PRIME Observation Log 2025/01/21

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Raw Log (Time is in SA time)
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Observation Log (Time is in UT)

Date: 2025/01/21
Local observer: Ryusei Hamada
Remote observer: #
Weather: clear & windy -> high humidity
Comment:
Detector Temperature: 121.99998 +- 0.00209 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:09:35
Morning 05:27:08
Science Observation
(Sun altitude < -10°)
Start 20:34:01
End 05:02:42
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 04:31:17
End 05:02:42


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:31:41 08:28:40 0.534
GB Time 00:00:00 00:31:24 0.000
Non-GB Time 04:31:41 07:57:16 0.569


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 164 00:07:49 00:28:22 0.276
NASA 2512 01:59:44 04:01:42 0.495
OU 262 00:12:29 00:29:58 0.417


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 164 00:07:49 00:28:22 0.276
all_sky_grid 2512 01:59:44 04:01:42 0.495
ToO 262 00:12:29 00:29:58 0.417


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 4 00:00:11 00:07:34 0.025
FLAT OY 160 00:07:37 00:20:48 0.367
field3240_test 20 00:00:57 00:08:48 0.108
field3240 49 00:02:20 00:04:01 0.580
field3241 49 00:02:20 00:03:58 0.587
field3242 49 00:02:20 00:03:58 0.587
field3052 49 00:02:20 00:04:21 0.536
field3053 49 00:02:20 00:04:01 0.580
field2868 49 00:02:20 00:03:58 0.587
field2869 49 00:02:20 00:04:04 0.573
field2689 49 00:02:20 00:03:58 0.587
field2690 49 00:02:20 00:04:04 0.573
field2515 49 00:02:20 00:04:01 0.580
field2516 49 00:02:20 00:03:58 0.587
field2347 49 00:02:20 00:04:01 0.580
field2348 49 00:02:20 00:03:58 0.587
field2349 49 00:02:20 00:03:58 0.587
field2350 49 00:02:20 00:04:01 0.580
field2517 49 00:02:20 00:03:58 0.587
field2518 49 00:02:20 00:03:56 0.594
field2691 49 00:02:20 00:03:56 0.594
field2870 49 00:02:20 00:03:58 0.587
field2871 49 00:02:20 00:04:04 0.573
field3054 49 00:02:20 00:03:58 0.587
field3055 49 00:02:20 00:04:01 0.580
field3243 49 00:02:20 00:03:58 0.587
field3244 49 00:02:20 00:09:07 0.256
field3426_test 8 00:00:22 00:03:56 0.097
field2685 24 00:01:08 00:01:48 0.635
field2686 24 00:01:08 00:01:53 0.603
field2511 24 00:01:08 00:01:48 0.635
field2512 24 00:01:08 00:01:42 0.669
field2344 24 00:01:08 00:01:45 0.652
field2345 24 00:01:08 00:01:48 0.635
field2346 24 00:01:08 00:01:45 0.652
field2513 24 00:01:08 00:01:48 0.635
field2514 24 00:01:08 00:01:45 0.652
field2687 24 00:01:08 00:01:48 0.635
field2688 24 00:01:08 00:01:50 0.619
field2866 24 00:01:08 00:01:48 0.635
field2867 24 00:01:08 00:01:48 0.635
field3050 24 00:01:08 00:01:48 0.635
field3051 24 00:01:08 00:01:48 0.635
field3239 24 00:01:08 00:01:45 0.652
field4688_test 12 00:00:34 00:12:06 0.047
field4688 25 00:01:11 00:02:24 0.494
field4689 25 00:01:11 00:02:07 0.559
field4690 25 00:01:11 00:02:10 0.547
field4467 25 00:01:11 00:02:07 0.559
field4468 25 00:01:11 00:02:13 0.535
field4249 25 00:01:11 00:02:07 0.559
field4250 25 00:01:11 00:02:10 0.547
field4036 25 00:01:11 00:02:10 0.547
field4037 25 00:01:11 00:02:13 0.535
field3828 25 00:01:11 00:02:10 0.547
field3829 25 00:01:11 00:02:07 0.559
field3830 25 00:01:11 00:02:10 0.547
field3625 25 00:01:11 00:02:10 0.547
field3626 25 00:01:11 00:02:13 0.535
field3627 25 00:01:11 00:02:10 0.547
field3628 25 00:01:11 00:02:13 0.535
field3831 25 00:01:11 00:02:07 0.559
field3832 25 00:01:11 00:02:13 0.535
field4038 25 00:01:11 00:02:10 0.547
field4039 25 00:01:11 00:04:58 0.239
field13318_test 12 00:00:34 00:08:59 0.064
field13318 250 00:11:55 00:20:59 0.568
field4040_test 12 00:00:34 00:04:55 0.116
field4040 25 00:01:11 00:02:10 0.547
field4251 25 00:01:11 00:02:10 0.547
field4252 25 00:01:11 00:02:10 0.547
field4253 25 00:01:11 00:02:10 0.547
field4469 25 00:01:11 00:02:07 0.559
field4470 25 00:01:11 00:02:13 0.535
field4691 25 00:01:11 00:02:07 0.559
field4692 25 00:01:11 00:02:10 0.547
field4471 25 00:01:11 00:02:10 0.547
field4472 25 00:01:11 00:02:10 0.547
field4473 25 00:01:11 00:02:10 0.547
field4254 25 00:01:11 00:02:07 0.559
field4255 25 00:01:11 00:02:13 0.535
field4041 25 00:01:11 00:02:10 0.547
field4042 25 00:01:11 00:02:10 0.547
field3833 25 00:01:11 00:02:26 0.488










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 98:32:00 173:20:35 0.568

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 1900:45:41 944:35:14 956:10:26 267:43:43 229:28:54 229:28:54 229:28:54 12:54:58
Observed 98:32:00
(5.18%)		 00:00:00
(0.00%)		 98:32:00
(10.30%)		 02:15:08
(0.84%)		 22:40:47
(9.88%)		 71:20:55
(31.09%)		 02:15:08
(0.98%)		 12:54:58
(N/A)
Remaining 1802:13:40
(94.82%)		 944:35:14
(100.00%)		 857:38:25
(89.70%)		 265:28:34
(99.16%)		 206:48:07
(90.12%)		 158:07:58
(68.91%)		 227:13:45
(99.02%)		 00:00:00
(N/A)











Camera status (2025/01/21)