PRIME Observation Log 2025/06/24

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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: 2025/06/24
Local observer: Takuto
Remote observer: None
Weather: Cloudy
Comment:
Detector Temperature: 114.00004 +- 0.00116 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:04:37
Morning 07:14:03
Science Observation
(Sun altitude < -10°)
Start 18:27:45
End 06:50:55
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:27:45
End 05:55:09


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:04:29 12:23:09 0.813
GB Time 08:46:49 11:27:23 0.766
Non-GB Time 01:17:40 00:55:45 1.393


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 5024 03:59:28 08:46:49 0.455
CALIB 120 00:05:43 00:10:24 0.549
SAAO 191 00:09:06 00:19:25 0.469
OU 191 00:09:06 00:19:25 0.469
NASA 191 00:09:06 00:19:25 0.469
ABC 191 00:09:06 00:19:25 0.469


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 4880 03:52:36 08:20:34 0.465
SKY 144 00:06:51 00:26:14 0.261
all_sky_grid 764 00:36:25 01:17:40 0.469
TWILIGHT 120 00:05:43 00:10:24 0.549


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB80_dither_test OJ 28 00:01:20 00:09:39 0.138
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:38 0.493
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:32 0.503
GB93_dither OJ 48 00:02:17 00:04:32 0.503
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB95_dither OJ 48 00:02:17 00:04:38 0.493
GB96_dither OJ 48 00:02:17 00:04:32 0.503
GB97_dither OJ 48 00:02:17 00:04:52 0.470
GCsky 144 00:06:51 00:26:14 0.261
GB76_dither_test OH 40 00:01:54 00:13:07 0.145
GB76_dither OH 264 00:12:35 00:25:50 0.487
GB77_dither OH 264 00:12:35 00:25:50 0.487
GB78_dither OH 240 00:11:26 00:23:17 0.491
GB94_dither OH 264 00:12:35 00:25:39 0.491
GB111_dither OH 264 00:12:35 00:25:47 0.488
GB110_dither OH 264 00:12:35 00:25:44 0.489
GB109_dither OH 144 00:06:51 00:13:54 0.493
GB92_dither OH 72 00:03:25 00:07:05 0.484
GB93_dither OH 72 00:03:25 00:07:05 0.483
GB75_dither OH 120 00:05:43 00:11:41 0.489
GB112_dither OH 144 00:06:51 00:14:06 0.487
GB79_dither OH 144 00:06:51 00:17:25 0.394
GB60_dither OH 72 00:03:25 00:07:03 0.487
GB95_dither OH 72 00:03:25 00:07:16 0.472
GB113_dither OH 72 00:03:25 00:07:03 0.487
GB108_dither OH 24 00:01:08 00:02:27 0.465
GB91_dither OH 24 00:01:08 00:02:24 0.474
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB73_dither OH 24 00:01:08 00:02:27 0.465
GB90_dither OH 24 00:01:08 00:02:24 0.474
GB107_dither OH 24 00:01:08 00:02:16 0.503
GB106_dither OH 24 00:01:08 00:02:19 0.493
GB105_dither OH 24 00:01:08 00:02:24 0.474
GB88_dither OH 24 00:01:08 00:02:16 0.503
GB89_dither OH 24 00:01:08 00:02:24 0.474
GB72_dither OH 24 00:01:08 00:02:19 0.493
GB71_dither OH 24 00:01:08 00:03:29 0.328
GB83_dither OH 24 00:01:08 00:02:21 0.484
GB82_dither OH 24 00:01:08 00:02:21 0.484
GB81_dither OH 24 00:01:08 00:02:21 0.484
GB98_dither OH 24 00:01:08 00:02:24 0.474
GB99_dither OH 24 00:01:08 00:02:21 0.484
GB100_dither OH 24 00:01:08 00:02:21 0.483
GB117_dither OH 24 00:01:08 00:02:19 0.493
GB116_dither OH 24 00:01:08 00:02:19 0.493
GB115_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB108_dither_test OJ 12 00:00:34 00:04:35 0.125
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:38 0.493
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB112_dither OJ 48 00:02:17 00:04:35 0.498
GB113_dither OJ 48 00:02:17 00:04:38 0.493
GB114_dither OJ 48 00:02:17 00:04:38 0.493
GB115_dither OJ 48 00:02:17 00:04:35 0.498
GB116_dither OJ 48 00:02:17 00:04:35 0.498
GB117_dither OJ 48 00:02:17 00:04:43 0.484
GB100_dither OJ 48 00:02:17 00:04:38 0.493
GB83_dither OJ 48 00:02:17 00:04:38 0.493
GB82_dither OJ 48 00:02:17 00:04:43 0.484
GB81_dither OJ 48 00:02:17 00:04:41 0.488
GB99_dither OJ 48 00:02:17 00:04:38 0.493
GB98_dither OJ 48 00:02:17 00:04:43 0.484
GB73_dither OJ 48 00:02:17 00:04:35 0.498
GB72_dither OJ 48 00:02:17 00:04:46 0.479
GB71_dither OJ 48 00:02:17 00:04:38 0.493
GB88_dither OJ 48 00:02:17 00:04:35 0.498
GB89_dither OJ 48 00:02:17 00:04:41 0.488
GB107_dither OJ 48 00:02:17 00:05:53 0.388
field9270_test 4 00:00:11 00:01:24 0.136
field9270 40 00:01:54 00:03:50 0.497
field9271 40 00:01:54 00:03:50 0.497
field9272 40 00:01:54 00:03:50 0.497
field9273 40 00:01:54 00:03:55 0.485
field9274 40 00:01:54 00:03:50 0.497
field9275 40 00:01:54 00:03:50 0.497
field9276 40 00:01:54 00:03:50 0.497
field9277 40 00:01:54 00:03:52 0.491
field9278 40 00:01:54 00:03:55 0.485
field9279 40 00:01:54 00:03:52 0.491
field9280 40 00:01:54 00:03:47 0.503
field9281 40 00:01:54 00:03:55 0.485
field9282 40 00:01:54 00:03:50 0.497
field9283 40 00:01:54 00:03:47 0.503
field9284 40 00:01:54 00:03:50 0.497
field9285 40 00:01:54 00:03:50 0.497
field9286 40 00:01:54 00:03:55 0.486
field9287 40 00:01:54 00:03:52 0.491
field9288 40 00:01:54 00:06:49 0.279
FLAT OH 120 00:05:43 00:10:24 0.549










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 176:09:48 296:35:52 0.594

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 1864:09:37 956:04:25 908:05:12 254:15:51 217:56:26 217:56:26 217:56:26 153:19:46
Observed 897:58:50
(48.17%)		 521:55:59
(54.59%)		 376:02:51
(41.41%)		 61:55:08
(24.35%)		 89:06:24
(40.89%)		 171:16:05
(78.58%)		 53:45:13
(24.66%)		 153:19:46
(N/A)
Remaining 966:10:46
(51.83%)		 434:08:25
(45.41%)		 532:02:20
(58.59%)		 192:20:42
(75.65%)		 128:50:02
(59.11%)		 46:40:21
(21.42%)		 164:11:13
(75.34%)		 00:00:00
(N/A)











Camera status (2025/06/24)



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