PRIME Observation Log 2025/08/14

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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: 2025/08/14
Local observer: Asahi
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00012 +- 0.00153 K
ImageAcquisitionErrors occurred 5 times @
2025-08-14 18:02:09 SAT
2025-08-14 18:03:50 SAT
2025-08-14 18:05:25 SAT
2025-08-14 19:07:58 SAT
2025-08-14 23:26:55 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:31:35
Morning 06:50:37
Science Observation
(Sun altitude < -10°)
Start 18:53:22
End 06:28:52
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:53:22
End 02:34:38


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:36:33 11:35:29 0.484
GB Time 04:36:22 07:41:15 0.599
Non-GB Time 01:00:10 03:54:14 0.257


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 96 00:04:34 00:28:06 0.163
GB 2280 01:48:40 04:36:22 0.393
SAAO 126 00:06:00 00:15:02 0.399
OU 126 00:06:00 00:15:02 0.399
NASA 126 00:06:00 00:15:02 0.399
ABC 126 00:06:00 00:15:02 0.399


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 96 00:04:34 00:28:06 0.163
Bulge 2256 01:47:32 04:33:38 0.393
SKY 24 00:01:08 00:02:44 0.418
all_sky_grid 504 00:24:01 01:00:10 0.399


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OH 16 00:00:45 00:19:18 0.040
FLAT OH 80 00:03:48 00:08:48 0.433
GB76_test OH 96 00:04:34 00:37:15 0.123
GB76_dither OH 192 00:09:09 00:20:00 0.458
GB77_dither OH 192 00:09:09 00:20:50 0.439
GB78_dither OH 192 00:09:09 00:19:37 0.466
GB94_dither OH 192 00:09:09 00:20:58 0.436
GB111_dither OH 192 00:09:09 00:20:39 0.443
GB110_dither OH 192 00:09:09 00:22:37 0.405
GB109_dither OH 96 00:04:34 00:10:07 0.452
GB92_dither OH 48 00:02:17 00:06:33 0.349
GB93_dither OH 48 00:02:17 00:05:00 0.457
GB75_dither OH 96 00:04:34 00:10:38 0.430
GB112_dither OH 96 00:04:34 00:10:59 0.416
GB79_dither OH 72 00:03:25 00:07:56 0.433
GB60_dither OH 48 00:02:17 00:05:03 0.452
GB95_dither OH 48 00:02:17 00:04:55 0.465
GB113_dither OH 48 00:02:17 00:07:23 0.310
GCsky 24 00:01:08 00:02:44 0.418
GB107_dither OH 48 00:02:17 00:04:52 0.470
GB106_dither OH 48 00:02:17 00:04:43 0.484
GB105_dither OH 48 00:02:17 00:05:00 0.456
GB88_dither OH 48 00:02:17 00:04:49 0.474
GB89_dither OH 48 00:02:17 00:06:44 0.339
GB90_dither OH 24 00:01:08 00:02:35 0.440
GB73_dither OH 24 00:01:08 00:02:21 0.484
GB72_dither OH 24 00:01:08 00:02:20 0.487
GB71_dither OH 24 00:01:08 00:02:31 0.453
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:21 0.484
field23932_test 24 00:01:08 00:08:20 0.137
field23932 40 00:01:54 00:04:57 0.385
field23933 40 00:01:54 00:04:18 0.443
field22547 40 00:01:54 00:03:57 0.481
field22548 40 00:01:54 00:04:32 0.419
field23385 40 00:01:54 00:04:29 0.425
field23386 40 00:01:54 00:04:09 0.458
field23387 40 00:01:54 00:03:55 0.485
field23659 40 00:01:54 00:03:50 0.497
field23660 40 00:01:54 00:04:04 0.469
field23661 40 00:01:54 00:03:58 0.480
field23662 40 00:01:54 00:05:19 0.358
field23930 40 00:01:54 00:04:17 0.445










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 100:30:17 164:30:48 0.611

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 1915:07:45 996:50:55 918:16:50 257:07:06 220:23:14 220:23:14 220:23:14 171:59:11
Observed 1257:02:10
(65.64%)		 806:21:30
(80.89%)		 450:40:39
(49.08%)		 92:05:22
(35.82%)		 103:23:08
(46.91%)		 187:10:12
(84.93%)		 68:01:56
(30.87%)		 171:59:11
(N/A)
Remaining 658:05:35
(34.36%)		 190:29:24
(19.11%)		 467:36:11
(50.92%)		 165:01:44
(64.18%)		 117:00:06
(53.09%)		 33:13:01
(15.07%)		 152:21:17
(69.13%)		 00:00:00
(N/A)











Camera status (2025/08/14)



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