PRIME Observation Log 2026/03/27

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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: 2026/03/27
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.49974 +- 0.00369 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:00:59
Morning 06:23:23
Science Observation
(Sun altitude < -10°)
Start 19:22:17
End 06:02:03
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:16:47
End 06:02:03


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:56:37 10:39:46 0.745
GB Time 05:28:49 05:45:16 0.952
Non-GB Time 02:27:47 04:54:29 0.502


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
SAAO 2088 01:39:31 02:27:47 0.673
GB 3164 02:30:49 05:28:49 0.459
CALIB 112 00:05:20 00:09:50 0.542


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 2088 01:39:31 02:27:47 0.673
Bulge 3092 02:27:23 05:16:58 0.465
SKY 72 00:03:25 00:11:51 0.289
TWILIGHT 112 00:05:20 00:09:50 0.542


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field11519_test 32 00:01:31 00:15:16 0.100
field11519 684 00:32:36 00:42:06 0.774
field14604_test 4 00:00:11 00:01:13 0.156
field14604 684 00:32:36 00:43:50 0.744
field19038 684 00:32:36 00:45:20 0.719
GB83_test OH 20 00:00:57 00:10:57 0.087
GB83_dither OH 24 00:01:08 00:02:16 0.503
GB100_dither OH 24 00:01:08 00:02:16 0.503
GB117_dither OH 24 00:01:08 00:02:21 0.483
GB82_dither OH 24 00:01:08 00:02:19 0.493
GB99_dither OH 24 00:01:08 00:02:21 0.483
GB116_dither OH 24 00:01:08 00:02:21 0.484
GB81_dither OH 24 00:01:08 00:02:19 0.493
GB98_dither OH 24 00:01:08 00:02:19 0.493
GB115_dither OH 24 00:01:08 00:02:30 0.456
GB63_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 24 00:01:08 00:02:16 0.503
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:21 0.483
GB62_dither OH 24 00:01:08 00:02:19 0.493
GB61_dither OH 24 00:01:08 00:04:25 0.259
GB76_dither OH 288 00:13:43 00:28:31 0.481
GB77_dither OH 264 00:12:35 00:26:07 0.482
GB78_dither OH 240 00:11:26 00:23:31 0.486
GB94_dither OH 264 00:12:35 00:25:56 0.485
GB111_dither OH 264 00:12:35 00:25:39 0.491
GB110_dither OH 264 00:12:35 00:25:50 0.487
GB109_dither OH 144 00:06:51 00:14:14 0.482
GB92_dither OH 72 00:03:25 00:07:00 0.490
GB93_dither OH 72 00:03:25 00:07:08 0.480
GB75_dither OH 120 00:05:43 00:11:35 0.493
GB112_dither OH 120 00:05:43 00:11:47 0.485
GB79_dither OH 96 00:04:34 00:09:47 0.467
GB60_dither OH 72 00:03:25 00:07:08 0.480
GB95_dither OH 48 00:02:17 00:04:38 0.493
GB113_dither OH 48 00:02:17 00:04:41 0.488
GCsky 72 00:03:25 00:11:51 0.289
GB57_dither OH 24 00:01:08 00:02:19 0.493
GB58_dither OH 24 00:01:08 00:02:24 0.474
GB59_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 00:02:24 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 00:02:24 0.474
GB125_dither OH 24 00:01:08 00:02:44 0.418
GB96_dither OH 24 00:01:08 00:02:47 0.411
GB108_dither OH 24 00:01:08 00:02:24 0.474
GB91_dither OH 24 00:01:08 00:03:32 0.324
GB74_dither OH 24 00:01:08 00:02:21 0.484
FLAT ZO 112 00:05:20 00:09:50 0.542










Stats so far in 2026
Monthly observed fraction so far in 2026
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 55:55:01 259:31:55 0.215
Feb 99:19:50 259:06:19 0.383
Mar 87:56:26 275:53:08 0.319

Observed time so far in 2026
- Total time of each institute is calculated by the following
    [All observation time in 2026] = [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 2026] = [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 2026] = [All observation time in 2026] - [GB observation time in 2026]
    
    [OU, NASA, ABC time in 2026] = 0.24 x [Non-GB observation time in 2026]
    [SAAO time in 2026] = 0.28 x [Non-GB observation time in 2026]
    
- 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 1734:47:09 924:59:31 809:47:37 226:44:32 194:21:01 194:21:01 194:21:01 26:05:58
Observed 243:08:49
(14.02%)		 84:42:25
(9.16%)		 158:26:23
(19.57%)		 61:57:14
(27.32%)		 30:52:21
(15.89%)		 37:15:59
(19.17%)		 28:20:48
(14.59%)		 26:05:58
(N/A)
Remaining 1491:38:19
(85.98%)		 840:17:05
(90.84%)		 651:21:14
(80.43%)		 164:47:18
(72.68%)		 163:28:40
(84.11%)		 157:05:02
(80.83%)		 166:00:13
(85.41%)		 00:00:00
(N/A)











Camera status (2026/03/27)



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