01:54 00:03:47 0.503
field12132 40 00:01:54 00:03:47 0.503
field12133 40 00:01:54 00:03:47 0.503
field12134 40 00:01:54 00:03:47 0.503
field12135 40 00:01:54 00:03:47 0.503
field12136 40 00:01:54 00:03:50 0.497
field12137 40 00:01:54 00:03:58 0.480
field12138 40 00:01:54 00:03:52 0.491
field12139 40 00:01:54 00:03:50 0.497
field12140 40 00:01:54 00:03:50 0.497
field12141 40 00:01:54 00:03:50 0.497
field12142 40 00:01:54 00:03:50 0.497
field12143 40 00:01:54 00:03:50 0.497
field12144 40 00:01:54 00:03:47 0.503
field12145 40 00:01:54 00:03:47 0.503
field12146 40 00:01:54 00:03:47 0.503
field12147 40 00:01:54 00:03:47 0.503
field12148 40 00:01:54 00:03:47 0.503
field12149 40 00:01:54 00:03:47 0.503
field12150 40 00:01:54 00:04:46 0.400
field6490 72 00:03:25 00:07:00 0.490
field6490_test 36 00:01:42 00:08:02 0.214
field6747 40 00:01:54 00:03:52 0.491
field7007 40 00:01:54 00:03:50 0.497
field7265 40 00:01:54 00:03:47 0.503
field7266 40 00:01:54 00:03:47 0.503
field7267 40 00:01:54 00:03:47 0.503
field7268 40 00:01:54 00:03:47 0.503
field7269 40 00:01:54 00:03:47 0.503
field7270 40 00:01:54 00:03:47 0.503
field7271 40 00:01:54 00:03:50 0.497
field7533 40 00:01:54 00:03:50 0.497
field7534 40 00:01:54 00:03:50 0.497
field7535 40 00:01:54 00:03:50 0.497
field7536 40 00:01:54 00:03:50 0.497
field7537 40 00:01:54 00:03:47 0.503
field7538 40 00:01:54 00:03:52 0.491
field7803 40 00:01:54 00:03:47 0.503
field7804 40 00:01:54 00:03:47 0.503
field7805 40 00:01:54 00:03:58 0.480
field7806 40 00:01:54 00:04:15 0.448
GB63_dither_test OJ 52 00:02:28 00:15:48 0.157
GB63_dither OJ 48 00:02:17 00:04:52 0.470
GB62_dither OJ 48 00:02:17 00:05:00 0.456
GB60_dither OJ 48 00:02:17 00:05:00 0.456
GB59_dither OJ 48 00:02:17 00:05:00 0.456
GB80_dither OJ 84 00:04:00 00:17:31 0.229
GB58_dither OJ 48 00:02:17 00:04:38 0.493
GB57_dither OJ 48 00:02:17 00:04:38 0.493
GB74_dither OJ 48 00:02:17 00:04:32 0.503
GB75_dither OJ 48 00:02:17 00:04:32 0.503
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:32 0.503
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB97_dither OJ 48 00:02:17 00:04:38 0.493
GB96_dither OJ 48 00:02:17 00:04:32 0.503
GB95_dither OJ 48 00:02:17 00:04:38 0.493
GB94_dither OJ 48 00:02:17 00:04:35 0.498
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:35 0.498
GB91_dither OJ 48 00:02:17 00:04:35 0.498
GB108_dither OJ 48 00:02:17 00:04:32 0.503
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:35 0.498
GB112_dither OJ 48 00:02:17 00:04:32 0.503
GB113_dither OJ 48 00:02:17 00:04:35 0.498
GB114_dither OJ 48 00:02:17 00:04:38 0.493
GB131_dither OJ 48 00:02:17 00:04:38 0.493
GB130_dither OJ 48 00:02:17 00:04:32 0.503
GB129_dither OJ 48 00:02:17 00:04:35 0.498
GB128_dither OJ 48 00:02:17 00:04:35 0.498
GB127_dither OJ 48 00:02:17 00:04:38 0.493
GB126_dither OJ 88 00:04:11 00:08:25 0.498
GB125_dither OJ 48 00:02:17 00:04:49 0.474
GCsky 48 00:02:17 00:06:47 0.337
GB63_dither_test OH 28 00:01:20 00:05:52 0.227
GB63_dither OH 48 00:02:17 00:04:43 0.483
GB62_dither OH 48 00:02:17 00:05:00 0.456
GB61_dither OH 48 00:02:17 00:04:41 0.488
GB60_dither OH 48 00:02:17 00:04:41 0.488
GB59_dither OH 48 00:02:17 00:04:46 0.479
GB58_dither OH 48 00:02:17 00:04:41 0.488
GB57_dither OH 48 00:02:17 00:04:38 0.493
GB74_dither OH 48 00:02:17 00:04:46 0.479
GB75_dither OH 48 00:02:17 00:04:43 0.484
GB76_dither OH 48 00:02:17 00:04:41 0.488
GB77_dither OH 48 00:02:17 00:04:43 0.484
GB78_dither OH 48 00:02:17 00:04:41 0.488
GB79_dither OH 48 00:02:17 00:04:41 0.488
GB80_dither OH 48 00:02:17 00:04:43 0.483
GB97_dither OH 48 00:02:17 00:04:41 0.488
GB96_dither OH 72 00:03:25 00:07:05 0.484
GB95_dither OH 72 00:03:25 00:07:05 0.484
GB94_dither OH 72 00:03:25 00:11:37 0.295
GB93_dither OH 36 00:01:42 00:03:48 0.450
GB96_dither_test OH 16 00:00:45 00:03:20 0.229
GB92_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB125_dither OH 24 00:01:08 00:02:19 0.493
GB126_dither OH 24 00:01:08 00:02:24 0.474
GB109_dither OH 24 00:01:08 00:02:19 0.493
GB110_dither OH 24 00:01:08 00:02:24 0.474
GB127_dither OH 24 00:01:08 00:02:21 0.484
GB128_dither OH 24 00:01:08 00:02:33 0.448
GB111_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 32 00:01:31 00:14:48 0.103
GB114_dither OH 24 00:01:08 00:02:38 0.432
GB131_dither OH 24 00:01:08 00:02:30 0.457
GB130_dither OH 48 00:02:17 00:06:33 0.349
GB113_dither OH 24 00:01:08 00:02:27 0.465
GB129_dither OH 24 00:01:08 00:02:58 0.385










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 50:29:36 132:05:09 0.382

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 1770:44:03 902:57:34 867:46:28 242:58:36 208:15:57 208:15:57 208:15:57 115:14:49
Observed 366:57:34
(20.72%)		 114:48:41
(12.72%)		 252:08:52
(29.06%)		 31:51:19
(13.11%)		 61:43:08
(29.63%)		 130:35:40
(62.71%)		 27:58:44
(13.43%)		 115:14:49
(N/A)
Remaining 1403:46:29
(79.28%)		 788:08:53
(87.28%)		 615:37:36
(70.94%)		 211:07:17
(86.89%)		 146:32:49
(70.37%)		 77:40:16
(37.29%)		 180:17:12
(86.57%)		 00:00:00
(N/A)











Camera status (2025/04/12)