PRIME Observation Log 2025/07/23

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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: 2025/07/23
Local observer: Togo
Remote observer:
Weather: Clear, partly cloudy...
Comment:
Detector Temperature: 113.99989 +- 0.00164 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:18:14
Morning 07:08:03
Science Observation
(Sun altitude < -10°)
Start 18:40:44
End 06:45:34
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:40:44
End 04:01:08


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:32:55 12:04:49 0.790
GB Time 06:43:01 09:20:23 0.719
Non-GB Time 02:49:54 02:44:25 1.033


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 440 00:20:58 00:39:18 0.534
GB 3804 03:01:19 06:43:01 0.450
SAAO 423 00:20:09 00:42:28 0.475
OU 423 00:20:09 00:42:28 0.475
NASA 423 00:20:09 00:42:28 0.475
ABC 423 00:20:09 00:42:28 0.475


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 440 00:20:58 00:39:18 0.534
Bulge 3732 02:57:53 06:34:45 0.451
SKY 72 00:03:25 00:08:15 0.415
all_sky_grid 1692 01:20:39 02:49:54 0.475


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 440 00:20:58 00:39:18 0.534
GB74_test OY 28 00:01:20 00:04:19 0.308
GB74_dither OY 24 00:01:08 00:02:28 0.463
GB75_dither OY 24 00:01:08 00:02:24 0.475
GB76_dither OY 24 00:01:08 00:02:25 0.473
GB77_dither OY 24 00:01:08 00:02:27 0.465
GB78_dither OY 24 00:01:08 00:02:33 0.448
GB79_dither OY 24 00:01:08 00:02:27 0.465
GB80_dither OY 24 00:01:08 00:02:27 0.465
GB97_dither OY 24 00:01:08 00:02:30 0.456
GB96_dither OY 24 00:01:08 00:02:21 0.484
GB95_dither OY 24 00:01:08 00:02:19 0.493
GB94_dither OY 24 00:01:08 00:02:21 0.484
GB93_dither OY 24 00:01:08 00:02:19 0.493
GB92_dither OY 24 00:01:08 00:02:30 0.456
GB91_dither OY 24 00:01:08 00:02:33 0.448
GB108_dither OY 24 00:01:08 00:02:19 0.493
GB109_dither OY 24 00:01:08 00:02:19 0.493
GB110_dither OY 24 00:01:08 00:02:41 0.425
GB111_dither OY 24 00:01:08 00:02:16 0.503
GB112_dither OY 24 00:01:08 00:02:41 0.426
GB113_dither OY 24 00:01:08 00:02:30 0.455
GB114_dither OY 24 00:01:08 00:03:18 0.347
GCsky 72 00:03:25 00:08:15 0.415
GB76_test OH 24 00:01:08 00:03:46 0.304
GB76_dither OH 288 00:13:43 00:29:10 0.471
GB77_dither OH 288 00:13:43 00:28:30 0.482
GB78_dither OH 288 00:13:43 00:32:16 0.425
GB94_dither OH 264 00:12:35 00:26:21 0.477
GB111_dither OH 264 00:12:35 00:27:29 0.458
GB110_dither OH 264 00:12:35 00:26:44 0.470
GB109_dither OH 144 00:06:51 00:15:20 0.448
GB92_dither OH 72 00:03:25 00:07:31 0.456
GB93_dither OH 72 00:03:25 00:07:08 0.480
GB75_dither OH 144 00:06:51 00:14:31 0.473
GB112_dither OH 120 00:05:43 00:12:51 0.445
GB79_dither OH 144 00:06:51 00:15:41 0.437
GB60_dither OH 96 00:04:34 00:09:41 0.472
GB95_dither OH 48 00:02:17 00:04:38 0.493
GB113_dither OH 48 00:02:17 00:04:49 0.474
GB107_dither OH 24 00:01:08 00:02:19 0.493
GB106_dither OH 24 00:01:08 00:02:19 0.493
GB105_dither OH 24 00:01:08 00:02:21 0.484
GB88_dither OH 24 00:01:08 00:02:21 0.484
GB89_dither OH 24 00:01:08 00:02:25 0.471
GB90_dither OH 24 00:01:08 00:02:38 0.433
