PRIME Observation Log 2025/05/02

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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: 2025/05/02
Local observer: Seiya Nakayama
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00000 +- 0.00114 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:20:06
Morning 06:47:35
Science Observation
(Sun altitude < -10°)
Start 18:42:01
End 06:25:37
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 21:54:14
End 06:25:37


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:40:59 11:43:36 0.570
GB Time 04:03:46 08:31:23 0.477
Non-GB Time 02:37:12 03:12:12 0.818


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.)
CALIB 282 00:13:26 00:24:22 0.551
SAAO 287 00:13:40 01:17:59 0.175
NASA 165 00:07:51 00:55:13 0.142
GB 1136 00:54:08 04:03:46 0.222
OU 11 00:00:31 00:11:59 0.044
ABC 11 00:00:31 00:11:59 0.044


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
calibration 6 00:00:17 00:00:47 0.364
ToO 430 00:20:29 01:49:14 0.188
all_sky_grid 44 00:02:05 00:47:58 0.044
Bulge 1136 00:54:08 04:03:46 0.222
TWILIGHT 276 00:13:09 00:23:35 0.558


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
superbias 6 00:00:17 00:00:47 0.364
field1351_test 156 00:07:26 00:46:33 0.160
field1351 120 00:05:43 00:19:27 0.294
field10040_test 32 00:01:31 00:36:08 0.042
field5269_test 12 00:00:34 00:11:50 0.048
field10969_test 154 00:07:20 00:43:14 0.170
GB63_dither_test OH 240 00:11:26 02:03:11 0.093
GB63_dither OH 24 00:01:08 00:06:53 0.166
GB62_dither_test OH 4 00:00:11 00:00:47 0.239
GB62_dither OH 24 00:01:08 00:02:19 0.493
GB61_dither OH 24 00:01:08 00:02:16 0.503
GB60_dither OH 24 00:01:08 00:02:19 0.493
GB59_dither OH 24 00:01:08 00:02:16 0.503
GB58_dither OH 24 00:01:08 00:02:21 0.484
GB57_dither OH 24 00:01:08 00:02:21 0.483
GB74_dither OH 24 00:01:08 00:02:19 0.493
GB75_dither OH 24 00:01:08 00:02:19 0.493
GB76_dither OH 24 00:01:08 00:02:21 0.484
GB77_dither OH 24 00:01:08 00:02:19 0.493
GB78_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 36 00:01:42 00:03:46 0.456
GB80_dither_test OH 112 00:05:20 00:37:23 0.143
GB97_dither OH 24 00:01:08 00:02:16 0.503
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB94_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:16 0.503
GB92_dither OH 24 00:01:08 00:02:22 0.483
GB91_dither OH 24 00:01:08 00:02:16 0.504
GB108_dither OH 24 00:01:08 00:02:21 0.483
GB109_dither OH 24 00:01:08 00:02:21 0.484
GB110_dither OH 24 00:01:08 00:02:21 0.484
GB111_dither OH 24 00:01:08 00:02:21 0.484
GB112_dither OH 24 00:01:08 00:02:21 0.484
GB113_dither OH 24 00:01:08 00:02:16 0.503
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB131_dither OH 24 00:01:08 00:02:21 0.484
GB130_dither OH 24 00:01:08 00:02:21 0.484
GB129_dither OH 24 00:01:08 00:02:19 0.493
GB128_dither OH 24 00:01:08 00:04:08 0.276
FLAT ZO 276 00:13:09 00:23:35 0.558










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 06:40:59 23:25:43 0.285

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 1773:13:22 895:03:52 878:09:30 245:53:03 210:45:28 210:45:28 210:45:28 129:29:23
Observed 484:11:36
(27.31%)		 184:54:49
(20.66%)		 299:16:46
(34.08%)		 41:19:05
(16.80%)		 70:04:53
(33.25%)		 151:32:17
(71.90%)		 36:20:30
(17.24%)		 129:29:23
(N/A)
Remaining 1289:01:46
(72.69%)		 710:09:02
(79.34%)		 578:52:43
(65.92%)		 204:33:58
(83.20%)		 140:40:35
(66.75%)		 59:13:11
(28.10%)		 174:24:58
(82.76%)		 00:00:00
(N/A)











Camera status (2025/05/02)



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