PRIME Observation Log 2025/10/17

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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: 2025/10/17
Local observer: Kansuke
Remote observer:
Weather: Cloudy
Comment:
Detector Temperature: 116.00083 +- 0.00276 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:13:11
Morning 05:30:19
Science Observation
(Sun altitude < -10°)
Start 19:35:25
End 05:08:05
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:35:25
End 22:22:59


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 00:25:58 09:32:39 0.045
GB Time 00:25:58 02:47:33 0.155
Non-GB Time 00:00:00 06:45:06 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 192 00:09:09 00:25:58 0.352


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 144 00:06:51 00:20:05 0.342
SKY 48 00:02:17 00:05:52 0.389


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB60_test OY 12 00:00:34 00:04:07 0.138
GCsky 48 00:02:17 00:05:52 0.389
GB108_dither OY 48 00:02:17 00:05:47 0.396
GB109_dither OY 48 00:02:17 00:05:41 0.402
GB110_dither OY 36 00:01:42 00:04:29 0.383










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 85:55:13 167:00:53 0.514

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 1982:02:17 1043:31:37 938:30:39 262:46:59 225:14:33 225:14:33 225:14:33 208:13:11
Observed 1663:11:01
(83.91%)		 1020:16:08
(97.77%)		 642:54:52
(68.50%)		 152:07:08
(57.89%)		 142:59:56
(63.49%)		 240:09:03
(106.62%)		 107:38:44
(47.79%)		 208:13:11
(N/A)
Remaining 318:51:16
(16.09%)		 23:15:29
(2.23%)		 295:35:46
(31.50%)		 110:39:50
(42.11%)		 82:14:37
(36.51%)		 -15:05:31
(0.00%)		 117:35:48
(52.21%)		 00:00:00
(N/A)











Camera status (2025/10/17)



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