PRIME Observation Log 2025/10/09

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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: 2025/10/09
Local observer: Kansuke
Remote observer:
Weather: Cloud
Comment:
Detector Temperature: 116.00004 +- 0.00086 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:06:59
Morning 05:40:13
Science Observation
(Sun altitude < -10°)
Start 19:28:52
End 05:18:21
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:28:52
End 22:54:26


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:16:08 09:49:29 0.333
GB Time 03:16:08 03:25:33 0.954
Non-GB Time 00:00:00 06:23:55 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 160 00:07:37 00:15:45 0.484
GB 1996 01:35:08 03:16:08 0.485


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 160 00:07:37 00:15:45 0.484
Bulge 1948 01:32:51 03:11:07 0.486
SKY 48 00:02:17 00:05:00 0.456


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 160 00:07:37 00:15:45 0.484
GB76_test OH 4 00:00:11 00:01:35 0.120
GCsky 48 00:02:17 00:05:00 0.456
GB76_dither OH 192 00:09:09 00:18:41 0.490
GB77_dither OH 192 00:09:09 00:18:41 0.490
GB78_dither OH 192 00:09:09 00:18:33 0.493
GB94_dither OH 192 00:09:09 00:18:36 0.492
GB111_dither OH 192 00:09:09 00:18:44 0.488
GB110_dither OH 192 00:09:09 00:18:30 0.494
GB109_dither OH 96 00:04:34 00:09:22 0.488
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
GB92_dither OH 48 00:02:17 00:04:43 0.484
GB93_dither OH 48 00:02:17 00:04:43 0.483
GB75_dither OH 96 00:04:34 00:09:25 0.486
GB112_dither OH 96 00:04:34 00:09:16 0.493
GB79_dither OH 96 00:04:34 00:09:49 0.466
GB60_dither OH 48 00:02:17 00:04:41 0.488
GB95_dither OH 48 00:02:17 00:04:43 0.484
GB113_dither OH 48 00:02:17 00:04:41 0.488
GB114_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:16 0.503










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 55:03:08 89:40:40 0.614

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 1989:50:18 1043:21:46 946:28:31 265:00:47 227:09:14 227:09:14 227:09:14 202:53:36
Observed 1632:18:55
(82.03%)		 1007:49:20
(96.59%)		 624:29:35
(65.98%)		 148:27:38
(56.02%)		 139:20:25
(61.34%)		 232:42:17
(102.44%)		 103:59:14
(45.78%)		 202:53:36
(N/A)
Remaining 357:31:22
(17.97%)		 35:32:26
(3.41%)		 321:58:55
(34.02%)		 116:33:08
(43.98%)		 87:48:49
(38.66%)		 -6:26:58
(0.00%)		 123:10:00
(54.22%)		 00:00:00
(N/A)











Camera status (2025/10/09)



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