PRIME Observation Log 2026/01/02

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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: 2026/01/02
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 119.50005 +- 0.00069 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:12:50
Morning 05:09:15
Science Observation
(Sun altitude < -10°)
Start 20:38:22
End 04:43:43
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start --:--:--
End --:--:--


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:47:59 08:05:20 0.593
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 04:47:59 08:05:20 0.593


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.)
SAAO 622 00:29:38 01:11:59 0.412
OU 622 00:29:38 01:11:59 0.412
NASA 622 00:29:38 01:11:59 0.412
ABC 622 00:29:38 01:11:59 0.412


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_all_sky_grid 2488 01:58:35 04:47:59 0.412


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
offset_field14515_test 12 00:00:34 00:07:01 0.081
offset_field14515 40 00:01:54 00:04:29 0.425
offset_field14516 40 00:01:54 00:03:50 0.497
offset_field14517 40 00:01:54 00:04:32 0.420
offset_field14518 40 00:01:54 00:04:35 0.415
offset_field14519 40 00:01:54 00:04:45 0.401
offset_field14520 40 00:01:54 00:07:11 0.265
offset_field15171 40 00:01:54 00:04:26 0.429
offset_field15172 40 00:01:54 00:04:48 0.396
offset_field15173 40 00:01:54 00:04:26 0.429
offset_field15174 40 00:01:54 00:04:06 0.463
offset_field15175 40 00:01:54 00:03:47 0.503
offset_field15176 40 00:01:54 00:03:50 0.497
offset_field15177 40 00:01:54 00:04:32 0.420
offset_field15178 40 00:01:54 00:04:32 0.420
offset_field15179 40 00:01:54 00:04:12 0.453
offset_field15180 40 00:01:54 00:04:12 0.453
offset_field15181 40 00:01:54 00:03:52 0.491
offset_field15182 40 00:01:54 00:04:15 0.448
offset_field15183 40 00:01:54 00:04:09 0.458
offset_field15184 40 00:01:54 00:03:50 0.497
offset_field15185 40 00:01:54 00:04:09 0.458
offset_field15186 40 00:01:54 00:04:09 0.458
offset_field15187 40 00:01:54 00:03:47 0.503
offset_field15188 40 00:01:54 00:03:47 0.503
offset_field15189 40 00:01:54 00:03:47 0.503
offset_field15190 40 00:01:54 00:04:26 0.429
offset_field15191 40 00:01:54 00:04:57 0.385
offset_field15192 40 00:01:54 00:04:06 0.463
offset_field15193 40 00:01:54 00:04:06 0.463
offset_field15194 40 00:01:54 00:04:09 0.458
offset_field15195 40 00:01:54 00:04:26 0.429
offset_field15196 40 00:01:54 00:04:06 0.463
offset_field15197 40 00:01:54 00:05:02 0.378
offset_field15486 40 00:01:54 00:04:09 0.458
offset_field15487 40 00:01:54 00:04:12 0.453
offset_field15488 40 00:01:54 00:03:47 0.503
offset_field15489 40 00:01:54 00:04:29 0.425
offset_field15490 40 00:01:54 00:04:09 0.458
offset_field15491 40 00:01:54 00:04:06 0.463
offset_field15492 40 00:01:54 00:04:26 0.429
offset_field15493 40 00:01:54 00:03:47 0.503
offset_field15494 40 00:01:54 00:04:06 0.463
offset_field15495 40 00:01:54 00:04:29 0.425
offset_field15496 40 00:01:54 00:04:32 0.420
offset_field15497 40 00:01:54 00:03:52 0.491
offset_field15498 40 00:01:54 00:04:29 0.425
offset_field15499 40 00:01:54 00:04:12 0.453
offset_field15500 36 00:01:42 00:04:51 0.353
offset_field15501 40 00:01:54 00:03:55 0.485
offset_field15502 40 00:01:54 00:04:29 0.425
offset_field15503 40 00:01:54 00:04:12 0.453
offset_field15504 40 00:01:54 00:03:50 0.497
offset_field15505 40 00:01:54 00:03:52 0.491
offset_field15506 40 00:01:54 00:03:52 0.491
offset_field15507 40 00:01:54 00:04:18 0.443
offset_field15508 40 00:01:54 00:04:12 0.453
offset_field15509 40 00:01:54 00:04:32 0.420
offset_field15510 40 00:01:54 00:09:12 0.207
offset_field15511 40 00:01:54 00:12:17 0.155
offset_field15512 40 00:01:54 00:06:24 0.297
offset_field15513 40 00:01:54 00:04:25 0.430
offset_field15514 40 00:01:54 00:04:05 0.465










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 04:47:59 16:09:58 0.297

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 1885:37:02 945:31:27 940:05:34 263:13:33 225:37:20 225:37:20 225:37:20 00:00:00
Observed 04:47:59
(0.25%)		 00:00:00
(0.00%)		 04:47:59
(0.51%)		 01:11:59
(0.46%)		 01:11:59
(0.53%)		 01:11:59
(0.53%)		 01:11:59
(0.53%)		 00:00:00
(N/A)
Remaining 1880:49:02
(99.75%)		 945:31:27
(100.00%)		 935:17:34
(99.49%)		 262:01:33
(99.54%)		 224:25:20
(99.47%)		 224:25:20
(99.47%)		 224:25:20
(99.47%)		 00:00:00
(N/A)











Camera status (2026/01/02)



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