PRIME Observation Log 2025/08/24

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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: 2025/08/24
Local observer: Asahi
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00005 +- 0.00154 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:37:39
Morning 06:39:48
Science Observation
(Sun altitude < -10°)
Start 18:59:11
End 06:18:18
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:59:11
End 01:55:19


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:39:32 11:19:07 0.677
GB Time 06:37:03 06:56:08 0.954
Non-GB Time 01:02:29 04:22:59 0.238


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 160 00:07:37 00:32:54 0.232
GB 3952 03:08:22 06:37:03 0.474
SAAO 710 00:33:50 01:02:29 0.542


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 160 00:07:37 00:32:54 0.232
Bulge 3856 03:03:48 06:26:09 0.476
SKY 96 00:04:34 00:10:54 0.419
ToO 215 00:10:14 00:29:27 0.348
all_sky_grid 495 00:23:35 00:33:01 0.714


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 16 00:00:45 00:16:55 0.045
FLAT OY 144 00:06:51 00:15:58 0.430
GB80_test OH 16 00:00:45 00:04:30 0.169
GB80_dither OH 24 00:01:08 00:02:21 0.483
GB97_dither OH 24 00:01:08 00:02:24 0.474
GB114_dither OH 24 00:01:08 00:02:21 0.483
GB113_dither OH 72 00:03:25 00:07:03 0.487
GB96_dither OH 24 00:01:08 00:02:27 0.465
GB79_dither OH 120 00:05:43 00:12:20 0.463
GB78_dither OH 216 00:10:17 00:21:12 0.486
GB95_dither OH 72 00:03:25 00:07:00 0.490
GB112_dither OH 120 00:05:43 00:11:44 0.487
GB111_dither OH 216 00:10:17 00:21:17 0.484
GB94_dither OH 216 00:10:17 00:21:06 0.488
GB77_dither OH 216 00:10:17 00:21:23 0.481
GB60_dither OH 72 00:03:25 00:07:00 0.490
GB76_dither OH 216 00:10:17 00:21:26 0.480
GB93_dither OH 72 00:03:25 00:07:14 0.474
GB110_dither OH 216 00:10:17 00:21:23 0.481
GB109_dither OH 120 00:05:43 00:11:44 0.487
GB92_dither OH 72 00:03:25 00:07:11 0.477
GB75_dither OH 120 00:05:43 00:11:41 0.489
GB74_dither OH 24 00:01:08 00:02:24 0.474
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB107_dither OH 24 00:01:08 00:02:21 0.484
GB90_dither OH 24 00:01:08 00:02:24 0.474
GB73_dither OH 24 00:01:08 00:02:16 0.503
GB72_dither OH 24 00:01:08 00:02:24 0.474
GB89_dither OH 24 00:01:08 00:02:24 0.474
GB106_dither OH 24 00:01:08 00:02:16 0.503
GB105_dither OH 24 00:01:08 00:02:21 0.484
GB88_dither OH 24 00:01:08 00:02:27 0.465
GB71_dither OH 24 00:01:08 00:03:26 0.333
GCsky 96 00:04:34 00:10:54 0.419
GB60_test OJ 24 00:01:08 00:03:46 0.304
GB60_dither OJ 48 00:02:17 00:07:43 0.296
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:32 0.503
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:32 0.503
GB74_dither OJ 48 00:02:17 00:04:41 0.488
GB97_dither OJ 48 00:02:17 00:04:32 0.503
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:32 0.503
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 00:04:41 0.488
GB114_dither OJ 48 00:02:17 00:04:32 0.503
GB113_dither OJ 48 00:02:17 00:04:35 0.498
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:32 0.503
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB109_dither OJ 48 00:02:17 00:04:41 0.488
GB108_dither OJ 48 00:02:17 00:04:41 0.488
GB73_dither OJ 48 00:02:17 00:04:35 0.498
GB72_dither OJ 48 00:02:17 00:04:32 0.503
GB89_dither OJ 48 00:02:17 00:04:38 0.493
GB88_dither OJ 48 00:02:17 00:04:35 0.498
GB105_dither OJ 48 00:02:17 00:05:17 0.432
field1811_test 50 00:02:23 00:10:45 0.222
field1811 165 00:07:51 00:18:41 0.421
field1525_test 20 00:00:57 00:06:05 0.156
field1525 475 00:22:38 00:26:55 0.841










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 163:15:04 278:57:02 0.585

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 1920:39:25 997:22:15 923:17:09 258:31:12 221:35:19 221:35:19 221:35:19 177:09:07
Observed 1319:46:56
(68.72%)		 843:15:03
(84.55%)		 476:31:52
(51.61%)		 103:49:16
(40.16%)		 106:59:15
(48.28%)		 194:05:17
(87.59%)		 71:38:03
(32.33%)		 177:09:07
(N/A)
Remaining 600:52:28
(31.28%)		 154:07:11
(15.45%)		 446:45:16
(48.39%)		 154:41:55
(59.84%)		 114:36:04
(51.72%)		 27:30:01
(12.41%)		 149:57:15
(67.67%)		 00:00:00
(N/A)











Camera status (2025/08/24)



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