PRIME Observation Log 2026/01/07

Return to index
Previous day Next day

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: 2026/01/07
Local observer:
Remote observer: DSuzuki
Weather: clear
Comment:
Detector Temperature: 119.49990 +- 0.00259 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:13:06
Morning 05:13:27
Science Observation
(Sun altitude < -10°)
Start 20:38:26
End 04:48:08
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 06:40:20 08:09:42 0.818
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:40:20 08:09:42 0.818


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 368 00:17:32 00:36:05 0.486
OU 998 00:47:34 02:11:15 0.362
SAAO 890 00:42:25 01:29:41 0.473
NASA 890 00:42:25 01:29:41 0.473
ABC 890 00:42:25 01:29:41 0.473


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 368 00:17:32 00:36:05 0.486
offset_all_sky_grid 2968 02:21:28 05:29:14 0.430
all_sky_grid 700 00:33:22 01:11:06 0.469


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 248 00:11:49 00:25:40 0.460
offset_field13570_test 16 00:00:45 00:03:03 0.250
offset_field13570 40 00:01:54 00:03:52 0.491
offset_field13571 40 00:01:54 00:03:52 0.491
offset_field13572 40 00:01:54 00:03:50 0.497
offset_field13573 40 00:01:54 00:03:47 0.503
offset_field13574 40 00:01:54 00:03:52 0.491
offset_field13575 40 00:01:54 00:03:52 0.491
offset_field13576 40 00:01:54 00:03:52 0.491
offset_field13577 40 00:01:54 00:05:02 0.378
offset_field13577_test 40 00:01:54 00:19:59 0.095
offset_field13577_test2 68 00:03:14 00:21:34 0.150
offset_field13578 40 00:01:54 00:05:50 0.326
offset_field3442 40 00:01:54 00:03:52 0.491
offset_field3443 40 00:01:54 00:03:52 0.491
offset_field3643 40 00:01:54 00:04:06 0.463
offset_field5404 40 00:01:54 00:03:52 0.491
offset_field5405 40 00:01:54 00:04:46 0.400
offset_field10846 40 00:01:54 00:03:50 0.497
offset_field10847 40 00:01:54 00:03:58 0.480
offset_field12367 40 00:01:54 00:03:58 0.480
offset_field12368 40 00:01:54 00:03:52 0.491
offset_field12369 40 00:01:54 00:03:58 0.480
offset_field12370 40 00:01:54 00:03:52 0.491
offset_field12371 40 00:01:54 00:03:50 0.497
offset_field12372 40 00:01:54 00:03:52 0.491
offset_field12373 40 00:01:54 00:03:50 0.497
offset_field12374 40 00:01:54 00:03:50 0.497
offset_field12375 40 00:01:54 00:03:52 0.491
offset_field12376 40 00:01:54 00:03:55 0.485
offset_field12377 40 00:01:54 00:03:47 0.503
offset_field12378 40 00:01:54 00:03:47 0.503
offset_field12379 40 00:01:54 00:03:50 0.497
offset_field12380 40 00:01:54 00:03:50 0.497
offset_field12381 40 00:01:54 00:03:52 0.491
offset_field12382 40 00:01:54 00:04:05 0.465
offset_field12087_test 4 00:00:11 00:01:55 0.099
offset_field12087 40 00:01:54 00:05:11 0.367
offset_field12088 40 00:01:54 00:03:52 0.491
offset_field12089 40 00:01:54 00:03:52 0.491
offset_field12090 40 00:01:54 00:03:52 0.491
offset_field12091 40 00:01:54 00:03:50 0.497
offset_field12092 40 00:01:54 00:03:58 0.480
offset_field12093 40 00:01:54 00:03:52 0.491
offset_field12094 40 00:01:54 00:03:52 0.491
offset_field12095 40 00:01:54 00:03:52 0.491
offset_field12096 40 00:01:54 00:03:52 0.491
offset_field12097 40 00:01:54 00:03:55 0.485
offset_field12098 40 00:01:54 00:03:50 0.497
offset_field12099 40 00:01:54 00:03:55 0.485
offset_field12100 40 00:01:54 00:03:52 0.491
offset_field12101 40 00:01:54 00:03:52 0.491
offset_field12102 40 00:01:54 00:03:50 0.497
offset_field12103 40 00:01:54 00:03:52 0.491
offset_field12104 40 00:01:54 00:03:55 0.485
offset_field12105 40 00:01:54 00:03:50 0.497
offset_field12106 40 00:01:54 00:03:50 0.497
offset_field12107 40 00:01:54 00:03:50 0.497
offset_field12108 40 00:01:54 00:03:52 0.491
offset_field12109 40 00:01:54 00:03:52 0.491
offset_field12110 40 00:01:54 00:04:37 0.412
offset_field12391 40 00:01:54 00:03:47 0.503
offset_field12392 40 00:01:54 00:03:47 0.503
offset_field12393 40 00:01:54 00:04:04 0.469
offset_field12404 40 00:01:54 00:03:50 0.497
offset_field12405 40 00:01:54 00:03:52 0.491
offset_field12406 40 00:01:54 00:03:50 0.497
offset_field12407 40 00:01:54 00:03:52 0.491
offset_field12408 40 00:01:54 00:03:58 0.480
offset_field15227 40 00:01:54 00:04:04 0.469
offset_field11498 40 00:01:54 00:03:58 0.480
offset_field11499 40 00:01:54 00:03:50 0.497
offset_field11500 40 00:01:54 00:03:50 0.497
offset_field11501 40 00:01:54 00:03:52 0.491
offset_field11502 40 00:01:54 00:03:52 0.491
offset_field11503 40 00:01:54 00:04:37 0.412
field15267 40 00:01:54 00:03:47 0.503
field15268 40 00:01:54 00:03:50 0.497
field15269 40 00:01:54 00:03:50 0.497
field15270 40 00:01:54 00:03:50 0.497
field15271 40 00:01:54 00:03:50 0.497
field15272 40 00:01:54 00:03:50 0.497
field15273 40 00:01:54 00:03:52 0.491
field15274 40 00:01:54 00:03:52 0.491
field15275 40 00:01:54 00:03:52 0.491
field15276 36 00:01:42 00:03:50 0.448
field15277 40 00:01:54 00:03:52 0.491
field15278 40 00:01:54 00:03:52 0.491
field15279 40 00:01:54 00:03:47 0.503
field15280 40 00:01:54 00:03:50 0.497
field15281 40 00:01:54 00:03:47 0.503
field15282 40 00:01:54 00:03:50 0.497
field15283 40 00:01:54 00:03:50 0.497
field15284 24 00:01:08 00:05:49 0.196
FLAT ZO 120 00:05:43 00:10:24 0.549










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 20:09:17 56:49:12 0.355

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 1880:38:42 945:31:27 935:07:14 261:50:01 224:25:44 224:25:44 224:25:44 01:22:56
Observed 20:09:16
(1.07%)		 00:00:00
(0.00%)		 20:09:16
(2.16%)		 04:51:55
(1.86%)		 05:33:29
(2.48%)		 04:51:55
(2.17%)		 04:51:55
(2.17%)		 01:22:56
(N/A)
Remaining 1860:29:25
(98.93%)		 945:31:27
(100.00%)		 914:57:57
(97.84%)		 256:58:06
(98.14%)		 218:52:14
(97.52%)		 219:33:48
(97.83%)		 219:33:48
(97.83%)		 00:00:00
(N/A)











Camera status (2026/01/07)



Return to index
Previous day Next day