PRIME Observation Log 2025/08/13

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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: 2025/08/13
Local observer: Asahi
Remote observer:
Weather: clear, cloudy
Comment:
Detector Temperature: 113.99990 +- 0.00234 K
ImageAcquisitionErrors occurred 1 times @
2025-08-13 18:39:42 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:30:58
Morning 06:51:37
Science Observation
(Sun altitude < -10°)
Start 18:52:48
End 06:29:50
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:52:48
End 02:38:34


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:43:21 11:37:02 0.493
GB Time 05:43:21 07:45:46 0.737
Non-GB Time 00:00:00 03:51:16 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 156 00:07:26 00:22:42 0.327
GB 3192 02:32:09 05:43:21 0.443


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 156 00:07:26 00:22:42 0.327
Bulge 3120 02:28:43 05:34:04 0.445
SKY 72 00:03:25 00:09:17 0.369


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 40 00:01:54 00:05:00 0.381
FLAT OY 116 00:05:31 00:17:42 0.312
GB60_test OY 40 00:01:54 00:11:02 0.173
GB60_dither OY 96 00:04:34 00:10:35 0.432
GB74_dither OY 48 00:02:17 00:04:38 0.493
GB75_dither OY 48 00:02:17 00:04:35 0.498
GB76_dither OY 48 00:02:17 00:05:06 0.448
GB77_dither OY 48 00:02:17 00:05:00 0.456
GB78_dither OY 48 00:02:17 00:04:35 0.498
GB79_dither OY 48 00:02:17 00:04:57 0.461
GB80_dither OY 48 00:02:17 00:04:46 0.479
GB97_dither OY 48 00:02:17 00:04:38 0.493
GB114_dither OY 48 00:02:17 00:04:41 0.488
GB113_dither OY 48 00:02:17 00:04:46 0.479
GB96_dither OY 48 00:02:17 00:04:52 0.470
GB95_dither OY 48 00:02:17 00:04:40 0.489
GB112_dither OY 48 00:02:17 00:05:29 0.417
GB94_dither OY 48 00:02:17 00:04:54 0.466
GB111_dither OY 48 00:02:17 00:05:23 0.424
GB93_dither OY 48 00:02:17 00:04:52 0.470
GB110_dither OY 48 00:02:17 00:05:00 0.456
GB109_dither OY 48 00:02:17 00:04:52 0.470
GB92_dither OY 48 00:02:17 00:04:41 0.488
GB91_dither OY 48 00:02:17 00:05:06 0.448
GB108_dither OY 48 00:02:17 00:05:53 0.388
GCsky 72 00:03:25 00:09:17 0.369
GB76_test OH 32 00:01:31 00:07:44 0.197
GB76_dither OH 192 00:09:09 00:19:25 0.471
GB77_dither OH 192 00:09:09 00:19:59 0.458
GB78_dither OH 192 00:09:09 00:19:24 0.472
GB94_dither OH 192 00:09:09 00:19:17 0.474
GB111_dither OH 192 00:09:09 00:19:37 0.466
GB110_dither OH 192 00:09:09 00:19:35 0.467
GB109_dither OH 96 00:04:34 00:09:33 0.479
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:33 0.448
GB74_dither OH 24 00:01:08 00:02:55 0.391
GB92_dither OH 48 00:02:17 00:05:09 0.444
GB93_dither OH 48 00:02:17 00:04:43 0.484
GB75_dither OH 96 00:04:34 00:10:21 0.442
GB112_dither OH 96 00:04:34 00:09:32 0.479
GB79_dither OH 96 00:04:34 00:10:48 0.423
GB60_dither OH 48 00:02:17 00:05:21 0.427
GB95_dither OH 48 00:02:17 00:05:35 0.410
GB113_dither OH 48 00:02:17 00:04:52 0.470
GB114_dither OH 24 00:01:08 00:02:30 0.456
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:33 0.448
GB80_dither OH 24 00:01:08 00:02:35 0.442










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 94:53:44 152:55:18 0.621

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 1915:18:57 996:05:10 919:13:46 257:23:03 220:36:54 220:36:54 220:36:54 171:31:04
Observed 1251:25:36
(65.34%)		 801:45:08
(80.49%)		 449:40:28
(48.92%)		 91:50:19
(35.68%)		 103:08:05
(46.75%)		 186:55:09
(84.73%)		 67:46:54
(30.72%)		 171:31:04
(N/A)
Remaining 663:53:20
(34.66%)		 194:20:02
(19.51%)		 469:33:18
(51.08%)		 165:32:44
(64.32%)		 117:28:49
(53.25%)		 33:41:44
(15.27%)		 152:50:00
(69.28%)		 00:00:00
(N/A)











Camera status (2025/08/13)



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