PRIME Observation Log 2025/07/11

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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: 2025/07/11
Local observer: Takuto
Remote observer: None
Weather: Humidity
Comment:
Detector Temperature: 114.00012 +- 0.00189 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:11:34
Morning 07:12:59
Science Observation
(Sun altitude < -10°)
Start 18:34:27
End 06:50:08
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:34:27
End 04:48:19


Observed Fraction
Actually Observed Time
(hh:mm:ss)
Expected Observation Time
(hh:mm:ss)
Observed Fraction
(observed/expected)
Total Time 00:38:01 12:15:41 0.052
GB Time 00:35:24 10:13:52 0.058
Non-GB Time 00:02:36 02:01:49 0.021


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 160 00:07:37 00:18:11 0.419
GB 164 00:07:49 00:35:24 0.221
SAAO 3 00:00:08 00:00:39 0.219
OU 3 00:00:08 00:00:39 0.219
NASA 3 00:00:08 00:00:39 0.219
ABC 3 00:00:08 00:00:39 0.219


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss)
Total Observation
(hh:mm:ss)
Efficiency
(exp./obs.)
all_sky_grid 12 00:00:34 00:02:36 0.219
TWILIGHT 160 00:07:37 00:18:11 0.419
Bulge 164 00:07:49 00:35:24 0.221


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss)
Total Observation
(hh:mm:ss)
Efficiency
(exp./obs.)
test3 8 00:00:22 00:01:55 0.198
test4 4 00:00:11 00:00:41 0.276
FLAT OH 160 00:07:37 00:18:11 0.419
GB98_dither_test OJ 48 00:02:17 00:24:04 0.095
GB98_dither OJ 48 00:02:17 00:04:32 0.503
GB99_dither OJ 48 00:02:17 00:04:35 0.498
GB100_dither OJ 20 00:00:57 00:02:12 0.432










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 49:50:59 135:26:10 0.368

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 1843:00:11 936:38:25 906:21:46 253:46:53 217:31:37 217:31:37 217:31:37 157:25:25
Observed 981:39:39
(53.26%)
594:24:26
(63.46%)
387:15:12
(42.73%)
64:43:13
(25.50%)
91:54:29
(42.25%)
174:04:10
(80.02%)
56:33:18
(26.00%)
157:25:25
(N/A)
Remaining 861:20:31
(46.74%)
342:13:58
(36.54%)
519:06:33
(57.27%)
189:03:39
(74.50%)
125:37:07
(57.75%)
43:27:26
(19.98%)
160:58:19
(74.00%)
00:00:00
(N/A)











Camera status (2025/07/11)



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