PRIME Observation Log 2026/02/10

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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: 2026/02/10
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 112.00010 +- 0.00106 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:55:17
Morning 05:46:57
Science Observation
(Sun altitude < -10°)
Start 20:18:18
End 05:23:56
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 03:13:41
End 05:23:56


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:52:51 09:05:38 0.757
GB Time 01:43:42 02:10:14 0.796
Non-GB Time 05:09:09 06:55:23 0.744


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 148 00:07:03 00:13:45 0.513
GB 964 00:45:57 01:43:42 0.443
SAAO 774 00:36:53 01:17:17 0.477
OU 774 00:36:53 01:17:17 0.477
NASA 774 00:36:53 01:17:17 0.477
ABC 774 00:36:53 01:17:17 0.477


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 148 00:07:03 00:13:45 0.513
all_sky_grid 3096 02:27:34 05:09:09 0.477
Bulge 884 00:42:08 01:33:42 0.450
SKY 80 00:03:48 00:10:00 0.381


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OH 144 00:06:51 00:13:22 0.513
field13624_test 24 00:01:08 00:11:03 0.103
field13624 60 00:02:51 00:05:40 0.503
field13625 60 00:02:51 00:05:46 0.495
field13626 60 00:02:51 00:05:43 0.499
field13627 60 00:02:51 00:05:43 0.499
field13628 60 00:02:51 00:05:49 0.491
field13629 60 00:02:51 00:05:43 0.499
field13630 60 00:02:51 00:05:46 0.495
field13631 60 00:02:51 00:05:46 0.495
field13632 60 00:02:51 00:05:43 0.499
field13633 60 00:02:51 00:06:00 0.476
field13937 60 00:02:51 00:05:43 0.499
field13938 60 00:02:51 00:05:46 0.495
field13939 60 00:02:51 00:05:43 0.499
field13940 60 00:02:51 00:05:46 0.495
field13941 60 00:02:51 00:05:46 0.495
field13942 60 00:02:51 00:05:43 0.499
field13943 60 00:02:51 00:05:43 0.499
field13944 60 00:02:51 00:05:43 0.499
field13945 60 00:02:51 00:05:46 0.495
field13946 60 00:02:51 00:05:57 0.480
field14251 60 00:02:51 00:05:46 0.495
field14252 60 00:02:51 00:05:49 0.491
field14253 60 00:02:51 00:05:46 0.495
field14254 60 00:02:51 00:05:43 0.499
field14255 60 00:02:51 00:05:40 0.503
field14256 60 00:02:51 00:05:43 0.499
field14257 60 00:02:51 00:05:46 0.495
field14258 60 00:02:51 00:05:46 0.495
field14259 60 00:02:51 00:05:46 0.495
field14260 60 00:02:51 00:05:54 0.484
field14565 60 00:02:51 00:05:43 0.499
field14566 60 00:02:51 00:05:46 0.495
field14567 60 00:02:51 00:05:43 0.499
field14568 60 00:02:51 00:05:46 0.495
field14569 60 00:02:51 00:05:43 0.499
field14570 60 00:02:51 00:05:43 0.499
field14571 60 00:02:51 00:05:40 0.503
field14572 60 00:02:51 00:05:40 0.503
field14573 60 00:02:51 00:05:43 0.499
field14574 60 00:02:51 00:05:59 0.477
field1487_test 12 00:00:34 00:03:22 0.169
field1487 60 00:02:51 00:06:28 0.442
field1488 60 00:02:51 00:05:46 0.495
field1489 60 00:02:51 00:05:43 0.499
field1490 60 00:02:51 00:05:43 0.499
field1491 60 00:02:51 00:05:43 0.499
field1492 60 00:02:51 00:05:43 0.499
field1493 60 00:02:51 00:05:43 0.499
field1494 60 00:02:51 00:05:40 0.503
field1495 60 00:02:51 00:05:40 0.503
field1496 60 00:02:51 00:05:43 0.499
field1497 60 00:02:51 00:05:59 0.477
GB80_test OH 20 00:00:57 00:05:18 0.180
GB80_dither OH 24 00:01:08 00:02:27 0.465
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB113_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB78_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB111_dither OH 24 00:01:08 00:02:24 0.474
GB94_dither OH 24 00:01:08 00:02:19 0.493
GB77_dither OH 24 00:01:08 00:02:24 0.474
GB60_dither OH 24 00:01:08 00:02:24 0.474
GB76_dither OH 24 00:01:08 00:02:21 0.484
GB93_dither OH 24 00:01:08 00:02:19 0.493
GB110_dither OH 24 00:01:08 00:02:21 0.484
GB109_dither OH 24 00:01:08 00:02:19 0.493
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB75_dither OH 24 00:01:08 00:02:21 0.484
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB108_dither OH 24 00:01:08 00:02:30 0.456
GCsky 72 00:03:25 00:07:47 0.440
GCsky_test 8 00:00:22 00:02:12 0.173
GB74_dither OJ 48 00:02:17 00:04:41 0.488
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:41 0.488
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:08:30 0.269
FLAT_test OH 4 00:00:11 00:00:22 0.503










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 33:16:42 89:26:03 0.372

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 1803:36:48 937:24:15 866:12:32 242:32:18 207:53:24 207:53:24 207:53:24 17:20:40
Observed 89:11:45
(4.95%)		 06:33:30
(0.70%)		 82:38:15
(9.54%)		 21:47:52
(8.99%)		 19:24:04
(9.33%)		 24:33:45
(11.82%)		 16:52:32
(8.12%)		 17:20:40
(N/A)
Remaining 1714:25:02
(95.05%)		 930:50:45
(99.30%)		 783:34:17
(90.46%)		 220:44:26
(91.01%)		 188:29:19
(90.67%)		 183:19:39
(88.18%)		 191:00:52
(91.88%)		 00:00:00
(N/A)











Camera status (2026/02/10)



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