PRIME Observation Log 2025/07/19

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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: 2025/07/19
Local observer: Togo
Remote observer:
Weather: Clear -> cloudy
Comment:
Detector Temperature: 113.99990 +- 0.01174 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:15:54
Morning 07:10:04
Science Observation
(Sun altitude < -10°)
Start 18:38:33
End 06:47:27
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:38:33
End 04:16:52


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:08:20 12:08:54 0.752
GB Time 09:08:20 09:38:18 0.948
Non-GB Time 00:00:00 02:30:36 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 240 00:11:26 00:25:28 0.449
GB 5464 04:20:27 09:08:20 0.475


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 240 00:11:26 00:25:28 0.449
Bulge 5344 04:14:43 08:52:24 0.478
SKY 120 00:05:43 00:15:56 0.359


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 240 00:11:26 00:25:28 0.449
GB74_test OJ 12 00:00:34 00:05:17 0.108
GB74_dither OJ 24 00:01:08 00:02:16 0.503
GB75_dither OJ 24 00:01:08 00:02:16 0.503
GB76_dither OJ 24 00:01:08 00:02:19 0.493
GB77_dither OJ 24 00:01:08 00:02:19 0.493
GB78_dither OJ 24 00:01:08 00:02:19 0.493
GB79_dither OJ 24 00:01:08 00:02:16 0.503
GB80_dither OJ 24 00:01:08 00:02:21 0.484
GB97_dither OJ 24 00:01:08 00:02:19 0.493
GB96_dither OJ 24 00:01:08 00:02:19 0.493
GB95_dither OJ 24 00:01:08 00:02:21 0.484
GB94_dither OJ 24 00:01:08 00:02:19 0.493
GB93_dither OJ 24 00:01:08 00:02:19 0.493
GB92_dither OJ 24 00:01:08 00:02:19 0.493
GB91_dither OJ 24 00:01:08 00:02:19 0.493
GB108_dither OJ 24 00:01:08 00:02:21 0.484
GB109_dither OJ 24 00:01:08 00:02:19 0.493
GB110_dither OJ 24 00:01:08 00:02:19 0.493
GB111_dither OJ 24 00:01:08 00:02:21 0.484
GB112_dither OJ 24 00:01:08 00:02:19 0.493
GB113_dither OJ 24 00:01:08 00:02:19 0.493
GB114_dither OJ 24 00:01:08 00:03:34 0.320
GB75_test OH 4 00:00:11 00:00:22 0.503
GB75_dither OH 264 00:12:35 00:26:00 0.484
GB74_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB80_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 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:35 0.440
GCsky 120 00:05:43 00:15:56 0.359
GB76_dither OH 456 00:21:44 00:44:29 0.489
GB77_dither OH 456 00:21:44 00:44:40 0.487
GB78_dither OH 456 00:21:44 00:44:23 0.490
GB94_dither OH 456 00:21:44 00:44:34 0.488
GB111_dither OH 456 00:21:44 00:44:40 0.487
GB110_dither OH 456 00:21:44 00:44:43 0.486
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 00:11:58 0.478
GB112_dither OH 216 00:10:17 00:21:20 0.482
GB79_dither OH 216 00:10:17 00:23:46 0.433
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 96 00:04:34 00:09:27 0.484
GB71_dither OH 24 00:01:08 00:02:19 0.493
GB72_dither OH 24 00:01:08 00:02:21 0.484
GB73_dither OH 24 00:01:08 00:02:33 0.448
GB90_dither OH 24 00:01:08 00:02:21 0.483
GB89_dither OH 24 00:01:08 00:02:19 0.493
GB88_dither OH 24 00:01:08 00:02:24 0.474
GB105_dither OH 24 00:01:08 00:02:24 0.474
GB106_dither OH 24 00:01:08 00:02:24 0.474
GB107_dither OH 24 00:01:08 00:03:20 0.342
GB83_dither OH 24 00:01:08 00:02:19 0.493
GB100_dither OH 24 00:01:08 00:02:16 0.503
GB117_dither OH 24 00:01:08 00:02:19 0.493
GB82_dither OH 24 00:01:08 00:02:19 0.493
GB99_dither OH 24 00:01:08 00:02:19 0.493
GB116_dither OH 24 00:01:08 00:02:21 0.483
GB81_dither OH 24 00:01:08 00:02:21 0.484
GB98_dither OH 24 00:01:08 00:02:19 0.493
GB115_dither OH 24 00:01:08 00:02:27 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 130:13:24 233:02:28 0.559

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 1874:34:27 962:32:39 912:01:48 255:22:06 218:53:14 218:53:14 218:53:14 160:29:34
Observed 1062:02:04
(56.65%)		 659:54:18
(68.56%)		 402:07:46
(44.09%)		 68:26:22
(26.80%)		 95:37:37
(43.69%)		 177:47:19
(81.22%)		 60:16:26
(27.54%)		 160:29:34
(N/A)
Remaining 812:32:22
(43.35%)		 302:38:20
(31.44%)		 509:54:02
(55.91%)		 186:55:44
(73.20%)		 123:15:36
(56.31%)		 41:05:54
(18.78%)		 158:36:47
(72.46%)		 00:00:00
(N/A)











Camera status (2025/07/19)



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