PRIME Observation Log 2025/10/20

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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: 2025/10/20
Local observer: Kansuke
Remote observer:
Weather: Clear
Comment:
Detector Temperature: 116.00009 +- 0.00167 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:15:38
Morning 05:26:48
Science Observation
(Sun altitude < -10°)
Start 19:38:02
End 05:04:24
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:38:02
End 22:11:11


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:31:20 09:26:21 1.009
GB Time 02:24:27 02:33:09 0.943
Non-GB Time 07:06:53 06:53:12 1.033


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 320 00:15:15 00:37:38 0.405
GB 1172 00:55:51 02:24:27 0.387
SAAO 881 00:41:59 01:46:43 0.393
OU 881 00:41:59 01:46:43 0.393
NASA 881 00:41:59 01:46:43 0.393
ABC 881 00:41:59 01:46:43 0.393


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 320 00:15:15 00:37:38 0.405
Bulge 1148 00:54:43 02:21:25 0.387
SKY 24 00:01:08 00:03:01 0.377
all_sky_grid 3524 02:47:58 07:06:53 0.393


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 280 00:13:20 00:32:56 0.405
GB76_dither_test OH 12 00:00:34 00:02:52 0.199
GCsky 24 00:01:08 00:03:01 0.377
GB76_dither OH 96 00:04:34 00:11:25 0.400
GB77_dither OH 96 00:04:34 00:11:39 0.392
GB78_dither OH 96 00:04:34 00:11:31 0.397
GB94_dither OH 120 00:05:43 00:14:19 0.399
GB111_dither OH 136 00:06:28 00:17:59 0.360
GB110_dither OH 120 00:05:43 00:14:16 0.401
GB109_dither OH 48 00:02:17 00:05:47 0.396
GB108_dither OH 24 00:01:08 00:02:50 0.402
GB91_dither OH 24 00:01:08 00:02:53 0.396
GB74_dither OH 24 00:01:08 00:02:56 0.389
GB92_dither OH 24 00:01:08 00:02:53 0.396
GB93_dither OH 24 00:01:08 00:02:56 0.389
GB75_dither OH 48 00:02:17 00:05:44 0.399
GB112_dither OH 72 00:03:25 00:08:46 0.391
GB79_dither OH 24 00:01:08 00:02:53 0.396
GB60_dither OH 24 00:01:08 00:02:53 0.396
GB95_dither OH 24 00:01:08 00:02:56 0.389
GB113_dither OH 24 00:01:08 00:02:50 0.402
GB114_dither OH 24 00:01:08 00:02:53 0.396
GB97_dither OH 24 00:01:08 00:02:50 0.402
GB96_dither OH 24 00:01:08 00:02:53 0.396
GB80_dither OH 16 00:00:45 00:02:21 0.323
field7848_test 4 00:00:11 00:00:50 0.225
field7848 40 00:01:54 00:05:04 0.376
field10128 40 00:01:54 00:04:47 0.398
field10129 40 00:01:54 00:04:58 0.383
field13488 40 00:01:54 00:04:44 0.402
field13489 40 00:01:54 00:04:44 0.402
field13490 40 00:01:54 00:04:58 0.383
field7875 40 00:01:54 00:04:52 0.391
field7335 40 00:01:54 00:04:52 0.391
field6809 40 00:01:54 00:04:47 0.398
field6552 40 00:01:54 00:04:50 0.394
field6048 40 00:01:54 00:04:50 0.394
field5802 40 00:01:54 00:04:52 0.391
field4633 40 00:01:54 00:04:47 0.398
field4413 40 00:01:54 00:04:50 0.394
field4414 40 00:01:54 00:04:47 0.398
field4415 40 00:01:54 00:04:47 0.398
field4416 40 00:01:54 00:04:50 0.394
field3989 40 00:01:54 00:04:47 0.398
field3990 40 00:01:54 00:04:47 0.398
field3991 40 00:01:54 00:04:50 0.394
field3992 40 00:01:54 00:04:44 0.402
field3785 40 00:01:54 00:04:47 0.398
field3786 40 00:01:54 00:04:47 0.398
field3787 40 00:01:54 00:04:50 0.394
