PRIME Observation Log 2026/02/19

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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: 2026/02/19
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 112.00009 +- 0.00092 K
ImageAcquisitionErrors occurred 1 times @
2026-02-20 03:38:07 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:46:00
Morning 05:55:22
Science Observation
(Sun altitude < -10°)
Start 20:08:28
End 05:32:55
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 02:38:18
End 05:32:55


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:29:53 09:24:27 0.797
GB Time 01:27:24 02:54:36 0.501
Non-GB Time 06:02:28 06:29:50 0.930


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 640 00:30:30 01:27:24 0.349
SAAO 775 00:36:56 01:30:37 0.408
OU 775 00:36:56 01:30:37 0.408
NASA 775 00:36:56 01:30:37 0.408
ABC 775 00:36:56 01:30:37 0.408


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 3100 02:27:46 06:02:28 0.408
Bulge 616 00:29:21 01:24:49 0.346
SKY 24 00:01:08 00:02:35 0.443


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field13313_test 40 00:01:54 00:24:00 0.079
field13313 60 00:02:51 00:06:22 0.448
field13314 60 00:02:51 00:06:20 0.451
field13315 60 00:02:51 00:05:46 0.495
field13316 60 00:02:51 00:06:06 0.469
field13317 60 00:02:51 00:06:20 0.451
field13318 60 00:02:51 00:06:59 0.409
field13319 60 00:02:51 00:06:56 0.412
field13320 60 00:02:51 00:06:01 0.475
field13321 60 00:02:51 00:06:16 0.456
field13322 60 00:02:51 00:12:41 0.225
field14880 60 00:02:51 00:05:43 0.499
field14881 60 00:02:51 00:06:03 0.472
field14882 60 00:02:51 00:05:43 0.499
field14883 60 00:02:51 00:06:20 0.451
field14884 60 00:02:51 00:06:39 0.429
field14885 60 00:02:51 00:06:20 0.451
field14886 60 00:02:51 00:06:34 0.435
field14887 60 00:02:51 00:05:40 0.503
field14888 60 00:02:51 00:06:40 0.428
field14889 60 00:02:51 00:07:18 0.392
field15196 60 00:02:51 00:06:22 0.448
field15197 60 00:02:51 00:06:22 0.448
field15198 60 00:02:51 00:06:17 0.455
field15199 60 00:02:51 00:06:17 0.455
field15200 60 00:02:51 00:06:06 0.469
field15201 60 00:02:51 00:06:25 0.445
field15202 60 00:02:51 00:06:01 0.475
field15203 60 00:02:51 00:06:30 0.439
field15204 60 00:02:51 00:06:54 0.414
field15205 60 00:02:51 00:10:09 0.282
field7988 60 00:02:51 00:06:00 0.476
field7989 60 00:02:51 00:05:43 0.499
field7990 60 00:02:51 00:05:40 0.503
field7991 60 00:02:51 00:06:00 0.476
field7992 60 00:02:51 00:07:44 0.370
field7993 60 00:02:51 00:06:00 0.476
field7994 60 00:02:51 00:06:03 0.472
field7995 60 00:02:51 00:05:43 0.499
field7996 60 00:02:51 00:12:08 0.235
field7997 60 00:02:51 00:07:40 0.373
field7715 60 00:02:51 00:06:00 0.476
field7716 60 00:02:51 00:07:07 0.401
field7717 60 00:02:51 00:06:17 0.455
field7718 60 00:02:51 00:06:14 0.458
field7719 60 00:02:51 00:06:00 0.476
field7720 60 00:02:51 00:06:03 0.472
field7721 60 00:02:51 00:05:57 0.480
field7722 60 00:02:51 00:07:02 0.406
field7723 60 00:02:51 00:06:14 0.458
field7724 60 00:02:51 00:05:43 0.499
field7725 60 00:02:51 00:06:36 0.433
GB83_test OH 40 00:01:54 00:18:58 0.101
GB83_dither OH 24 00:01:08 00:02:21 0.484
GB100_dither OH 24 00:01:08 00:02:56 0.389
GB117_dither OH 24 00:01:08 00:02:55 0.391
GB82_dither OH 24 00:01:08 00:02:29 0.459
GB99_dither OH 24 00:01:08 00:02:19 0.490
GB116_dither OH 24 00:01:08 00:02:35 0.442
GB81_dither OH 24 00:01:08 00:02:24 0.474
GB98_dither OH 24 00:01:08 00:02:35 0.440
GB115_dither OH 24 00:01:08 00:03:43 0.307
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:30 0.456
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:16 0.503
GB113_dither OH 24 00:01:08 00:02:24 0.474
GB78_dither OH 24 00:01:08 00:02:35 0.440
GB95_dither OH 24 00:01:08 00:02:44 0.418
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB111_dither OH 24 00:01:08 00:06:56 0.165
GB94_dither OH 24 00:01:08 00:02:19 0.493
GB77_dither OH 24 00:01:08 00:02:16 0.503
GB76_dither OH 24 00:01:08 00:02:35 0.440
GB93_dither OH 24 00:01:08 00:02:35 0.440
GB110_dither OH 24 00:01:08 00:02:47 0.411
GCsky 24 00:01:08 00:02:35 0.443










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 67:30:52 172:50:25 0.391

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 1796:08:47 935:39:19 860:29:28 240:56:15 206:31:04 206:31:04 206:31:04 19:05:38
Observed 123:25:55
(6.87%)		 16:25:50
(1.76%)		 107:00:05
(12.43%)		 29:25:11
(12.21%)		 24:51:22
(12.04%)		 30:23:41
(14.72%)		 22:19:49
(10.81%)		 19:05:38
(N/A)
Remaining 1672:42:51
(93.13%)		 919:13:28
(98.24%)		 753:29:22
(87.57%)		 211:31:03
(87.79%)		 181:39:41
(87.96%)		 176:07:22
(85.28%)		 184:11:14
(89.19%)		 00:00:00
(N/A)











Camera status (2026/02/19)



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