PRIME Observation Log 2026/03/25

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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: 2026/03/25
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.49993 +- 0.00221 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:03:34
Morning 06:22:00
Science Observation
(Sun altitude < -10°)
Start 19:24:53
End 06:00:40
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:24:38
End 06:00:40


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:27:45 10:35:46 0.610
GB Time 04:51:53 05:36:01 0.869
Non-GB Time 01:35:51 04:59:45 0.320


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
SAAO 1412 01:07:18 01:35:51 0.702
GB 2720 02:09:39 04:51:53 0.444
CALIB 212 00:10:06 00:18:19 0.551


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 1412 01:07:18 01:35:51 0.702
Bulge 2600 02:03:56 04:37:52 0.446
SKY 120 00:05:43 00:14:01 0.408
TWILIGHT 212 00:10:06 00:18:19 0.551


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field16477_test 44 00:02:05 00:15:53 0.132
field16477 684 00:32:36 00:41:22 0.788
field17744 684 00:32:36 00:38:35 0.845
GB80_test OJ 8 00:00:22 00:03:11 0.120
GB80_dither OJ 48 00:02:17 00:08:14 0.278
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:43 0.484
GCsky 120 00:05:43 00:14:01 0.408
GB91_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:35 0.498
GB93_dither OJ 48 00:02:17 00:04:32 0.504
GB94_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:38 0.493
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB97_dither OJ 48 00:02:17 00:04:32 0.503
GB114_dither OJ 48 00:02:17 00:04:32 0.503
GB113_dither OJ 48 00:02:17 00:04:38 0.493
GB112_dither OJ 48 00:02:17 00:04:35 0.498
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB110_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:38 0.493
GB108_dither OJ 48 00:02:17 00:09:07 0.251
GB76_dither_test OH 12 00:00:34 00:03:47 0.151
GB76_dither OH 144 00:06:51 00:14:06 0.487
GB77_dither OH 144 00:06:51 00:14:03 0.488
GB78_dither OH 144 00:06:51 00:14:06 0.487
GB94_dither OH 144 00:06:51 00:14:03 0.488
GB111_dither OH 144 00:06:51 00:14:11 0.484
GB110_dither OH 168 00:08:00 00:17:38 0.454
GB109_dither OH 72 00:03:25 00:07:03 0.487
GB92_dither OH 48 00:02:17 00:04:41 0.488
GB93_dither OH 48 00:02:17 00:04:49 0.474
GB75_dither OH 72 00:03:25 00:07:25 0.462
GB112_dither OH 72 00:03:25 00:07:05 0.483
GB79_dither OH 72 00:03:25 00:10:19 0.333
GB60_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:24 0.474
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB74_dither OH 24 00:01:08 00:02:33 0.448
GB95_dither OH 48 00:02:17 00:04:43 0.484
GB113_dither OH 48 00:02:17 00:05:23 0.425
GB96_dither OH 24 00:01:08 00:02:21 0.484
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 00:06:03 0.189
GB110_dither_test OH 12 00:00:34 00:03:36 0.158
FLAT OJ 212 00:10:06 00:18:19 0.551










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 77:23:33 254:35:35 0.304

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 1734:53:02 924:57:57 809:55:05 226:46:37 194:22:49 194:22:49 194:22:49 25:56:07
Observed 232:35:56
(13.41%)		 78:57:54
(8.54%)		 153:38:02
(18.97%)		 57:08:52
(25.20%)		 30:52:21
(15.88%)		 37:15:59
(19.17%)		 28:20:48
(14.58%)		 25:56:07
(N/A)
Remaining 1502:17:06
(86.59%)		 846:00:03
(91.46%)		 656:17:02
(81.03%)		 169:37:44
(74.80%)		 163:30:27
(84.12%)		 157:06:49
(80.83%)		 166:02:00
(85.42%)		 00:00:00
(N/A)











Camera status (2026/03/25)



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