field4650 40 00:01:54 00:04:50 0.394
field3788 40 00:01:54 00:04:47 0.398
field3789 40 00:01:54 00:04:47 0.398
field3790 40 00:01:54 00:04:47 0.398
field3791 40 00:01:54 00:04:47 0.398
field3792 40 00:01:54 00:04:47 0.398
field3793 40 00:01:54 00:04:50 0.394
field4435 40 00:01:54 00:04:50 0.394
field3590 40 00:01:54 00:04:50 0.394
field3397 40 00:01:54 00:04:47 0.398
field3801 40 00:01:54 00:04:52 0.391
field3802 40 00:01:54 00:04:50 0.394
field3017 40 00:01:54 00:04:44 0.402
field3018 40 00:01:54 00:04:47 0.398
field3019 40 00:01:54 00:04:47 0.398
field3020 40 00:01:54 00:04:47 0.398
field3021 40 00:01:54 00:04:47 0.398
field3022 40 00:01:54 00:04:52 0.391
field3023 40 00:01:54 00:04:47 0.398
field3024 40 00:01:54 00:04:50 0.394
field3025 40 00:01:54 00:04:47 0.398
field3026 40 00:01:54 00:04:50 0.394
field3027 40 00:01:54 00:04:47 0.398
field3028 40 00:01:54 00:04:47 0.398
field3029 40 00:01:54 00:04:47 0.398
field3030 40 00:01:54 00:04:47 0.398
field3031 40 00:01:54 00:04:55 0.387
field4238 40 00:01:54 00:04:50 0.394
field3032 40 00:01:54 00:04:55 0.387
field3033 40 00:01:54 00:04:50 0.394
field4240 40 00:01:54 00:04:50 0.394
field3417 40 00:01:54 00:04:50 0.394
field3418 40 00:01:54 00:04:52 0.391
field3822 40 00:01:54 00:04:52 0.391
field3037 40 00:01:54 00:04:50 0.394
field4031 40 00:01:54 00:04:55 0.387
field3038 40 00:01:54 00:04:50 0.394
field3039 40 00:01:54 00:04:50 0.394
field3040 40 00:01:54 00:04:50 0.394
field3041 40 00:01:54 00:04:50 0.394
field2858 40 00:01:54 00:04:50 0.394
field2859 40 00:01:54 00:04:47 0.398
field2860 40 00:01:54 00:04:50 0.394
field2861 40 00:01:54 00:04:50 0.394
field2862 40 00:01:54 00:04:50 0.394
field2863 40 00:01:54 00:04:52 0.391
field3428 40 00:01:54 00:04:47 0.398
field3043 40 00:01:54 00:04:47 0.398
field3042 40 00:01:54 00:04:52 0.391
field3827 40 00:01:54 00:04:47 0.398
field3826 40 00:01:54 00:04:47 0.398
field3825 40 00:01:54 00:04:50 0.394
field4466 40 00:01:54 00:04:47 0.398
field4465 40 00:01:54 00:04:47 0.398
field4688 40 00:01:54 00:04:47 0.398
field4687 40 00:01:54 00:04:47 0.398
field4915 40 00:01:54 00:04:47 0.398
field4686 40 00:01:54 00:04:47 0.398
field5147 40 00:01:54 00:04:47 0.398
field4914 40 00:01:54 00:04:47 0.398
field5146 40 00:01:54 00:04:52 0.391
field6368 40 00:01:54 00:04:44 0.402
field6369 40 00:01:54 00:04:47 0.398
field6367 40 00:01:54 00:06:22 0.299
FLAT ZJ 40 00:01:54 00:04:41 0.406










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 230:19:15 357:22:01 0.644
Sep 190:24:38 318:36:32 0.598
Oct 110:27:23 195:26:16 0.565

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 1992:21:45 1046:41:26 945:40:19 264:47:17 226:57:40 226:57:40 226:57:40 209:50:26
Observed 1687:43:11
(84.71%)		 1027:22:53
(98.16%)		 660:20:18
(69.83%)		 156:26:55
(59.08%)		 147:19:42
(64.91%)		 244:35:07
(107.77%)		 111:58:31
(49.34%)		 209:50:26
(N/A)
Remaining 304:38:34
(15.29%)		 19:18:32
(1.84%)		 285:20:01
(30.17%)		 108:20:21
(40.92%)		 79:37:57
(35.09%)		 -18:22:34
(0.00%)		 114:59:08
(50.66%)		 00:00:00
(N/A)











Camera status (2025/10/20)



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