PRIME Observation Log 2025/03/28

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Observation Log (Time is in UT)

Date: 2025/03/28
Local observer: Ryo Ogawa
Remote observer: Kansuke, Seiya
Weather: clear
Comment:
Detector Temperature: 114.00010 +- 0.00173 K
ImageAcquisitionErrors occurred 1 times @
2025-03-28 19:29:20 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:59:23
Morning 06:24:14
Science Observation
(Sun altitude < -10°)
Start 19:20:41
End 06:02:54
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:11:50
End 06:02:54


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:50:47 10:42:12 1.013
GB Time 05:58:13 05:51:04 1.020
Non-GB Time 04:52:34 04:51:08 1.005


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.)
ALLSKY 1048 00:49:57 02:01:07 0.412
CALIB 388 00:18:29 00:39:56 0.463
NASA 2430 01:55:49 03:21:43 0.574
GB 3268 02:35:46 05:58:13 0.435
SAAO 262 00:12:29 00:30:16 0.412
OU 262 00:12:29 00:30:16 0.412
ABC 262 00:12:29 00:30:16 0.412


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 1048 00:49:57 02:01:07 0.412
TWILIGHT 388 00:18:29 00:39:56 0.463
ToO 2168 01:43:20 02:51:26 0.603
Bulge 3196 02:32:20 05:50:17 0.435
SKY 72 00:03:25 00:07:56 0.432


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field4578 4 00:00:11 00:00:41 0.276
FLAT_test OJ 8 00:00:22 00:03:36 0.106
FLAT OJ 380 00:18:06 00:36:20 0.498
field19009_test 32 00:01:31 00:10:33 0.145
field19009 242 00:11:32 00:26:48 0.430
field19010 220 00:10:29 00:12:53 0.813
field18698_test 4 00:00:11 00:00:42 0.270
field18698 242 00:11:32 00:13:56 0.827
field19319_test 44 00:02:05 00:02:59 0.702
field19319 220 00:10:29 00:12:14 0.857
field18699_test 8 00:00:22 00:01:47 0.214
field18699 220 00:10:29 00:13:15 0.791
field19320_test 16 00:00:45 00:04:07 0.185
field19320 220 00:10:29 00:13:01 0.805
field18386_test 16 00:00:45 00:03:42 0.206
field18386 220 00:10:29 00:13:13 0.793
field19628_test 4 00:00:11 00:00:45 0.253
field19628 220 00:10:29 00:12:53 0.813
field18073_test 20 00:00:57 00:04:24 0.216
field18073 220 00:10:29 00:24:06 0.435
field7532_test 68 00:03:14 00:18:57 0.171
field7532 40 00:01:54 00:03:50 0.497
field7802 40 00:01:54 00:03:52 0.491
field8352 40 00:01:54 00:03:47 0.503
field8914 40 00:01:54 00:03:47 0.503
field9199 40 00:01:54 00:03:52 0.491
field9487 40 00:01:54 00:04:09 0.458
field4579 40 00:01:54 00:03:50 0.497
field5031 40 00:01:54 00:03:47 0.503
field5032 40 00:01:54 00:04:20 0.438
field5263_test 16 00:00:45 00:05:15 0.145
field5263 40 00:01:54 00:03:47 0.503
field5264 40 00:01:54 00:04:01 0.474
field5500 40 00:01:54 00:04:04 0.469
field5501 40 00:01:54 00:03:55 0.485
field5986 40 00:01:54 00:04:34 0.416
field5987 40 00:01:54 00:04:01 0.474
field5988 40 00:01:54 00:04:07 0.463
field6488 40 00:01:54 00:03:55 0.486
field6489 40 00:01:54 00:03:50 0.497
field6744 40 00:01:54 00:03:50 0.497
field6745 40 00:01:54 00:03:55 0.485
field6746 40 00:01:54 00:03:51 0.494
field7004 40 00:01:54 00:03:59 0.477
field7005 40 00:01:54 00:04:04 0.469
field7006 40 00:01:54 00:04:57 0.385
GB63_dither_test OH 36 00:01:42 00:15:55 0.108
GB63 OH 12 00:00:34 00:01:27 0.391
GB63_dither OH 96 00:04:34 00:09:30 0.481
GB62_dither OH 96 00:04:34 00:09:22 0.488
GB61_dither OH 96 00:04:34 00:09:27 0.484
GB60_dither OH 96 00:04:34 00:09:16 0.493
GB59_dither OH 96 00:04:34 00:09:33 0.479
GB58_dither OH 96 00:04:34 00:11:59 0.382
GB57_dither OH 96 00:04:34 00:09:55 0.461
GB74_dither OH 96 00:04:34 00:09:16 0.493
GB75_dither OH 96 00:04:34 00:09:16 0.493
GB76_dither OH 96 00:04:34 00:09:30 0.481
GB77_dither OH 96 00:04:34 00:09:27 0.484
GB78_dither OH 96 00:04:34 00:09:19 0.491
GB79_dither OH 96 00:04:34 00:09:25 0.486
GB80_dither OH 96 00:04:34 00:09:33 0.479
GB97_dither OH 96 00:04:34 00:09:50 0.465
GB96_dither OH 96 00:04:34 00:09:27 0.484
GB95_dither OH 96 00:04:34 00:09:33 0.479
GB94_dither OH 96 00:04:34 00:09:33 0.479
GB93_dither OH 96 00:04:34 00:09:22 0.488
GB92_dither OH 96 00:04:34 00:09:44 0.470
GB91_dither OH 96 00:04:34 00:09:30 0.481
GB108_dither OH 96 00:04:34 00:09:28 0.483
GB109_dither OH 100 00:04:46 00:17:35 0.271
GB110_dither OH 72 00:03:25 00:07:03 0.487
GB111_dither OH 72 00:03:25 00:07:03 0.487
GB112_dither OH 72 00:03:25 00:07:00 0.490
GB113_dither OH 72 00:03:25 00:07:03 0.487
GB114_dither OH 72 00:03:25 00:07:00 0.490
GB131_dither OH 72 00:03:25 00:07:00 0.490
GB130_dither OH 72 00:03:25 00:07:00 0.490
GB129_dither OH 72 00:03:25 00:07:00 0.490
GB128_dither OH 72 00:03:25 00:06:57 0.493
GB127_dither OH 72 00:03:25 00:07:05 0.484
GB126_dither OH 96 00:04:34 00:15:01 0.305
GB125_dither OH 96 00:04:34 00:11:42 0.391
GCsky 72 00:03:25 00:07:56 0.432
GB125_dither ZH 24 00:01:08 00:06:53 0.166










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 132:44:03 286:48:54 0.463

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 1776:12:32 912:47:41 863:24:51 241:45:21 207:13:09 207:13:09 207:13:09 103:36:43
Observed 290:14:15
(16.34%)		 76:09:44
(8.34%)		 214:04:30
(24.79%)		 24:05:56
(9.97%)		 53:57:45
(26.04%)		 115:47:27
(55.88%)		 20:13:21
(9.76%)		 103:36:43
(N/A)
Remaining 1485:58:17
(83.66%)		 836:37:56
(91.66%)		 649:20:20
(75.21%)		 217:39:25
(90.03%)		 153:15:24
(73.96%)		 91:25:42
(44.12%)		 186:59:48
(90.24%)		 00:00:00
(N/A)











Camera status (2025/03/28)