PRIME Observation Log 2025/08/08

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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: 2025/08/08
Local observer: Togo
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00003 +- 0.00126 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:27:55
Morning 06:56:20
Science Observation
(Sun altitude < -10°)
Start 18:49:54
End 06:34:24
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:49:54
End 02:58:13


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:27:45 11:44:30 0.380
GB Time 03:57:23 08:08:19 0.486
Non-GB Time 00:30:21 03:36:10 0.140


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 2352 01:52:06 03:57:23 0.472
SAAO 39 00:01:51 00:07:35 0.245
OU 39 00:01:51 00:07:35 0.245
NASA 39 00:01:51 00:07:35 0.245
ABC 39 00:01:51 00:07:35 0.245


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 2304 01:49:49 03:52:23 0.473
SKY 48 00:02:17 00:05:00 0.456
all_sky_grid 156 00:07:26 00:30:21 0.245


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_test OH 24 00:01:08 00:08:45 0.131
GB76_dither OH 240 00:11:26 00:23:28 0.487
GB77_dither OH 240 00:11:26 00:23:20 0.490
GB78_dither OH 240 00:11:26 00:23:22 0.489
GB94_dither OH 240 00:11:26 00:23:44 0.482
GB111_dither OH 216 00:10:17 00:21:17 0.484
GB110_dither OH 216 00:10:17 00:21:06 0.488
GB109_dither OH 120 00:05:43 00:11:41 0.489
GB92_dither OH 72 00:03:25 00:07:03 0.487
GB93_dither OH 72 00:03:25 00:07:16 0.472
GB75_dither OH 120 00:05:43 00:11:38 0.491
GB112_dither OH 96 00:04:34 00:09:22 0.488
GB79_dither OH 96 00:04:34 00:09:53 0.463
GB60_dither OH 48 00:02:17 00:04:49 0.474
GB95_dither OH 48 00:02:17 00:04:43 0.484
GB113_dither OH 48 00:02:17 00:04:38 0.493
GCsky 48 00:02:17 00:05:00 0.456
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
GB114_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:16 0.503
GB80_dither OH 24 00:01:08 00:02:16 0.503
field17 40 00:01:54 00:04:29 0.425
field27 24 00:01:08 00:03:06 0.367
field37 4 00:00:11 00:01:29 0.127
field69 8 00:00:22 00:08:33 0.045
field1_test 4 00:00:11 00:00:39 0.289
field2_test 4 00:00:11 00:00:39 0.289
field3_test 4 00:00:11 00:01:24 0.136
field4_test 4 00:00:11 00:00:36 0.311
field5_test 4 00:00:11 00:00:33 0.337
field6_test 4 00:00:11 00:00:36 0.311
field7_test 4 00:00:11 00:00:31 0.367
field8_test 4 00:00:11 00:00:31 0.367
field9_test 4 00:00:11 00:00:31 0.367
field10_test 4 00:00:11 00:00:31 0.367
field11_test 4 00:00:11 00:00:31 0.367
field12_test 4 00:00:11 00:01:29 0.127
field13_test 4 00:00:11 00:00:31 0.367
field14_test 4 00:00:11 00:00:31 0.368
field15_test 4 00:00:11 00:00:28 0.404
field16_test 4 00:00:11 00:00:28 0.404
field17_test 4 00:00:11 00:00:28 0.404
field18_test 4 00:00:11 00:00:28 0.404
field19_test 4 00:00:11 00:00:28 0.404
field20_test 4 00:00:11 00:00:41 0.276










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 53:58:54 94:35:00 0.571

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 1903:34:15 987:12:57 916:21:18 256:34:45 219:55:30 219:55:30 219:55:30 168:57:04
Observed 1210:30:45
(63.59%)		 773:05:55
(78.31%)		 437:24:49
(47.73%)		 83:50:30
(32.68%)		 101:42:48
(46.25%)		 185:29:53
(84.35%)		 66:21:37
(30.17%)		 168:57:04
(N/A)
Remaining 693:03:29
(36.41%)		 214:07:01
(21.69%)		 478:56:28
(52.27%)		 172:44:15
(67.32%)		 118:12:42
(53.75%)		 34:25:37
(15.65%)		 153:33:53
(69.83%)		 00:00:00
(N/A)











Camera status (2025/08/08)



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