PRIME Observation Log 2025/05/26

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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: 2025/05/26
Local observer: Ryusei
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00002 +- 0.00093 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:05:09
Morning 07:02:50
Science Observation
(Sun altitude < -10°)
Start 18:27:52
End 06:40:04
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:19:53
End 06:40:04


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:07:10 12:12:12 0.583
GB Time 05:54:27 10:20:11 0.572
Non-GB Time 01:12:43 01:52:00 0.649


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.)
SAAO 402 00:19:09 00:47:54 0.400
GB 3260 02:35:23 05:54:27 0.438
OU 58 00:02:45 00:08:16 0.334
NASA 58 00:02:45 00:08:16 0.334
ABC 58 00:02:45 00:08:16 0.334


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
ToO 344 00:16:23 00:39:38 0.414
all_sky_grid 232 00:11:03 00:33:05 0.334
Bulge 3164 02:30:49 05:40:30 0.443
SKY 96 00:04:34 00:13:56 0.328


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field1351_test 44 00:02:05 00:11:32 0.182
field1351 300 00:14:18 00:28:05 0.509
field2071_test 32 00:01:31 00:09:00 0.169
field2071 40 00:01:54 00:03:50 0.497
field2072 40 00:01:54 00:03:50 0.497
field2073 40 00:01:54 00:04:01 0.474
field2074 40 00:01:54 00:03:52 0.491
field2075 40 00:01:54 00:08:30 0.224
GB63_test OH 8 00:00:22 00:05:31 0.069
GB63_test OJ 56 00:02:40 00:20:31 0.130
GB63_dither OJ 24 00:01:08 00:02:21 0.484
GB62_dither OJ 24 00:01:08 00:02:19 0.493
GB61_dither OJ 24 00:01:08 00:02:19 0.493
GB60_dither OJ 24 00:01:08 00:02:21 0.484
GB59_dither OJ 24 00:01:08 00:02:19 0.493
GB58_dither OJ 24 00:01:08 00:02:19 0.493
GB57_dither OJ 24 00:01:08 00:02:16 0.503
GB74_dither OJ 24 00:01:08 00:02:19 0.493
GB75_dither OJ 24 00:01:08 00:02:19 0.493
GB76_dither OJ 24 00:01:08 00:02:19 0.493
GB77_dither OJ 24 00:01:08 00:02:21 0.484
GB78_dither OJ 24 00:01:08 00:02:19 0.493
GB79_dither OJ 24 00:01:08 00:02:19 0.493
GB80_dither OJ 24 00:01:08 00:02:19 0.493
GB97_dither OJ 24 00:01:08 00:02:19 0.493
GB96_dither OJ 24 00:01:08 00:02:19 0.493
GB95_dither OJ 24 00:01:08 00:03:46 0.304
GB94_test OH 4 00:00:11 00:04:49 0.040
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB93_dither OJ 48 00:02:17 00:04:38 0.493
GB92_dither OJ 48 00:02:17 00:04:32 0.503
GB91_dither OJ 48 00:02:17 00:04:35 0.498
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:35 0.498
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:35 0.498
GB114_dither OJ 48 00:02:17 00:04:35 0.498
GB131_dither OJ 48 00:02:17 00:04:35 0.498
GB130_dither OJ 48 00:02:17 00:04:35 0.498
GB129_dither OJ 48 00:02:17 00:04:32 0.503
GB128_dither OJ 48 00:02:17 00:04:38 0.493
GB127_dither OJ 48 00:02:17 00:04:38 0.493
GB126_dither OJ 48 00:02:17 00:04:43 0.484
GB125_dither OJ 48 00:02:17 00:06:30 0.352
GCsky 96 00:04:34 00:13:56 0.328
GB63_dither OH 72 00:03:25 00:07:17 0.471
GB62_dither OH 72 00:03:25 00:07:25 0.462
GB61_dither OH 72 00:03:25 00:07:03 0.487
GB60_dither OH 72 00:03:25 00:07:11 0.477
GB59_dither OH 72 00:03:25 00:07:11 0.477
GB58_dither OH 72 00:03:25 00:07:21 0.466
GB57_dither OH 48 00:02:17 00:04:41 0.488
GB74_dither OH 48 00:02:17 00:04:41 0.488
GB75_dither OH 48 00:02:17 00:04:38 0.493
GB76_dither OH 48 00:02:17 00:04:46 0.479
GB77_dither OH 48 00:02:17 00:04:46 0.479
GB78_dither OH 48 00:02:17 00:04:43 0.484
GB79_dither OH 48 00:02:17 00:04:49 0.474
GB80_dither OH 48 00:02:17 00:04:55 0.465
GB97_dither OH 48 00:02:17 00:04:43 0.484
GB96_dither OH 48 00:02:17 00:04:46 0.479
GB95_dither OH 48 00:02:17 00:04:52 0.470
GB94_dither OH 48 00:02:17 00:04:41 0.488
GB93_dither OH 48 00:02:17 00:04:46 0.479
GB92_dither OH 48 00:02:17 00:04:43 0.484
GB91_dither OH 48 00:02:17 00:04:52 0.470
GB108_dither OH 48 00:02:17 00:04:43 0.484
GB109_dither OH 48 00:02:17 00:04:43 0.483
GB110_dither OH 48 00:02:17 00:04:43 0.484
GB111_dither OH 48 00:02:17 00:04:43 0.484
GB112_dither OH 48 00:02:17 00:04:49 0.474
GB113_dither OH 48 00:02:17 00:04:46 0.479
GB114_dither OH 48 00:02:17 00:04:49 0.474
GB131_dither OH 48 00:02:17 00:04:49 0.474
GB130_dither OH 48 00:02:17 00:04:52 0.470
GB129_dither OH 48 00:02:17 00:04:46 0.479
GB128_dither OH 48 00:02:17 00:04:41 0.488
GB127_dither OH 48 00:02:17 00:04:43 0.484
GB126_dither OH 48 00:02:17 00:04:41 0.488
GB125_dither OH 48 00:02:17 00:06:50 0.335










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 200:28:04 311:18:41 0.644

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 1822:57:27 932:30:17 890:27:09 249:19:36 213:42:31 213:42:31 213:42:31 144:10:03
Observed 677:52:10
(37.19%)		 335:59:51
(36.03%)		 341:52:18
(38.39%)		 52:44:16
(21.15%)		 81:32:52
(38.16%)		 161:23:28
(75.52%)		 46:11:41
(21.62%)		 144:10:03
(N/A)
Remaining 1145:05:17
(62.81%)		 596:30:25
(63.97%)		 548:34:51
(61.61%)		 196:35:19
(78.85%)		 132:09:38
(61.84%)		 52:19:02
(24.48%)		 167:30:50
(78.38%)		 00:00:00
(N/A)











Camera status (2025/05/26)



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