PRIME Observation Log 2026/03/29

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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: 2026/03/29
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.49989 +- 0.00124 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:58:25
Morning 06:24:45
Science Observation
(Sun altitude < -10°)
Start 19:19:42
End 06:03:25
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:08:55
End 06:03:25


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 08:24:47 10:43:42 0.784
GB Time 05:36:50 05:54:30 0.950
Non-GB Time 02:47:57 04:49:12 0.581


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 400 00:19:04 00:34:34 0.551
SAAO 986 00:46:59 01:17:21 0.608
GB 3172 02:31:11 05:36:50 0.449
OU 294 00:14:00 00:30:11 0.464
NASA 294 00:14:00 00:30:11 0.464
ABC 294 00:14:00 00:30:11 0.464


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 400 00:19:04 00:34:34 0.551
all_sky_grid 1868 01:29:02 02:47:57 0.530
Bulge 3076 02:26:37 05:26:43 0.449
SKY 96 00:04:34 00:10:07 0.452


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 40 00:01:54 00:03:40 0.518
field22593_test 8 00:00:22 00:04:59 0.076
field22593 684 00:32:36 00:42:09 0.773
field2387_test 36 00:01:42 00:10:08 0.169
field2387 60 00:02:51 00:05:43 0.499
field2388 60 00:02:51 00:05:49 0.491
field2389 60 00:02:51 00:05:46 0.495
field2390 60 00:02:51 00:05:43 0.499
field2391 60 00:02:51 00:05:43 0.499
field2392 60 00:02:51 00:05:43 0.499
field2393 60 00:02:51 00:05:46 0.495
field2394 60 00:02:51 00:05:43 0.499
field2395 60 00:02:51 00:05:46 0.495
field2396 60 00:02:51 00:05:46 0.495
field2397 60 00:02:51 00:05:43 0.499
field2398 60 00:02:51 00:05:40 0.503
field2399 60 00:02:51 00:05:43 0.499
field2400 60 00:02:51 00:05:52 0.487
field2401 60 00:02:51 00:05:43 0.499
field2402 60 00:02:51 00:05:43 0.499
field2403 60 00:02:51 00:05:40 0.503
field2404 60 00:02:51 00:05:43 0.499
field2405 60 00:02:51 00:07:13 0.396
GB83_test OH 16 00:00:45 00:04:27 0.171
GB83_dither OH 24 00:01:08 00:02:19 0.493
GB100_dither OH 24 00:01:08 00:02:16 0.503
GB117_dither OH 24 00:01:08 00:02:19 0.493
GB82_dither OH 24 00:01:08 00:02:16 0.503
GB99_dither OH 24 00:01:08 00:02:21 0.484
GB116_dither OH 24 00:01:08 00:02:21 0.484
GB81_dither OH 24 00:01:08 00:02:21 0.484
GB98_dither OH 24 00:01:08 00:02:16 0.503
GB115_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
GB114_dither OH 24 00:01:08 00:05:38 0.203
GCsky 96 00:04:34 00:10:07 0.452
GB76_dither OH 144 00:06:51 00:14:00 0.490
GB77_dither OH 144 00:06:51 00:14:00 0.490
GB78_dither OH 144 00:06:51 00:14:14 0.482
GB94_dither OH 144 00:06:51 00:14:11 0.484
GB111_dither OH 144 00:06:51 00:14:06 0.487
GB110_dither OH 144 00:06:51 00:14:03 0.488
GB109_dither OH 72 00:03:25 00:07:03 0.487
GB92_dither OH 48 00:02:17 00:04:35 0.498
GB93_dither OH 48 00:02:17 00:04:43 0.484
GB75_dither OH 72 00:03:25 00:06:51 0.500
GB112_dither OH 64 00:03:03 00:10:38 0.287
GB79_dither OH 48 00:02:17 00:13:11 0.173
GB60_dither OH 24 00:01:08 00:02:19 0.493
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB113_dither OH 24 00:01:08 00:02:21 0.484
GB78_test OJ 4 00:00:11 00:01:18 0.145
GB60_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:38 0.493
GB76_dither OJ 48 00:02:17 00:04:38 0.493
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB79_dither OJ 48 00:02:17 00:04:38 0.493
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:32 0.503
GB108_dither OJ 48 00:02:17 00:04:38 0.493
GB109_dither OJ 48 00:02:17 00:04:38 0.493
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:41 0.488
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:41 0.488
GB114_dither OJ 48 00:02:17 00:04:41 0.488
GB131_dither OJ 48 00:02:17 00:04:32 0.503
GB130_dither OJ 48 00:02:17 00:04:38 0.493
GB129_dither OJ 48 00:02:17 00:04:38 0.493
GB128_dither OJ 48 00:02:17 00:04:35 0.498
GB127_dither OJ 48 00:02:17 00:04:35 0.498
GB126_dither OJ 48 00:02:17 00:04:43 0.484
GB125_dither OJ 48 00:02:17 00:08:39 0.264
GB76_test OH 16 00:00:45 00:05:40 0.134
GB108_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:24 0.474
GB74_dither OH 24 00:01:08 00:02:33 0.448
FLAT OH 360 00:17:09 00:30:53 0.555










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 105:06:00 297:18:36 0.354

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 1741:13:59 930:15:21 810:58:38 227:04:25 194:38:04 194:38:04 194:38:04 27:07:16
Observed 260:18:23
(14.95%)		 95:50:27
(10.30%)		 164:27:56
(20.28%)		 66:28:11
(29.27%)		 31:22:33
(16.12%)		 37:46:11
(19.41%)		 28:51:00
(14.82%)		 27:07:16
(N/A)
Remaining 1480:55:36
(85.05%)		 834:24:53
(89.70%)		 646:30:42
(79.72%)		 160:36:14
(70.73%)		 163:15:31
(83.88%)		 156:51:53
(80.59%)		 165:47:03
(85.18%)		 00:00:00
(N/A)











Camera status (2026/03/29)



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