PRIME Observation Log 2025/01/08

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Observation Log (Time is in UT)

Date: 2025/01/08
Local observer: Ryusei Hamada
Remote observer: #
Weather: clear
Comment:
Detector Temperature: 121.99997 +- 0.00107 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:13:04
Morning 05:14:35
Science Observation
(Sun altitude < -10°)
Start 20:38:20
End 04:49:19
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 06:37:53 08:10:59 0.810
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:37:53 08:10:59 0.810


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
NASA 4036 03:12:22 06:37:53 0.484
CALIB 136 00:06:28 00:24:40 0.263


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 4036 03:12:22 06:37:53 0.484
TWILIGHT 136 00:06:28 00:24:40 0.263


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field3426_test 40 00:01:54 00:18:35 0.103
field3426 49 00:02:20 00:04:01 0.580
field3427 49 00:02:20 00:03:58 0.587
field3232 49 00:02:20 00:04:01 0.580
field3233 49 00:02:20 00:04:01 0.580
field3043 49 00:02:20 00:04:01 0.580
field3044 49 00:02:20 00:03:58 0.587
field2859 49 00:02:20 00:04:04 0.573
field2860 49 00:02:20 00:03:56 0.594
field2861 49 00:02:20 00:04:01 0.580
field2681 49 00:02:20 00:03:58 0.587
field2682 49 00:02:20 00:04:01 0.580
field2508 49 00:02:20 00:03:58 0.587
field2509 49 00:02:20 00:03:58 0.587
field2340 49 00:02:20 00:03:58 0.587
field2341 49 00:02:20 00:03:56 0.594
field2177 49 00:02:20 00:04:01 0.580
field2342 49 00:02:20 00:03:58 0.587
field2343 49 00:02:20 00:04:01 0.580
field2510 49 00:02:20 00:04:01 0.580
field2683 49 00:02:20 00:05:48 0.402
field2684 49 00:02:20 00:03:58 0.587
field2862 49 00:02:20 00:04:01 0.580
field2863 49 00:02:20 00:04:07 0.567
field3045 49 00:02:20 00:03:56 0.594
field3046 49 00:02:20 00:03:58 0.587
field3234 49 00:02:20 00:03:56 0.594
field3235 49 00:02:20 00:03:58 0.587
field3428 49 00:02:20 00:04:01 0.580
field3429 49 00:02:20 00:03:58 0.587
field3430 49 00:02:20 00:03:58 0.587
field3431 49 00:02:20 00:03:56 0.594
field3432 49 00:02:20 00:03:56 0.594
field3236 49 00:02:20 00:04:01 0.580
field3237 49 00:02:20 00:03:53 0.601
field3238 49 00:02:20 00:03:58 0.587
field3047 49 00:02:20 00:03:58 0.587
field3048 49 00:02:20 00:03:56 0.594
field3049 49 00:02:20 00:03:53 0.601
field2864 49 00:02:20 00:03:56 0.594
field2865 49 00:02:20 00:05:08 0.454
field2684_test 28 00:01:20 00:13:26 0.099
field2685 49 00:02:20 00:03:53 0.601
field2686 49 00:02:20 00:03:56 0.594
field2511 49 00:02:20 00:03:53 0.601
field2512 49 00:02:20 00:03:58 0.587
field2344 49 00:02:20 00:03:58 0.587
field2345 49 00:02:20 00:03:56 0.594
field2346 49 00:02:20 00:03:58 0.587
field2513 49 00:02:20 00:03:53 0.601
field2514 49 00:02:20 00:04:01 0.580
field2687 49 00:02:20 00:03:56 0.594
field2688 49 00:02:20 00:03:58 0.587
field2866 49 00:02:20 00:03:56 0.594
field2867 49 00:02:20 00:04:01 0.580
field3050 49 00:02:20 00:03:58 0.587
field3051 49 00:02:20 00:04:01 0.580
field3239 49 00:02:20 00:03:53 0.601
field3240 49 00:02:20 00:03:58 0.587
field3241 49 00:02:20 00:04:01 0.580
field3242 49 00:02:20 00:03:58 0.587
field3052 49 00:02:20 00:06:19 0.370
field2685_test 16 00:00:45 00:06:11 0.123
field3053 49 00:02:20 00:03:58 0.587
field2868 49 00:02:20 00:03:56 0.594
field2869 49 00:02:20 00:04:01 0.580
field2689 49 00:02:20 00:03:53 0.600
field2690 49 00:02:20 00:04:01 0.580
field2515 49 00:02:20 00:03:53 0.601
field2516 49 00:02:20 00:03:58 0.587
field2347 49 00:02:20 00:03:56 0.594
field2348 49 00:02:20 00:03:53 0.601
field2349 49 00:02:20 00:03:58 0.587
field2350 49 00:02:20 00:04:04 0.573
field2517 49 00:02:20 00:03:56 0.594
field2518 49 00:02:20 00:03:58 0.587
field2691 49 00:02:20 00:03:58 0.587
field2870 49 00:02:20 00:03:56 0.594
field2871 49 00:02:20 00:03:56 0.594
field3054 49 00:02:20 00:03:56 0.593
field3055 49 00:02:20 00:03:58 0.587
field3243 49 00:02:20 00:03:56 0.594
field3244 49 00:02:20 00:07:00 0.334
field3053_test 32 00:01:31 00:33:20 0.046
FLAT_test OH 16 00:00:45 00:14:13 0.054
FLAT OH 120 00:05:43 00:10:27 0.547










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 13:03:55 65:01:37 0.201

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 1869:27:04 945:33:18 923:53:45 258:41:27 221:44:06 221:44:06 221:44:06 01:42:21
Observed 13:03:55
(0.70%)		 00:00:00
(0.00%)		 13:03:55
(1.41%)		 00:00:00
(0.00%)		 00:00:00
(0.00%)		 13:03:55
(5.89%)		 00:00:00
(0.00%)		 01:42:21
(N/A)
Remaining 1856:23:09
(99.30%)		 945:33:18
(100.00%)		 910:49:50
(98.59%)		 258:41:27
(100.00%)		 221:44:06
(100.00%)		 208:40:10
(94.11%)		 221:44:06
(100.00%)		 00:00:00
(N/A)











Camera status (2025/01/08)