PRIME Observation Log 2025/10/12

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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: 2025/10/12
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 116.00016 +- 0.00150 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:09:15
Morning 05:36:26
Science Observation
(Sun altitude < -10°)
Start 19:31:15
End 05:14:26
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:31:15
End 22:42:38


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:31:10 09:43:10 0.156
GB Time 01:31:10 03:11:23 0.476
Non-GB Time 00:00:00 06:31:47 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 480 00:22:52 00:42:50 0.534
GB 908 00:43:16 01:31:10 0.475


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
calibration 480 00:22:52 00:42:50 0.534
Bulge 884 00:42:08 01:28:40 0.475
SKY 24 00:01:08 00:02:30 0.456


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
superbias 480 00:22:52 00:42:50 0.534
GB76_test OH 16 00:00:45 00:04:38 0.164
GCsky 24 00:01:08 00:02:30 0.456
GB76_dither OH 96 00:04:34 00:09:13 0.496
GB77_dither OH 96 00:04:34 00:09:11 0.498
GB78_dither OH 96 00:04:34 00:09:08 0.501
GB94_dither OH 96 00:04:34 00:09:13 0.496
GB111_dither OH 76 00:03:37 00:07:41 0.471
GB110_dither OH 96 00:04:34 00:09:13 0.496
GB109_dither OH 48 00:02:17 00:04:38 0.493
GB108_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:16 0.503
GB74_dither OH 24 00:01:08 00:02:16 0.503
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:21 0.484
GB75_dither OH 48 00:02:17 00:04:38 0.493
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:19 0.493
GB60_dither OH 24 00:01:08 00:02:35 0.443
GB95_dither OH 24 00:01:08 00:02:19 0.493










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 60:32:00 118:56:31 0.509

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 1980:41:14 1043:04:12 937:37:02 262:31:58 225:01:41 225:01:41 225:01:41 206:16:17
Observed 1637:47:48
(82.69%)		 1012:25:56
(97.06%)		 625:21:51
(66.70%)		 148:40:42
(56.63%)		 139:33:29
(62.02%)		 232:55:21
(103.51%)		 104:12:18
(46.31%)		 206:16:17
(N/A)
Remaining 342:53:26
(17.31%)		 30:38:15
(2.94%)		 312:15:10
(33.30%)		 113:51:16
(43.37%)		 85:28:11
(37.98%)		 -8:06:21
(0.00%)		 120:49:23
(53.69%)		 00:00:00
(N/A)











Camera status (2025/10/12)



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