PRIME Observation Log 2023/10/01

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Observation Log (Time is in UT)

Date: 2023/10/01
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 0.00000 +- 0.00000 K
ImageAcquisitionErrors occurred 1 times @
2023-10-02 05:42:18 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:00:54
Morning 05:51:19
Science Observation
(Sun altitude < -10°)
Start 19:22:29
End 05:29:46
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:22:29
End 23:27:48


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:56:00 10:07:16 0.389
GB Time 03:17:48 04:05:18 0.806
Non-GB Time 00:38:11 06:01:57 0.106


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 636 00:30:18 01:03:57 0.474
GB 1696 01:20:50 03:17:48 0.409
OU 136 00:06:28 00:38:11 0.170


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 636 00:30:18 01:03:57 0.474
Bulge 1696 01:20:50 03:17:48 0.409
SKY 136 00:06:28 00:38:11 0.170


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 240 00:11:26 00:25:34 0.447
TEST OH 56 00:02:40 00:29:02 0.092
GCsky 96 00:04:34 00:10:07 0.452
GB57 OH 48 00:02:17 00:04:07 0.555
GB58 OH 48 00:02:17 00:04:04 0.561
GB59 OH 56 00:02:40 00:04:49 0.553
GB60 OH 48 00:02:17 00:05:42 0.400
GB61 OH 48 00:02:17 00:04:07 0.555
GB62 OH 48 00:02:17 00:04:07 0.555
GB63 OH 48 00:02:17 00:05:06 0.448
TEST 40 00:01:54 00:28:04 0.068
GB74 OH 48 00:02:17 00:04:15 0.537
GB75 OH 48 00:02:17 00:04:04 0.561
GB76 OH 48 00:02:17 00:04:07 0.555
GB77 OH 48 00:02:17 00:05:53 0.388
GB78 OH 48 00:02:17 00:04:07 0.555
GB79 OH 48 00:02:17 00:04:04 0.561
GB80 OH 48 00:02:17 00:14:10 0.161
GB91 OH 48 00:02:17 00:08:30 0.269
GB92 OH 48 00:02:17 00:04:07 0.555
GB93 OH 48 00:02:17 00:04:04 0.561
GB94 OH 48 00:02:17 00:04:01 0.568
GB95 OH 48 00:02:17 00:08:42 0.263
GB96 OH 48 00:02:17 00:04:04 0.561
GB97 OH 48 00:02:17 00:06:08 0.373
GB108 OH 48 00:02:17 00:04:04 0.561
GB109 OH 48 00:02:17 00:04:04 0.561
GB110 OH 48 00:02:17 00:04:07 0.555
GB111 OH 48 00:02:17 00:04:32 0.503
GB112 OH 48 00:02:17 00:04:04 0.561
GB113 OH 48 00:02:17 00:04:04 0.561
GB114 OH 48 00:02:17 00:05:34 0.411
GB125 OH 48 00:02:17 00:04:07 0.555
GB126 OH 48 00:02:17 00:04:04 0.561
GB127 OH 48 00:02:17 00:04:57 0.461
GB128 OH 48 00:02:17 00:04:07 0.555
GB129 OH 48 00:02:17 00:04:04 0.561
GB130 OH 48 00:02:17 00:04:20 0.527
FLAT OJ 396 00:18:52 00:38:22 0.492










Stats so far in 2023
Monthly observed fraction so far in 2023
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 18:43:03 259:20:03 0.072
Feb 51:45:11 258:50:12 0.200
Mar 55:18:59 318:34:15 0.174
Apr 77:47:40 337:41:57 0.230
May 97:43:38 372:13:44 0.263
Jun 49:38:22 370:47:30 0.134
Jul 188:52:24 377:38:54 0.500
Aug 166:19:41 357:47:22 0.465
Sep 168:01:16 319:07:11 0.527
Oct 03:56:00 10:07:16 0.389

Observed time so far in 2023
- Total time of each institute is calculated by the following
    [All observation time in 2023] = [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 2023] = [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 2023] = [All observation time in 2023] - [GB observation time in 2023]
    
    [OU, NASA, ABC time in 2023] = 0.24 x [Non-GB observation time in 2023]
    [SAAO time in 2023] = 0.28 x [Non-GB observation time in 2023]
    
- 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 1275:56:37 315:04:25 960:52:12 269:02:37 230:36:31 230:36:31 230:36:31 16:46:09
Observed 878:06:20
(68.82%)		 263:43:56
(83.71%)		 614:22:24
(63.94%)		 00:00:00
(0.00%)		 603:37:01
(261.75%)		 10:45:22
(4.66%)		 00:00:00
(0.00%)		 16:46:09
(N/A)
Remaining 397:50:17
(31.18%)		 51:20:28
(16.29%)		 346:29:48
(36.06%)		 269:02:37
(100.00%)		 -374:59:31
(0.00%)		 219:51:09
(95.34%)		 230:36:31
(100.00%)		 00:00:00
(N/A)











Camera status (2023/10/01)