PRIME Observation Log 2025/06/22

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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: 2025/06/22
Local observer: Takuto
Remote observer: None
Weather: Cloudy, Windy
Comment:
Detector Temperature: 114.00014 +- 0.00119 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:04:05
Morning 07:13:44
Science Observation
(Sun altitude < -10°)
Start 18:27:14
End 06:50:35
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:33:44
End 06:03:01


Observed Fraction
Actually Observed Time
(hh:mm:ss)
Expected Observation Time
(hh:mm:ss)
Observed Fraction
(observed/expected)
Total Time 02:27:43 12:23:21 0.199
GB Time 02:27:43 11:29:17 0.214
Non-GB Time 00:00:00 00:54:03 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss)
Total Observation
(hh:mm:ss)
Efficiency
(exp./obs.)
GB 1388 01:06:09 02:27:43 0.448


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss)
Total Observation
(hh:mm:ss)
Efficiency
(exp./obs.)
Bulge 1364 01:05:01 02:24:58 0.448
SKY 24 00:01:08 00:02:44 0.418


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss)
Total Observation
(hh:mm:ss)
Efficiency
(exp./obs.)
GB76_dither_test OH 20 00:00:57 00:05:46 0.165
GB76_dither OH 144 00:06:51 00:14:16 0.481
GB77_dither OH 144 00:06:51 00:15:04 0.455
GB78_dither OH 120 00:05:43 00:12:14 0.467
GB94_dither OH 120 00:05:43 00:12:12 0.468
GB111_dither OH 120 00:05:43 00:12:46 0.447
GB110_dither OH 120 00:05:43 00:12:08 0.471
GB109_dither OH 72 00:03:25 00:07:36 0.451
GB92_dither OH 48 00:02:17 00:04:50 0.473
GB93_dither OH 48 00:02:17 00:05:06 0.448
GB75_dither OH 72 00:03:25 00:07:33 0.454
GB112_dither OH 48 00:02:17 00:05:09 0.443
GB79_dither OH 48 00:02:17 00:04:38 0.493
GB60_dither OH 24 00:01:08 00:02:30 0.456
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB113_dither OH 24 00:01:08 00:02:24 0.476
GB95_dither OH 24 00:01:08 00:02:27 0.466
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:30 0.456
GB74_dither OH 24 00:01:08 00:03:18 0.347
GCsky 24 00:01:08 00:02:44 0.418
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:58 0.385










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 244:24:55 372:31:50 0.656
Jun 156:28:01 271:49:26 0.576

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 1856:51:03 950:28:15 906:22:47 253:47:10 217:31:52 217:31:52 217:31:52 152:54:32
Observed 878:17:03
(47.30%)
504:51:29
(53.12%)
373:25:34
(41.20%)
61:15:49
(24.14%)
88:27:05
(40.66%)
170:36:46
(78.43%)
53:05:53
(24.41%)
152:54:32
(N/A)
Remaining 978:33:59
(52.70%)
445:36:46
(46.88%)
532:57:13
(58.80%)
192:31:21
(75.86%)
129:04:47
(59.34%)
46:55:05
(21.57%)
164:25:58
(75.59%)
00:00:00
(N/A)











Camera status (2025/06/22)



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