PRIME Observation Log 2025/07/24

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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: 2025/07/24
Local observer: Togo
Remote observer:
Weather: Clear-> high humidity
Comment:
Detector Temperature: 114.00015 +- 0.00121 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:18:49
Morning 07:07:29
Science Observation
(Sun altitude < -10°)
Start 18:41:18
End 06:45:02
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:41:18
End 03:57:12


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:00:19 12:03:43 0.083
GB Time 01:00:19 09:15:54 0.109
Non-GB Time 00:00:00 02:47:49 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 200 00:09:32 00:21:10 0.450
GB 612 00:29:10 01:00:19 0.484


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 200 00:09:32 00:21:10 0.450
Bulge 612 00:29:10 01:00:19 0.484


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 200 00:09:32 00:21:10 0.450
GB76_test OH 12 00:00:34 00:02:07 0.270
GB76_dither OH 72 00:03:25 00:06:57 0.493
GB77_dither OH 72 00:03:25 00:06:57 0.493
GB78_dither OH 72 00:03:25 00:06:57 0.493
GB94_dither OH 72 00:03:25 00:06:54 0.497
GB111_dither OH 72 00:03:25 00:07:13 0.475
GB110_dither OH 48 00:02:17 00:04:35 0.498
GB109_dither OH 24 00:01:08 00:02:19 0.493
GB92_dither OH 24 00:01:08 00:02:21 0.484
GB93_dither OH 24 00:01:08 00:02:19 0.493
GB75_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB60_dither OH 24 00:01:08 00:02:16 0.503
GB113_dither OH 24 00:01:08 00:02:19 0.493










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 161:59:14 293:31:46 0.552

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 1876:05:38 962:12:09 913:53:28 255:53:22 219:20:02 219:20:02 219:20:02 163:51:06
Observed 1093:47:54
(58.30%)		 683:06:00
(70.99%)		 410:41:53
(44.94%)		 70:34:54
(27.58%)		 97:46:09
(44.58%)		 179:55:51
(82.04%)		 62:24:58
(28.46%)		 163:51:06
(N/A)
Remaining 782:17:43
(41.70%)		 279:06:09
(29.01%)		 503:11:34
(55.06%)		 185:18:28
(72.42%)		 121:33:52
(55.42%)		 39:24:10
(17.96%)		 156:55:03
(71.54%)		 00:00:00
(N/A)











Camera status (2025/07/24)



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