PRIME Observation Log 2025/01/07

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Observation Log (Time is in UT)

Date: 2025/01/07
Local observer: Ryusei Hamada
Remote observer: #
Weather: clear
Comment:
Detector Temperature: 122.00000 +- 0.00339 K
ImageAcquisitionErrors occurred 2 times @
2025-01-07 22:02:13 SAT
2025-01-07 22:03:58 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:13:07
Morning 05:13:42
Science Observation
(Sun altitude < -10°)
Start 20:38:26
End 04:48:22
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start --:--:--
End --:--:--


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:26:01 08:09:56 0.788
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:26:01 08:09:56 0.788


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 592 00:28:13 01:17:40 0.363
NASA 4055 03:13:17 06:26:01 0.501


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 592 00:28:13 01:17:40 0.363
all_sky_grid 4055 03:13:17 06:26:01 0.501


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OJ 12 00:00:34 00:06:55 0.083
FLAT OJ 160 00:07:37 00:26:55 0.283
field7135_test 60 00:02:51 00:22:13 0.129
field7135 49 00:02:20 00:04:02 0.579
field7134 49 00:02:20 00:04:26 0.526
field7133 39 00:01:51 00:04:59 0.372
field6873 49 00:02:20 00:04:07 0.567
field6872 49 00:02:20 00:04:12 0.554
field6871 49 00:02:20 00:04:04 0.573
field6613 49 00:02:20 00:04:18 0.542
field6614 65 00:03:05 00:06:45 0.458
field6612 65 00:03:05 00:07:36 0.407
field6611 49 00:02:20 00:04:40 0.500
field6359 49 00:02:20 00:04:07 0.567
field6358 49 00:02:20 00:04:01 0.580
field6357 49 00:02:20 00:04:04 0.573
field6356 49 00:02:20 00:04:15 0.548
field6106 49 00:02:20 00:04:10 0.560
field6108 49 00:02:20 00:04:04 0.573
field6107 49 00:02:20 00:04:07 0.567
field6105 49 00:02:20 00:05:00 0.466
field4915 49 00:02:20 00:04:18 0.542
field5146 49 00:02:20 00:05:50 0.399
field6614_test 4 00:00:11 00:02:06 0.091
field5380 49 00:02:20 00:03:53 0.601
field5381 49 00:02:20 00:04:07 0.567
field6109 49 00:02:20 00:03:58 0.587
field6360 49 00:02:20 00:03:56 0.594
field6361 49 00:02:20 00:04:04 0.573
field6615 49 00:02:20 00:04:01 0.580
field6874 49 00:02:20 00:04:01 0.580
field7136 49 00:02:20 00:04:21 0.536
field5382 49 00:02:20 00:03:53 0.601
field5383 49 00:02:20 00:03:56 0.594
field5384 49 00:02:20 00:03:56 0.594
field5147 49 00:02:20 00:03:56 0.594
field5148 49 00:02:20 00:03:58 0.587
field5149 49 00:02:20 00:03:56 0.594
field4916 49 00:02:20 00:03:56 0.594
field4917 49 00:02:20 00:03:50 0.608
field4918 49 00:02:20 00:04:01 0.580
field4693 49 00:02:20 00:03:58 0.587
field4694 49 00:02:20 00:03:58 0.587
field4695 49 00:02:20 00:06:35 0.354
field5380_test 16 00:00:45 00:06:33 0.116
field4925 54 00:02:34 00:04:44 0.543
field4919 49 00:02:20 00:03:56 0.594
field4920 49 00:02:20 00:03:53 0.601
field4921 49 00:02:20 00:03:53 0.601
field4922 49 00:02:20 00:04:01 0.580
field5150 49 00:02:20 00:03:56 0.594
field5151 49 00:02:20 00:03:56 0.594
field5152 49 00:02:20 00:03:53 0.601
field5153 49 00:02:20 00:03:58 0.587
field5385 49 00:02:20 00:03:56 0.594
field5386 49 00:02:20 00:03:56 0.594
field5387 49 00:02:20 00:03:53 0.601
field5388 49 00:02:20 00:03:58 0.587
field5389 49 00:02:20 00:03:53 0.601
field5390 49 00:02:20 00:03:56 0.594
field5391 49 00:02:20 00:03:56 0.594
field5154 49 00:02:20 00:03:56 0.594
field5155 49 00:02:20 00:03:50 0.608
field5156 49 00:02:20 00:04:01 0.580
field4923 49 00:02:20 00:03:53 0.601
field4924 49 00:02:20 00:05:17 0.442
field4919_test 8 00:00:22 00:06:55 0.055
field4696 49 00:02:20 00:03:56 0.594
field4697 49 00:02:20 00:03:56 0.594
field4698 49 00:02:20 00:03:53 0.601
field4699 49 00:02:20 00:03:56 0.594
field4700 49 00:02:20 00:03:53 0.601
field4701 49 00:02:20 00:03:53 0.601
field4702 49 00:02:20 00:03:56 0.594
field4926 49 00:02:20 00:03:53 0.601
field4927 49 00:02:20 00:03:56 0.594
field4928 49 00:02:20 00:03:50 0.608
field4929 49 00:02:20 00:03:58 0.587
field5157 49 00:02:20 00:03:53 0.601
field5158 49 00:02:20 00:03:58 0.587
field5159 49 00:02:20 00:04:01 0.580
field5160 49 00:02:20 00:03:58 0.587
field5392 49 00:02:20 00:03:56 0.594
field5393 49 00:02:20 00:04:01 0.580
field5394 49 00:02:20 00:03:53 0.601
field5395 49 00:02:20 00:05:44 0.407
field4925_test 20 00:00:57 00:11:22 0.084
FLAT_test OY 16 00:00:45 00:06:30 0.117
FLAT OY 404 00:19:15 00:37:18 0.516










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 06:26:01 56:50:38 0.113

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 1866:54:40 945:33:18 921:21:22 257:58:47 221:07:31 221:07:31 221:07:31 01:17:40
Observed 06:26:01
(0.34%)		 00:00:00
(0.00%)		 06:26:01
(0.70%)		 00:00:00
(0.00%)		 00:00:00
(0.00%)		 06:26:01
(2.91%)		 00:00:00
(0.00%)		 01:17:40
(N/A)
Remaining 1860:28:39
(99.66%)		 945:33:18
(100.00%)		 914:55:20
(99.30%)		 257:58:47
(100.00%)		 221:07:31
(100.00%)		 214:41:29
(97.09%)		 221:07:31
(100.00%)		 00:00:00
(N/A)











Camera status (2025/01/07)