PRIME Observation Log 2026/01/08

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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: 2026/01/08
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 119.50004 +- 0.00168 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:13:04
Morning 05:14:21
Science Observation
(Sun altitude < -10°)
Start 20:38:20
End 04:49:04
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 07:16:20 08:10:43 0.889
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 07:16:20 08:10:43 0.889


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 52 00:02:28 00:28:23 0.087
SAAO 1047 00:49:54 01:49:05 0.458
OU 1047 00:49:54 01:49:05 0.458
NASA 1047 00:49:54 01:49:05 0.458
ABC 1047 00:49:54 01:49:05 0.458


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 52 00:02:28 00:28:23 0.087
offset_all_sky_grid 4168 03:18:40 07:14:05 0.458
all_sky_grid 20 00:00:57 00:02:15 0.423


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OH 32 00:01:31 00:19:01 0.080
FLAT OH 20 00:00:57 00:09:22 0.102
offset_field13264_test 8 00:00:22 00:04:43 0.081
offset_field13264 40 00:01:54 00:04:01 0.474
offset_field13265 40 00:01:54 00:04:10 0.457
offset_field13266 40 00:01:54 00:05:41 0.335
offset_field3248 40 00:01:54 00:04:40 0.408
offset_field3059 40 00:01:54 00:04:23 0.434
offset_field3249 40 00:01:54 00:04:23 0.434
offset_field3444 40 00:01:54 00:04:27 0.428
offset_field3445 40 00:01:54 00:04:20 0.440
offset_field3644 40 00:01:54 00:03:47 0.503
offset_field3645 40 00:01:54 00:04:06 0.463
offset_field3646 40 00:01:54 00:04:06 0.463
offset_field3647 40 00:01:54 00:05:36 0.340
offset_field3850 40 00:01:54 00:04:06 0.463
offset_field3851 40 00:01:54 00:04:20 0.438
offset_field3852 40 00:01:54 00:03:47 0.503
offset_field3853 40 00:01:54 00:03:50 0.497
offset_field3854 40 00:01:54 00:04:23 0.434
offset_field3855 40 00:01:54 00:03:58 0.480
offset_field3856 40 00:01:54 00:04:37 0.412
offset_field4065 40 00:01:54 00:03:50 0.496
offset_field4066 40 00:01:54 00:05:02 0.378
offset_field5406 40 00:01:54 00:04:10 0.457
offset_field5407 40 00:01:54 00:04:17 0.444
offset_field5408 40 00:01:54 00:03:47 0.503
offset_field5409 40 00:01:54 00:04:06 0.463
offset_field5410 40 00:01:54 00:04:23 0.434
offset_field5411 40 00:01:54 00:04:20 0.438
offset_field5412 40 00:01:54 00:04:20 0.438
offset_field5413 40 00:01:54 00:04:23 0.434
offset_field5414 40 00:01:54 00:03:50 0.497
offset_field5415 40 00:01:54 00:04:40 0.408
offset_field5416 40 00:01:54 00:03:53 0.490
offset_field5417 40 00:01:54 00:04:03 0.470
offset_field5418 40 00:01:54 00:04:23 0.434
offset_field5419 40 00:01:54 00:03:47 0.503
offset_field5420 40 00:01:54 00:03:50 0.496
offset_field5421 40 00:01:54 00:04:03 0.470
offset_field5422 40 00:01:54 00:04:37 0.412
offset_field5423 40 00:01:54 00:04:06 0.463
offset_field5424 40 00:01:54 00:04:20 0.438
offset_field5425 40 00:01:54 00:03:47 0.503
offset_field5426 40 00:01:54 00:04:40 0.408
offset_field5427 40 00:01:54 00:04:04 0.469
offset_field5428 40 00:01:54 00:04:20 0.438
offset_field5429 40 00:01:54 00:03:50 0.497
offset_field5430 40 00:01:54 00:04:23 0.434
offset_field5431 40 00:01:54 00:03:47 0.503
