PRIME Observation Log 2024/04/20

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Observation Log (Time is in UT)

Date: 2024/04/20
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 0.00000 +- 0.00000 K
ImageAcquisitionErrors occurred 1 times @
2024-04-21 02:38:24 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:31:35
Morning 06:39:46
Science Observation
(Sun altitude < -10°)
Start 18:53:10
End 06:18:10
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 22:40:24
End 06:18:10


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:12:04 11:24:59 0.718
GB Time 06:24:13 07:37:45 0.839
Non-GB Time 01:47:50 03:47:13 0.475


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 680 00:32:24 00:58:39 0.553
OU 1048 00:49:57 01:47:50 0.463
GB 3872 03:04:33 06:24:13 0.480


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
EVENING_TWILIGHT 320 00:15:15 00:27:40 0.551
all_sky_grid 928 00:44:14 01:33:37 0.472
Bulge 3872 03:04:33 06:24:13 0.480
SKY 120 00:05:43 00:14:13 0.402
MORNING_TWILIGHT 360 00:17:09 00:30:59 0.554


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT 680 00:32:24 00:58:39 0.553
field3117_test 8 00:00:22 00:03:58 0.096
field3117 40 00:01:54 00:03:50 0.497
field3118 40 00:01:54 00:03:50 0.497
field3119 40 00:01:54 00:03:50 0.497
field3120 40 00:01:54 00:03:50 0.497
field3121 40 00:01:54 00:03:50 0.497
field3122 40 00:01:54 00:03:47 0.503
field3123 40 00:01:54 00:03:50 0.497
field3124 40 00:01:54 00:03:50 0.497
field3125 40 00:01:54 00:03:47 0.503
field3126 40 00:01:54 00:03:47 0.503
field3127 40 00:01:54 00:03:52 0.491
field3128 40 00:01:54 00:03:50 0.497
field3129 40 00:01:54 00:03:47 0.503
field3130 40 00:01:54 00:03:50 0.497
field3131 40 00:01:54 00:03:50 0.497
field3132 40 00:01:54 00:03:50 0.497
field3133 40 00:01:54 00:03:50 0.497
field3134 40 00:01:54 00:03:50 0.497
field3135 40 00:01:54 00:03:47 0.503
field3136 40 00:01:54 00:03:50 0.497
field3137 40 00:01:54 00:03:50 0.497
field3138 40 00:01:54 00:03:50 0.497
field3139 40 00:01:54 00:05:28 0.349
GB63_test OH 36 00:01:42 00:15:22 0.112
GB63 OH 144 00:06:51 00:18:46 0.366
GB62 OH 144 00:06:51 00:24:19 0.282
GB61 OH 96 00:04:34 00:08:48 0.519
GB60 OH 96 00:04:34 00:08:06 0.564
GB59 OH 96 00:04:34 00:08:09 0.561
GB58 OH 96 00:04:34 00:08:23 0.545
GB57 OH 96 00:04:34 00:08:09 0.561
GB74 OH 96 00:04:34 00:08:06 0.564
GB75 OH 96 00:04:34 00:08:12 0.558
GB76 OH 96 00:04:34 00:08:12 0.558
GB77 OH 96 00:04:34 00:08:20 0.548
GB78 OH 96 00:04:34 00:08:22 0.546
GB79 OH 144 00:06:51 00:12:37 0.544
GB80 OH 144 00:06:51 00:12:42 0.540
GCsky 120 00:05:43 00:14:13 0.402
GB97 OH 144 00:06:51 00:12:28 0.551
GB96 OH 140 00:06:40 00:12:35 0.530
GB95 OH 96 00:04:34 00:08:09 0.561
GB94 OH 96 00:04:34 00:08:12 0.558
GB93 OH 96 00:04:34 00:08:14 0.555
GB92 OH 96 00:04:34 00:08:17 0.552
GB91 OH 96 00:04:34 00:08:12 0.558
GB108 OH 96 00:04:34 00:08:09 0.561
GB109 OH 96 00:04:34 00:09:16 0.493
GB110 OH 96 00:04:34 00:08:23 0.545
GB111 OH 96 00:04:34 00:08:20 0.548
GB112 OH 96 00:04:34 00:08:12 0.558
GB113 OH 144 00:06:51 00:12:57 0.530
GB114 OH 144 00:06:51 00:12:38 0.543
GB131 OH 144 00:06:51 00:16:06 0.426
GB130 OH 144 00:06:51 00:12:34 0.545
GB129 OH 96 00:04:34 00:08:57 0.511
GB128 OH 96 00:04:34 00:08:17 0.552
GB127 OH 96 00:04:34 00:08:12 0.558
GB126 OH 96 00:04:34 00:08:26 0.542
GB125 OH 96 00:04:34 00:20:51 0.219










Stats so far in 2024
Monthly observed fraction so far in 2024
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 133:42:32 259:10:04 0.516
Feb 136:23:26 268:21:08 0.508
Mar 134:08:27 319:22:49 0.420
Apr 128:57:07 222:42:21 0.579

Observed time so far in 2024
- Total time of each institute is calculated by the following
    [All observation time in 2024] = [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 2024] = [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 2024] = [All observation time in 2024] - [GB observation time in 2024]
    
    [OU, NASA, ABC time in 2024] = 0.24 x [Non-GB observation time in 2024]
    [SAAO time in 2024] = 0.28 x [Non-GB observation time in 2024]
    
- 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 1891:20:15 896:44:53 994:35:22 278:29:06 238:42:05 238:42:05 238:42:05 67:00:22
Observed 533:11:33
(28.19%)		 138:55:36
(15.49%)		 394:15:56
(39.64%)		 03:37:34
(1.30%)		 339:16:56
(142.14%)		 51:21:25
(21.52%)		 00:00:00
(0.00%)		 67:00:22
(N/A)
Remaining 1358:08:42
(71.81%)		 757:49:16
(84.51%)		 600:19:25
(60.36%)		 274:51:31
(98.70%)		 -101:25:09
(0.00%)		 187:20:40
(78.48%)		 238:42:05
(100.00%)		 00:00:00
(N/A)











Camera status (2024/04/20)