PRIME Observation Log 2025/10/04

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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: 2025/10/04
Local observer: None
Remote observer: Asahi, Takuto
Weather: clear
Comment:
Detector Temperature: 116.00012 +- 0.00200 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:03:23
Morning 05:46:42
Science Observation
(Sun altitude < -10°)
Start 19:25:04
End 05:25:01
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:25:04
End 23:14:06


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:43:59 09:59:56 0.273
GB Time 02:43:59 03:49:01 0.716
Non-GB Time 00:00:00 06:10:55 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 2795 02:13:13 03:32:38 0.627
GB 1568 01:14:44 02:43:59 0.456


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 124 00:05:54 00:17:19 0.341
Bulge 1544 01:13:35 02:41:20 0.456
SKY 24 00:01:08 00:02:38 0.432
calibration 2671 02:07:19 03:15:18 0.652


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test ZO 4 00:00:11 00:04:54 0.039
FLAT ZO 120 00:05:43 00:12:25 0.460
GB76_test OH 8 00:00:22 00:02:27 0.155
GB76_dither OH 168 00:08:00 00:17:24 0.460
GB77_dither OH 144 00:06:51 00:15:06 0.454
GB78_dither OH 144 00:06:51 00:15:33 0.441
GB94_dither OH 144 00:06:51 00:14:49 0.463
GB111_dither OH 144 00:06:51 00:14:31 0.473
GB110_dither OH 144 00:06:51 00:14:25 0.476
GB109_dither OH 72 00:03:25 00:07:42 0.445
GB108_dither OH 24 00:01:08 00:02:18 0.497
GB91_dither OH 24 00:01:08 00:02:42 0.422
GB74_dither OH 24 00:01:08 00:02:19 0.493
GB92_dither OH 48 00:02:17 00:04:49 0.474
GB93_dither OH 48 00:02:17 00:04:49 0.474
GB75_dither OH 72 00:03:25 00:07:33 0.454
GB112_dither OH 72 00:03:25 00:07:00 0.490
GB79_dither OH 72 00:03:25 00:07:56 0.432
GB60_dither OH 48 00:02:17 00:05:25 0.421
GB95_dither OH 24 00:01:08 00:02:21 0.484
GB113_dither OH 24 00:01:08 00:02:27 0.465
GB114_dither OH 24 00:01:08 00:02:16 0.503
GB97_dither OH 24 00:01:08 00:02:18 0.496
GB96_dither OH 24 00:01:08 00:02:25 0.472
GB80_dither OH 24 00:01:08 00:02:35 0.440
GCsky 24 00:01:08 00:02:38 0.432
reset 80 00:03:48 00:09:09 0.416
superbias 960 00:45:45 01:29:36 0.511
Dark 525 00:25:01 00:28:11 0.888
LSS_H 80 00:03:48 00:12:34 0.303
NLC_H 421 00:20:04 00:20:50 0.963
LSS_J 80 00:03:48 00:09:05 0.419
NLC_J 525 00:25:01 00:25:51 0.968










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 17:42:35 40:12:15 0.440

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 1977:13:55 1036:44:46 940:29:08 263:20:09 225:42:59 225:42:59 225:42:59 200:45:09
Observed 1594:58:20
(80.67%)		 992:14:54
(95.71%)		 602:43:26
(64.09%)		 143:39:41
(54.55%)		 134:32:28
(59.61%)		 225:19:59
(99.83%)		 99:11:17
(43.94%)		 200:45:09
(N/A)
Remaining 382:15:34
(19.33%)		 44:29:51
(4.29%)		 337:45:42
(35.91%)		 119:40:28
(45.45%)		 91:10:31
(40.39%)		 00:23:00
(0.17%)		 126:31:42
(56.06%)		 00:00:00
(N/A)











Camera status (2025/10/04)



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