PRIME Observation Log 2025/04/03

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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: 2025/04/03
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 113.99989 +- 0.00105 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:51:46
Morning 06:28:18
Science Observation
(Sun altitude < -10°)
Start 19:13:05
End 06:06:57
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:48:15
End 06:06:57


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:25:05 10:53:52 0.497
GB Time 04:25:02 06:18:42 0.700
Non-GB Time 01:00:03 04:35:09 0.218


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.)
GB 2656 02:06:36 04:25:02 0.478
CALIB 12 00:00:34 00:01:49 0.314
SAAO 136 00:06:28 00:15:00 0.432
OU 136 00:06:28 00:15:00 0.432
NASA 136 00:06:28 00:15:00 0.432
ABC 136 00:06:28 00:15:00 0.432


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 2608 02:04:18 04:19:46 0.479
all_sky_grid 544 00:25:55 01:00:03 0.432
SKY 48 00:02:17 00:05:15 0.435
TWILIGHT 12 00:00:34 00:01:49 0.314


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB125_dither OH 28 00:01:20 00:03:34 0.374
field3147_test 24 00:01:08 00:08:34 0.133
field3147 40 00:01:54 00:03:47 0.503
field3148 40 00:01:54 00:03:47 0.503
field3149 40 00:01:54 00:03:52 0.491
field3531 40 00:01:54 00:03:50 0.497
field3532 40 00:01:54 00:03:50 0.497
field3533 40 00:01:54 00:03:50 0.497
field3534 40 00:01:54 00:04:32 0.420
GB63_dither_test OJ 32 00:01:31 00:07:22 0.207
GB63_dither OJ 80 00:03:48 00:07:58 0.478
field3535 40 00:01:54 00:03:55 0.485
field3536 40 00:01:54 00:03:50 0.497
field3732 40 00:01:54 00:03:47 0.503
field3733 40 00:01:54 00:03:47 0.503
field3734 40 00:01:54 00:03:47 0.503
field3735 40 00:01:54 00:04:51 0.392
GB62_dither OJ 48 00:02:17 00:04:32 0.503
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:04:35 0.498
GB59_dither OJ 48 00:02:17 00:04:35 0.498
GB58_dither OJ 48 00:02:17 00:04:32 0.503
GB57_dither OJ 48 00:02:17 00:04:32 0.503
GB74_dither OJ 48 00:02:17 00:04:38 0.493
GB75_dither OJ 48 00:02:17 00:04:38 0.493
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB77_dither OJ 48 00:02:17 00:04:32 0.503
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB80_dither OJ 48 00:02:17 00:04:38 0.493
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:32 0.503
GB95_dither OJ 48 00:02:17 00:04:38 0.493
GB94_dither OJ 48 00:02:17 00:04:32 0.503
GB93_dither OJ 48 00:02:17 00:04:38 0.493
GB92_dither OJ 48 00:02:17 00:04:35 0.498
GB91_dither OJ 48 00:02:17 00:04:38 0.493
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:32 0.503
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB112_dither OJ 48 00:02:17 00:04:32 0.503
GB113_dither OJ 48 00:02:17 00:04:35 0.498
GB114_dither OJ 48 00:02:17 00:04:35 0.498
GB131_dither OJ 48 00:02:17 00:04:38 0.493
GB130_dither OJ 48 00:02:17 00:04:32 0.503
GB129_dither OJ 48 00:02:17 00:04:38 0.493
GB128_dither OJ 48 00:02:17 00:04:38 0.493
GB127_dither OJ 48 00:02:17 00:04:35 0.498
GB126_dither OJ 48 00:02:17 00:04:32 0.503
GB125_dither OJ 48 00:02:17 00:04:52 0.470
GCsky 48 00:02:17 00:05:15 0.435
GB63_dither_test OH 20 00:00:57 00:04:19 0.221
GB63_dither OH 24 00:01:08 00:02:19 0.493
GB62_dither OH 24 00:01:08 00:02:19 0.493
GB61_dither OH 24 00:01:08 00:02:22 0.483
GB60_dither OH 24 00:01:08 00:02:21 0.484
GB59_dither OH 24 00:01:08 00:02:21 0.484
GB58_dither OH 24 00:01:08 00:02:21 0.484
GB57_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:19 0.493
GB75_dither OH 24 00:01:08 00:02:21 0.484
GB76_dither OH 24 00:01:08 00:02:19 0.493
GB77_dither OH 24 00:01:08 00:02:19 0.493
GB78_dither OH 24 00:01:08 00:02:21 0.484
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB94_dither OH 24 00:01:08 00:02:21 0.484
GB93_dither OH 24 00:01:08 00:02:21 0.484
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB109_dither OH 24 00:01:08 00:02:19 0.493
GB110_dither OH 24 00:01:08 00:02:21 0.483
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 00:02:24 0.474
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB131_dither OH 24 00:01:08 00:02:27 0.465
GB130_dither OH 24 00:01:08 00:02:24 0.474
GB129_dither OH 24 00:01:08 00:02:24 0.474
GB128_dither OH 24 00:01:08 00:02:21 0.484
GB127_dither OH 24 00:01:08 00:02:21 0.484
GB126_dither OH 24 00:01:08 00:02:21 0.484
FLAT_test OY 4 00:00:11 00:00:47 0.239
FLAT OY 8 00:00:22 00:01:01 0.373










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 17:55:14 32:35:52 0.550

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 1787:54:20 913:52:26 874:01:54 244:43:43 209:46:03 209:46:03 209:46:03 106:33:02
Observed 334:23:11
(18.70%)		 95:36:06
(10.46%)		 238:47:05
(27.32%)		 28:30:52
(11.65%)		 58:22:41
(27.83%)		 127:15:14
(60.66%)		 24:38:17
(11.75%)		 106:33:02
(N/A)
Remaining 1453:31:08
(81.30%)		 818:16:19
(89.54%)		 635:14:48
(72.68%)		 216:12:51
(88.35%)		 151:23:22
(72.17%)		 82:30:49
(39.34%)		 185:07:45
(88.25%)		 00:00:00
(N/A)











Camera status (2025/04/03)



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