PRIME Observation Log 2025/10/18

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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: 2025/10/18
Local observer: Kansuke
Remote observer:
Weather: Clear
Comment:
Detector Temperature: 116.00021 +- 0.00234 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:13:59
Morning 05:29:08
Science Observation
(Sun altitude < -10°)
Start 19:36:17
End 05:06:51
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:36:17
End 22:19:03


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:21:26 09:30:33 0.984
GB Time 02:16:43 02:42:46 0.840
Non-GB Time 07:04:42 06:47:47 1.041


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 360 00:17:09 00:41:18 0.415
GB 1108 00:52:48 02:16:43 0.386
NASA 898 00:42:48 01:50:53 0.386
SAAO 854 00:40:42 01:44:36 0.389
OU 854 00:40:42 01:44:36 0.389
ABC 854 00:40:42 01:44:36 0.389


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 360 00:17:09 00:41:18 0.415
Bulge 1060 00:50:31 02:10:42 0.387
SKY 48 00:02:17 00:06:01 0.380
ToO 44 00:02:05 00:06:17 0.333
all_sky_grid 3416 02:42:49 06:58:24 0.389


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 360 00:17:09 00:41:18 0.415
GB60_test OY 4 00:00:11 00:01:38 0.116
GCsky 48 00:02:17 00:06:01 0.380
GB96_dither OY 48 00:02:17 00:05:47 0.396
GB97_dither OY 48 00:02:17 00:07:13 0.316
field54_test 4 00:00:11 00:00:39 0.288
field54 40 00:01:54 00:05:37 0.339
GB114_dither OY 48 00:02:17 00:05:47 0.396
GB113_dither OY 48 00:02:17 00:05:41 0.402
GB112_dither OY 48 00:02:17 00:05:47 0.396
GB111_dither OY 48 00:02:17 00:05:41 0.402
GB110_dither OY 48 00:02:17 00:05:41 0.402
GB109_dither OY 48 00:02:17 00:05:47 0.396
GB108_dither OY 48 00:02:17 00:05:44 0.399
GB91_dither OY 48 00:02:17 00:05:47 0.396
GB92_dither OY 48 00:02:17 00:05:44 0.399
GB93_dither OY 48 00:02:17 00:05:41 0.402
GB94_dither OY 48 00:02:17 00:05:41 0.402
GB95_dither OY 48 00:02:17 00:05:44 0.399
GB60_dither OY 48 00:02:17 00:05:44 0.399
GB80_dither OY 48 00:02:17 00:05:41 0.402
GB79_dither OY 48 00:02:17 00:05:41 0.402
GB78_dither OY 48 00:02:17 00:05:44 0.399
GB77_dither OY 48 00:02:17 00:05:47 0.396
GB76_dither OY 48 00:02:17 00:05:41 0.402
GB75_dither OY 48 00:02:17 00:05:41 0.402
GB74_dither OY 48 00:02:17 00:07:13 0.316
field5059_test 12 00:00:34 00:03:42 0.154
field5059 40 00:01:54 00:04:50 0.394
field6019 40 00:01:54 00:04:50 0.394
field7308 40 00:01:54 00:04:50 0.394
field8402 40 00:01:54 00:04:50 0.394
field10130 40 00:01:54 00:04:47 0.398
field11024 40 00:01:54 00:04:44 0.402
field11025 40 00:01:54 00:05:06 0.373
field15383 40 00:01:54 00:05:06 0.373
field7877 40 00:01:54 00:04:52 0.391
field7072 40 00:01:54 00:04:50 0.394
field6811 40 00:01:54 00:04:47 0.398
field6553 40 00:01:54 00:04:44 0.402
field6554 40 00:01:54 00:04:52 0.391
field5804 40 00:01:54 00:04:47 0.398
field5806 40 00:01:54 00:04:52 0.391
field4861 40 00:01:54 00:04:44 0.402
field4862 40 00:01:54 00:04:44 0.402
field4863 40 00:01:54 00:04:47 0.398
field4864 40 00:01:54 00:04:50 0.394
field4639 40 00:01:54 00:04:44 0.402
field4640 40 00:01:54 00:04:50 0.394
