PRIME Observation Log 2025/08/11

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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: 2025/08/11
Local observer: Togo
Remote observer:
Weather: cloudy, clear
Comment:
Detector Temperature: 114.00026 +- 0.00618 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:29:45
Morning 06:53:33
Science Observation
(Sun altitude < -10°)
Start 18:51:38
End 06:31:43
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:51:38
End 02:46:26


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:46:55 11:40:04 1.010
GB Time 07:36:45 07:54:47 0.962
Non-GB Time 04:10:10 03:45:17 1.110


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.)
CALIB 480 00:22:52 00:43:00 0.532
GB 4568 03:37:44 07:36:45 0.477
SAAO 3570 02:50:10 03:30:41 0.808
OU 120 00:05:43 00:13:09 0.435
NASA 120 00:05:43 00:13:09 0.435
ABC 120 00:05:43 00:13:09 0.435


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 480 00:22:52 00:43:00 0.532
Bulge 4472 03:33:09 07:26:26 0.477
SKY 96 00:04:34 00:10:18 0.444
all_sky_grid 3930 03:07:19 04:10:10 0.749


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 480 00:22:52 00:43:00 0.532
GB76_test OH 28 00:01:20 00:05:13 0.256
GB76_dither OH 436 00:20:46 00:44:13 0.470
GB77_dither OH 432 00:20:35 00:42:24 0.486
GB78_dither OH 432 00:20:35 00:42:24 0.486
GB94_dither OH 432 00:20:35 00:42:24 0.486
GB111_dither OH 432 00:20:35 00:42:38 0.483
GB110_dither OH 432 00:20:35 00:42:35 0.484
GB109_dither OH 240 00:11:26 00:23:34 0.485
GB92_dither OH 120 00:05:43 00:11:49 0.484
GB93_dither OH 120 00:05:43 00:12:09 0.470
GB75_dither OH 216 00:10:17 00:21:12 0.486
GB112_dither OH 216 00:10:17 00:21:14 0.485
GB79_dither OH 216 00:10:17 00:23:01 0.447
GB60_dither OH 120 00:05:43 00:11:41 0.489
GB95_dither OH 96 00:04:34 00:09:25 0.486
GB113_dither OH 120 00:05:43 00:11:58 0.478
GCsky 96 00:04:34 00:10:18 0.444
GB71_dither OH 24 00:01:08 00:02:21 0.484
GB72_dither OH 24 00:01:08 00:02:19 0.493
GB73_dither OH 24 00:01:08 00:02:24 0.474
GB90_dither OH 24 00:01:08 00:02:21 0.484
GB89_dither OH 24 00:01:08 00:02:21 0.484
GB88_dither OH 24 00:01:08 00:02:24 0.474
GB105_dither OH 24 00:01:08 00:02:19 0.493
GB106_dither OH 24 00:01:08 00:02:21 0.484
GB107_dither OH 24 00:01:08 00:03:15 0.352
GB108_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:21 0.483
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:19 0.493
field1805_test 30 00:01:25 00:04:17 0.334
field1805 684 00:32:36 00:38:33 0.845
field1529 684 00:32:36 00:38:42 0.842
field5296 684 00:32:36 00:38:36 0.844
field5805 684 00:32:36 00:38:28 0.847
field5817 684 00:32:36 00:38:53 0.838
field3405 40 00:01:54 00:04:04 0.469
field3406 40 00:01:54 00:04:01 0.474
field3407 40 00:01:54 00:04:04 0.469
field3408 40 00:01:54 00:03:58 0.480
field3409 40 00:01:54 00:04:12 0.453
field3410 40 00:01:54 00:04:01 0.474
field3411 40 00:01:54 00:03:55 0.485
field3412 40 00:01:54 00:04:01 0.474
field3413 40 00:01:54 00:03:58 0.480
field3414 40 00:01:54 00:04:01 0.474
field3415 40 00:01:54 00:04:04 0.469
field3416 40 00:01:54 00:08:16 0.230










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 77:34:20 129:39:41 0.598

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 1909:37:21 990:37:59 918:59:21 257:19:01 220:33:26 220:33:26 220:33:26 170:21:43
Observed 1234:06:12
(64.63%)		 788:29:55
(79.60%)		 445:36:16
(48.49%)		 88:21:31
(34.34%)		 102:56:17
(46.67%)		 186:43:21
(84.66%)		 67:35:06
(30.64%)		 170:21:43
(N/A)
Remaining 675:31:08
(35.37%)		 202:08:03
(20.40%)		 473:23:05
(51.51%)		 168:57:30
(65.66%)		 117:37:09
(53.33%)		 33:50:04
(15.34%)		 152:58:20
(69.36%)		 00:00:00
(N/A)











Camera status (2025/08/11)



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