GB73_dither OH 24 00:01:08 00:02:23 0.477
GB72_dither OH 24 00:01:08 00:02:24 0.474
GB71_dither OH 24 00:01:08 00:03:23 0.337
GB60_test OH 32 00:01:31 00:09:55 0.154
GB80_dither OH 24 00:01:08 00:02:24 0.474
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:35 0.440
GB114_dither OH 24 00:01:08 00:02:30 0.456
GB115_dither OH 24 00:01:08 00:02:30 0.456
GB98_dither OH 24 00:01:08 00:02:19 0.493
GB81_dither OH 24 00:01:08 00:02:27 0.465
GB116_dither OH 24 00:01:08 00:02:19 0.493
GB99_dither OH 24 00:01:08 00:02:16 0.504
GB82_dither OH 24 00:01:08 00:02:24 0.474
GB83_dither OH 24 00:01:08 00:02:27 0.465
GB100_dither OH 24 00:01:08 00:02:28 0.462
GB117_dither OH 24 00:01:08 00:02:49 0.406
GB74_dither OH 24 00:01:08 00:02:24 0.474
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:24 0.474
field11694_test 8 00:00:22 00:03:14 0.117
field11694 40 00:01:54 00:04:06 0.465
field11695 40 00:01:54 00:04:06 0.463
field11696 40 00:01:54 00:05:25 0.352
field12254 44 00:02:05 00:05:11 0.404
field12255 40 00:01:54 00:03:52 0.491
field12256 40 00:01:54 00:03:50 0.497
field12257 40 00:01:54 00:03:52 0.491
field12258 40 00:01:54 00:03:52 0.491
field12259 40 00:01:54 00:03:55 0.485
field12260 40 00:01:54 00:03:52 0.491
field12261 40 00:01:54 00:03:55 0.485
field12262 40 00:01:54 00:03:55 0.486
field12263 40 00:01:54 00:03:52 0.491
field12264 40 00:01:54 00:03:52 0.491
field12265 40 00:01:54 00:03:47 0.503
field12266 40 00:01:54 00:03:52 0.491
field12267 40 00:01:54 00:03:55 0.485
field12268 40 00:01:54 00:03:55 0.485
field12269 40 00:01:54 00:03:50 0.497
field12270 40 00:01:54 00:03:55 0.485
field12271 40 00:01:54 00:03:52 0.491
field12272 40 00:01:54 00:03:52 0.491
field12273 40 00:01:54 00:04:01 0.474
field12274 40 00:01:54 00:03:52 0.491
field12275 40 00:01:54 00:03:52 0.491
field12276 40 00:01:54 00:03:52 0.491
field12277 40 00:01:54 00:03:55 0.485
field12278 40 00:01:54 00:03:50 0.497
field12279 40 00:01:54 00:03:47 0.503
field12280 40 00:01:54 00:03:50 0.497
field12281 40 00:01:54 00:03:47 0.503
field12282 40 00:01:54 00:03:52 0.491
field12283 40 00:01:54 00:04:08 0.460
field12284 40 00:01:54 00:03:50 0.497
field12285 40 00:01:54 00:03:52 0.491
field12286 40 00:01:54 00:03:50 0.497
field12287 40 00:01:54 00:03:50 0.497
field12288 40 00:01:54 00:03:50 0.497
field12289 40 00:01:54 00:03:52 0.491
field12290 40 00:01:54 00:03:52 0.491
field12291 40 00:01:54 00:03:55 0.485
field12292 40 00:01:54 00:04:05 0.465










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 160:58:55 281:28:02 0.572

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 1881:07:11 965:49:47 915:17:24 256:16:52 219:40:10 219:40:10 219:40:10 163:29:55
Observed 1092:47:35
(58.09%)		 682:05:41
(70.62%)		 410:41:54
(44.87%)		 70:34:54
(27.54%)		 97:46:09
(44.51%)		 179:55:51
(81.91%)		 62:24:58
(28.41%)		 163:29:55
(N/A)
Remaining 788:19:35
(41.91%)		 283:44:06
(29.38%)		 504:35:29
(55.13%)		 185:41:58
(72.46%)		 121:54:00
(55.49%)		 39:44:19
(18.09%)		 157:15:11
(71.59%)		 00:00:00
(N/A)











Camera status (2025/07/23)



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