PRIME Observation Log 2025/03/14

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Observation Log (Time is in UT)

Date: 2025/03/14
Local observer: Yuki Satoh,
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 113.99979 +- 0.00210 K
ImageAcquisitionErrors occurred 1 times @
2025-03-15 04:31:09 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:17:34
Morning 06:14:20
Science Observation
(Sun altitude < -10°)
Start 19:39:03
End 05:52:49
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:06:52
End 05:52:49


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:09:53 10:13:45 0.309
GB Time 03:09:53 04:45:56 0.664
Non-GB Time 00:00:00 05:27:48 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 1528 01:12:50 03:09:53 0.384
CALIB 176 00:08:23 00:15:12 0.552


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 1476 01:10:21 02:51:02 0.411
SKY 52 00:02:28 00:18:51 0.131
TWILIGHT 176 00:08:23 00:15:12 0.552


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB63_dither_test OH 24 00:01:08 00:16:37 0.069
GB63_dither OH 56 00:02:40 00:06:39 0.400
GCsky_test 28 00:01:20 00:16:15 0.082
GB62_dither OH 48 00:02:17 00:04:38 0.493
GB61_dither OH 48 00:02:17 00:04:38 0.493
GB60_dither OH 48 00:02:17 00:04:41 0.488
GB59_dither OH 48 00:02:17 00:04:43 0.483
GB58_dither OH 48 00:02:17 00:05:23 0.425
GB57_dither OH 48 00:02:17 00:04:35 0.498
GB74_dither OH 48 00:02:17 00:04:57 0.461
GB75_dither OH 48 00:02:17 00:04:38 0.493
GB76_dither OH 48 00:02:17 00:04:57 0.461
GB77_dither OH 48 00:02:17 00:04:52 0.470
GB78_dither OH 48 00:02:17 00:05:00 0.456
GB79_dither OH 48 00:02:17 00:04:57 0.461
GB80_dither OH 48 00:02:17 00:04:55 0.465
GB97_dither OH 48 00:02:17 00:04:57 0.461
GB96_dither OH 48 00:02:17 00:04:43 0.484
GB95_dither OH 48 00:02:17 00:04:55 0.465
GB94_dither OH 48 00:02:17 00:05:14 0.436
GB93_dither OH 48 00:02:17 00:04:41 0.488
GB92_dither OH 48 00:02:17 00:04:57 0.461
GB91_dither OH 48 00:02:17 00:04:57 0.461
GB108_dither OH 48 00:02:17 00:04:38 0.493
GB109_dither OH 48 00:02:17 00:04:55 0.465
GB110_dither OH 48 00:02:17 00:04:43 0.484
GB111_dither OH 48 00:02:17 00:07:46 0.295
GB112_dither OH 24 00:01:08 00:02:55 0.391
GB113_dither OH 28 00:01:20 00:06:23 0.209
GB114_dither OH 24 00:01:08 00:02:19 0.493
GB131_dither OH 24 00:01:08 00:02:19 0.493
GB130_dither OH 24 00:01:08 00:02:21 0.484
GB129_dither OH 24 00:01:08 00:02:16 0.503
GB128_dither OH 24 00:01:08 00:02:19 0.493
GB127_dither OH 24 00:01:08 00:02:21 0.484
GB126_dither OH 24 00:01:08 00:02:19 0.493
GB125_dither OH 24 00:01:08 00:02:35 0.440
GCsky 24 00:01:08 00:02:35 0.440
FLAT_test OH 4 00:00:11 00:00:22 0.503
FLAT OH 172 00:08:11 00:14:49 0.553










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 61:09:21 140:01:04 0.437

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 1778:01:46 913:52:02 864:09:44 241:57:55 207:23:56 207:23:56 207:23:56 93:38:01
Observed 218:39:34
(12.30%)		 39:47:39
(4.35%)		 178:51:54
(20.70%)		 16:23:46
(6.78%)		 44:43:05
(21.56%)		 105:13:50
(50.74%)		 12:31:12
(6.04%)		 93:38:01
(N/A)
Remaining 1559:22:12
(87.70%)		 874:04:22
(95.65%)		 685:17:49
(79.30%)		 225:34:08
(93.22%)		 162:40:51
(78.44%)		 102:10:05
(49.26%)		 194:52:44
(93.96%)		 00:00:00
(N/A)











Camera status (2025/03/14)