field4641 40 00:01:54 00:04:50 0.394
field4642 40 00:01:54 00:04:50 0.394
field4643 40 00:01:54 00:04:47 0.398
field4644 40 00:01:54 00:04:47 0.398
field4422 40 00:01:54 00:04:47 0.398
field4423 40 00:01:54 00:04:47 0.398
field4424 40 00:01:54 00:04:47 0.398
field4425 40 00:01:54 00:04:44 0.402
field4426 40 00:01:54 00:04:47 0.398
field4427 40 00:01:54 00:04:47 0.398
field4428 40 00:01:54 00:04:50 0.394
field4429 40 00:01:54 00:04:47 0.398
field4431 40 00:01:54 00:04:44 0.402
field4432 40 00:01:54 00:04:47 0.398
field4433 40 00:01:54 00:04:47 0.398
field4001 40 00:01:54 00:04:47 0.398
field4002 40 00:01:54 00:04:44 0.402
field4003 40 00:01:54 00:04:53 0.390
field4659 40 00:01:54 00:04:47 0.398
field4660 40 00:01:54 00:04:50 0.394
field4661 40 00:01:54 00:04:50 0.394
field4662 40 00:01:54 00:04:47 0.398
field4891 40 00:01:54 00:04:47 0.398
field4892 40 00:01:54 00:04:50 0.394
field3803 40 00:01:54 00:04:47 0.398
field3804 40 00:01:54 00:04:47 0.398
field3805 40 00:01:54 00:04:47 0.398
field3806 40 00:01:54 00:04:50 0.394
field3807 40 00:01:54 00:04:47 0.398
field3808 40 00:01:54 00:04:50 0.394
field3809 40 00:01:54 00:04:50 0.394
field3810 40 00:01:54 00:04:50 0.394
field3811 40 00:01:54 00:04:50 0.394
field3812 40 00:01:54 00:04:47 0.398
field3813 40 00:01:54 00:04:50 0.394
field3814 40 00:01:54 00:04:50 0.394
field3815 40 00:01:54 00:04:47 0.398
field4237 40 00:01:54 00:04:47 0.398
field3816 40 00:01:54 00:04:47 0.398
field3817 40 00:01:54 00:04:47 0.398
field3818 40 00:01:54 00:04:50 0.394
field3819 40 00:01:54 00:04:50 0.394
field3820 40 00:01:54 00:04:52 0.391
field3821 40 00:01:54 00:04:44 0.402
field4030 40 00:01:54 00:04:47 0.398
field3419 40 00:01:54 00:04:47 0.398
field3823 40 00:01:54 00:04:50 0.394
field3420 40 00:01:54 00:04:47 0.398
field3824 40 00:01:54 00:04:47 0.398
field3421 40 00:01:54 00:04:57 0.385
field3422_test 4 00:00:11 00:01:18 0.145
field3422 40 00:01:54 00:06:50 0.279
field4248 40 00:01:54 00:04:55 0.387
field3423 40 00:01:54 00:04:50 0.394
field3424 40 00:01:54 00:04:47 0.398
field3425 40 00:01:54 00:04:47 0.398
field3426 40 00:01:54 00:04:50 0.394
field3427 40 00:01:54 00:04:50 0.394
field3044 40 00:01:54 00:04:47 0.398
field3045 40 00:01:54 00:04:50 0.394
field3046 40 00:01:54 00:04:47 0.398
field3047 40 00:01:54 00:04:52 0.391
field2864 40 00:01:54 00:04:55 0.387
field2865 40 00:01:54 00:04:50 0.394
field2866 40 00:01:54 00:06:31 0.293










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 95:16:39 176:31:27 0.540

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 1986:38:26 1044:26:58 942:11:28 263:48:48 226:07:33 226:07:33 226:07:33 208:54:30
Observed 1672:32:27
(84.19%)		 1022:32:52
(97.90%)		 649:59:35
(68.99%)		 153:51:44
(58.32%)		 144:44:32
(64.01%)		 241:59:56
(107.02%)		 109:23:21
(48.38%)		 208:54:30
(N/A)
Remaining 314:05:59
(15.81%)		 21:54:06
(2.10%)		 292:11:52
(31.01%)		 109:57:03
(41.68%)		 81:23:00
(35.99%)		 -16:07:37
(0.00%)		 116:44:12
(51.62%)		 00:00:00
(N/A)











Camera status (2025/10/18)



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