PRIME Observation Log 2025/09/08

Return to index
Previous day Next day

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: 2025/09/08
Local observer: Asahi
Remote observer:
Weather: claer, humid. cloudy
Comment:
Detector Temperature: 113.99761 +- 0.01300 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:46:38
Morning 06:21:17
Science Observation
(Sun altitude < -10°)
Start 19:07:58
End 05:59:59
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:07:58
End 00:56:20


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:39:52 10:52:01 0.245
GB Time 02:39:52 05:48:21 0.459
Non-GB Time 00:00:00 05:03:39 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 00:14:20 0.532
GB 1432 01:08:15 02:39:52 0.427


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 160 00:07:37 00:14:20 0.532
Bulge 1408 01:07:06 02:37:08 0.427
SKY 24 00:01:08 00:02:44 0.418


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 160 00:07:37 00:14:20 0.532
GB76_test OH 16 00:00:45 00:08:14 0.093
GB76_dither OH 144 00:06:51 00:15:30 0.443
GB77_dither OH 144 00:06:51 00:15:24 0.445
GB78_dither OH 144 00:06:51 00:14:39 0.468
GB94_dither OH 144 00:06:51 00:16:24 0.418
GB110_dither OH 120 00:05:43 00:12:26 0.460
GB109_dither OH 72 00:03:25 00:07:45 0.442
GB108_dither OH 24 00:01:08 00:03:42 0.308
GB91_dither OH 24 00:01:08 00:02:30 0.456
GB74_dither OH 24 00:01:08 00:02:49 0.404
GB92_dither OH 48 00:02:17 00:04:58 0.460
GB93_dither OH 48 00:02:17 00:05:09 0.444
GB111_dither OH 120 00:05:43 00:12:51 0.445
GB75_dither OH 72 00:03:25 00:07:31 0.456
GB112_dither OH 48 00:02:17 00:04:41 0.488
GB79_dither OH 48 00:02:17 00:05:03 0.452
GB60_dither OH 24 00:01:08 00:02:33 0.448
GB95_dither OH 24 00:01:08 00:02:27 0.464
GB113_dither OH 24 00:01:08 00:02:30 0.456
GB114_dither OH 24 00:01:08 00:02:30 0.456
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:32 0.449
GB80_dither OH 24 00:01:08 00:02:27 0.464
GCsky 24 00:01:08 00:02:44 0.418










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 59:47:20 87:48:23 0.681

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 1964:24:16 1021:58:04 942:26:11 263:52:55 226:11:05 226:11:05 226:11:05 182:55:18
Observed 1446:38:29
(73.64%)		 915:20:58
(89.57%)		 531:17:30
(56.37%)		 124:47:27
(47.29%)		 118:15:03
(52.28%)		 205:21:06
(90.79%)		 82:53:52
(36.65%)		 182:55:18
(N/A)
Remaining 517:45:46
(26.36%)		 106:37:06
(10.43%)		 411:08:40
(43.63%)		 139:05:28
(52.71%)		 107:56:01
(47.72%)		 20:49:58
(9.21%)		 143:17:12
(63.35%)		 00:00:00
(N/A)











Camera status (2025/09/08)



Return to index
Previous day Next day