offset_field5432 40 00:01:54 00:04:06 0.463
offset_field5433 40 00:01:54 00:04:06 0.463
offset_field5434 40 00:01:54 00:04:04 0.469
offset_field5435 40 00:01:54 00:03:47 0.503
offset_field5436 40 00:01:54 00:04:04 0.469
offset_field5437 40 00:01:54 00:04:40 0.408
offset_field5438 40 00:01:54 00:04:23 0.434
offset_field5439 40 00:01:54 00:04:04 0.469
offset_field5440 40 00:01:54 00:04:06 0.463
offset_field5441 40 00:01:54 00:04:23 0.434
offset_field5442 40 00:01:54 00:03:50 0.497
offset_field5443 40 00:01:54 00:04:06 0.463
offset_field5444 40 00:01:54 00:04:12 0.453
offset_field5663 40 00:01:54 00:04:04 0.469
offset_field5664 40 00:01:54 00:04:06 0.463
offset_field5665 40 00:01:54 00:04:09 0.458
offset_field5666 40 00:01:54 00:04:26 0.429
offset_field5667 40 00:01:54 00:04:26 0.429
offset_field5668 40 00:01:54 00:03:47 0.503
offset_field5669 40 00:01:54 00:03:50 0.497
offset_field5670 40 00:01:54 00:03:52 0.491
offset_field5671 40 00:01:54 00:03:52 0.491
offset_field5672 40 00:01:54 00:03:50 0.497
offset_field5673 40 00:01:54 00:03:50 0.497
offset_field5674 40 00:01:54 00:03:50 0.497
offset_field5675 40 00:01:54 00:03:50 0.497
offset_field5676 40 00:01:54 00:03:50 0.497
offset_field5677 40 00:01:54 00:03:47 0.503
offset_field5678 40 00:01:54 00:03:50 0.497
offset_field5679 40 00:01:54 00:03:50 0.497
offset_field5680 40 00:01:54 00:03:50 0.497
offset_field5681 40 00:01:54 00:03:52 0.491
offset_field5682 40 00:01:54 00:04:08 0.460
offset_field5683 40 00:01:54 00:06:27 0.296
offset_field5684 40 00:01:54 00:03:55 0.485
offset_field5685 40 00:01:54 00:03:50 0.497
offset_field5686 40 00:01:54 00:03:52 0.491
offset_field5687 40 00:01:54 00:03:50 0.497
offset_field5688 40 00:01:54 00:03:52 0.491
offset_field5689 40 00:01:54 00:03:52 0.491
offset_field5690 40 00:01:54 00:03:52 0.491
offset_field5691 40 00:01:54 00:03:50 0.497
offset_field5692 40 00:01:54 00:03:50 0.497
offset_field5693 40 00:01:54 00:03:58 0.480
offset_field5694 40 00:01:54 00:03:58 0.480
offset_field5695 40 00:01:54 00:03:47 0.503
offset_field5696 40 00:01:54 00:03:47 0.503
offset_field5697 40 00:01:54 00:03:50 0.497
offset_field5698 40 00:01:54 00:03:50 0.497
offset_field5699 40 00:01:54 00:03:52 0.491
offset_field5700 40 00:01:54 00:03:52 0.491
offset_field5701 40 00:01:54 00:03:50 0.497
offset_field5702 40 00:01:54 00:03:50 0.497
offset_field5703 40 00:01:54 00:03:52 0.491
offset_field5704 40 00:01:54 00:03:52 0.491
offset_field5705 40 00:01:54 00:03:52 0.491
offset_field5706 40 00:01:54 00:04:40 0.408
field14014 20 00:00:57 00:02:15 0.423










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 27:25:38 64:59:56 0.422

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 1883:49:41 945:31:27 938:18:13 262:43:30 225:11:34 225:11:34 225:11:34 01:51:20
Observed 27:25:37
(1.46%)		 00:00:00
(0.00%)		 27:25:37
(2.92%)		 06:41:00
(2.54%)		 07:22:34
(3.28%)		 06:41:00
(2.97%)		 06:41:00
(2.97%)		 01:51:20
(N/A)
Remaining 1856:24:03
(98.54%)		 945:31:27
(100.00%)		 910:52:35
(97.08%)		 256:02:29
(97.46%)		 217:48:59
(96.72%)		 218:30:33
(97.03%)		 218:30:33
(97.03%)		 00:00:00
(N/A)











Camera status (2026/01/08)



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