PRIME Observation Log 2025/08/31

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: 2025/08/31
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00005 +- 0.00128 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:41:51
Morning 06:31:26
Science Observation
(Sun altitude < -10°)
Start 19:03:15
End 06:10:04
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:03:15
End 01:27:47


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:29:19 11:06:48 0.854
GB Time 06:04:01 06:24:32 0.947
Non-GB Time 03:25:17 04:42:16 0.727


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 204 00:09:43 00:29:57 0.325
GB 3648 02:53:53 06:04:01 0.478
SAAO 1280 01:01:00 01:47:04 0.570
OU 340 00:16:12 00:32:44 0.495
NASA 340 00:16:12 00:32:44 0.495
ABC 340 00:16:12 00:32:44 0.495


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 204 00:09:43 00:29:57 0.325
Bulge 3576 02:50:27 05:56:24 0.478
SKY 72 00:03:25 00:07:36 0.451
all_sky_grid 2080 01:39:08 02:58:18 0.556
ToO 220 00:10:29 00:26:59 0.389


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 4 00:00:11 00:12:34 0.015
FLAT OY 200 00:09:32 00:17:23 0.548
GB76_test OH 24 00:01:08 00:05:18 0.215
GB76_dither OH 336 00:16:00 00:32:58 0.486
GB77_dither OH 336 00:16:00 00:33:41 0.475
GB78_dither OH 312 00:14:52 00:30:34 0.486
GB94_dither OH 312 00:14:52 00:30:39 0.485
GB111_dither OH 312 00:14:52 00:30:42 0.484
GB110_dither OH 312 00:14:52 00:30:48 0.483
GB109_dither OH 168 00:08:00 00:16:14 0.493
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:33 0.448
GB74_dither OH 24 00:01:08 00:02:30 0.456
GB92_dither OH 96 00:04:34 00:09:13 0.496
GB93_dither OH 96 00:04:34 00:09:25 0.486
GB75_dither OH 168 00:08:00 00:16:19 0.490
GB73_dither OH 24 00:01:08 00:02:16 0.503
GB72_dither OH 24 00:01:08 00:02:19 0.493
GB71_dither OH 24 00:01:08 00:02:21 0.484
GB88_dither OH 24 00:01:08 00:02:16 0.503
GB89_dither OH 24 00:01:08 00:02:19 0.493
GB90_dither OH 24 00:01:08 00:03:20 0.342
GB79_dither OH 144 00:06:51 00:15:13 0.451
GB112_dither OH 144 00:06:51 00:14:14 0.482
GB60_dither OH 72 00:03:25 00:07:05 0.484
GB95_dither OH 72 00:03:25 00:07:05 0.483
GB113_dither OH 72 00:03:25 00:07:03 0.487
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:19 0.493
GCsky 72 00:03:25 00:07:36 0.451
GB83_dither OH 24 00:01:08 00:02:16 0.503
GB82_dither OH 24 00:01:08 00:02:19 0.493
GB81_dither OH 24 00:01:08 00:02:16 0.503
GB98_dither OH 24 00:01:08 00:02:19 0.493
GB99_dither OH 24 00:01:08 00:02:16 0.503
GB100_dither OH 24 00:01:08 00:02:21 0.484
GB117_dither OH 24 00:01:08 00:02:21 0.483
GB116_dither OH 24 00:01:08 00:02:19 0.493
GB115_dither OH 24 00:01:08 00:02:27 0.465
GB107_dither OH 24 00:01:08 00:02:19 0.493
GB106_dither OH 24 00:01:08 00:02:21 0.484
GB105_dither OH 24 00:01:08 00:02:24 0.474
field1952_test 20 00:00:57 00:05:04 0.188
field1811_test 70 00:03:20 00:11:56 0.279
field1811 150 00:07:09 00:15:02 0.475
field1525_test 16 00:00:45 00:02:40 0.284
field1525 684 00:32:36 00:39:35 0.823
field13836 40 00:01:54 00:03:52 0.491
field13837 40 00:01:54 00:03:50 0.497
field13838 40 00:01:54 00:03:50 0.497
field13839 40 00:01:54 00:03:52 0.491
field13840 40 00:01:54 00:03:55 0.485
field13841 40 00:01:54 00:03:52 0.491
field13842 40 00:01:54 00:03:50 0.497
field13843 40 00:01:54 00:03:47 0.503
field13844 40 00:01:54 00:03:47 0.503
field13845 40 00:01:54 00:03:50 0.497
field13846 40 00:01:54 00:03:50 0.497
field13847 40 00:01:54 00:03:50 0.497
field13848 40 00:01:54 00:03:50 0.497
field13849 40 00:01:54 00:03:47 0.503
field13850 40 00:01:54 00:03:50 0.497
field13851 40 00:01:54 00:03:52 0.491
field13852 40 00:01:54 00:03:50 0.497
field13853 40 00:01:54 00:03:52 0.491
field13854 40 00:01:54 00:03:50 0.497
field13855 40 00:01:54 00:03:50 0.497
field13856 40 00:01:54 00:03:58 0.480
field13857 40 00:01:54 00:03:50 0.497
field13858 40 00:01:54 00:03:47 0.504
field13859 40 00:01:54 00:03:47 0.503
field13860 40 00:01:54 00:03:50 0.497
field13861 40 00:01:54 00:03:50 0.497
field13862 40 00:01:54 00:03:50 0.497
field13863 40 00:01:54 00:03:58 0.480
field13864 40 00:01:54 00:03:52 0.491
field13865 40 00:01:54 00:03:50 0.497
field13866 40 00:01:54 00:03:50 0.497
field13867 40 00:01:54 00:03:47 0.503
field13868 40 00:01:54 00:03:47 0.503
field13869 40 00:01:54 00:04:05 0.465










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 161:02:39 338:08:53 0.476
May 244:24:55 372:31:50 0.656
Jun 209:59:39 370:50:11 0.566
Jul 224:49:02 377:25:14 0.596
Aug 230:19:16 357:22:01 0.644

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 1948:31:07 1012:54:44 935:36:23 261:58:11 224:32:43 224:32:43 224:32:43 180:26:41
Observed 1386:51:08
(71.17%)		 882:00:49
(87.08%)		 504:50:18
(53.96%)		 115:49:33
(44.21%)		 112:25:18
(50.07%)		 199:31:20
(88.86%)		 77:04:06
(34.32%)		 180:26:41
(N/A)
Remaining 561:39:58
(28.83%)		 130:53:54
(12.92%)		 430:46:04
(46.04%)		 146:08:37
(55.79%)		 112:07:25
(49.93%)		 25:01:23
(11.14%)		 147:28:37
(65.68%)		 00:00:00
(N/A)











Camera status (2025/08/31)



Return to index
Previous day Next day