PRIME Observation Log 2026/03/08

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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: 2026/03/08
Local observer:
Remote observer: Takuto
Weather: clear
Comment:
Detector Temperature: 111.99998 +- 0.00119 K
ImageAcquisitionErrors occurred 1 times @
2026-03-08 23:32:08 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:25:36
Morning 06:09:35
Science Observation
(Sun altitude < -10°)
Start 19:47:16
End 05:47:55
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:31:28
End 05:47:55


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:05:12 10:00:38 0.908
GB Time 04:05:31 04:16:26 0.957
Non-GB Time 04:59:40 05:44:12 0.871


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 332 00:15:49 00:42:14 0.375
SAAO 4194 03:19:54 04:55:04 0.677
GB 2032 01:36:51 04:05:31 0.394
OU 4 00:00:11 00:01:31 0.125
NASA 4 00:00:11 00:01:31 0.125
ABC 4 00:00:11 00:01:31 0.125


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 332 00:15:49 00:42:14 0.375
all_sky_grid 4206 03:20:29 04:59:40 0.669
Bulge 1936 01:32:16 03:52:45 0.396
SKY 96 00:04:34 00:12:46 0.358


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
test DY 4 00:00:11 00:09:18 0.020
FLAT_test OH 8 00:00:22 00:04:01 0.095
FLAT OH 320 00:15:15 00:28:54 0.528
field10217_test 24 00:01:08 00:06:37 0.173
field10217 684 00:32:36 00:41:19 0.789
field7406_test 16 00:00:45 00:04:16 0.179
field7406 684 00:32:36 00:44:41 0.730
field6387 703 00:33:30 00:46:09 0.726
field6387_test 4 00:00:11 00:02:40 0.071
field7209_test 48 00:02:17 00:15:48 0.145
field7209 684 00:32:36 00:39:43 0.821
field8311 798 00:38:02 00:48:24 0.786
field8311_test 32 00:01:31 00:11:45 0.130
field7490 513 00:24:27 00:32:07 0.761
field2944_test 16 00:00:45 00:06:07 0.125
GB114_dither_test OY 64 00:03:03 00:39:36 0.077
GB114_dither OY 48 00:02:17 00:04:35 0.498
GB113_dither OY 48 00:02:17 00:04:38 0.493
GB112_dither OY 48 00:02:17 00:04:38 0.493
GB111_dither OY 48 00:02:17 00:04:38 0.493
GB110_dither OY 72 00:03:25 00:12:22 0.277
GB109_dither OY 48 00:02:17 00:04:38 0.493
GB108_dither OY 48 00:02:17 00:04:43 0.484
GCsky 96 00:04:34 00:12:46 0.358
GB76_dither OH 144 00:06:51 00:14:17 0.480
GB77_dither OH 144 00:06:51 00:14:03 0.488
GB78_dither OH 144 00:06:51 00:13:54 0.493
GB94_dither OH 144 00:06:51 00:14:06 0.487
GB111_dither OH 144 00:06:51 00:14:06 0.487
GB110_dither OH 144 00:06:51 00:14:03 0.488
GB109_dither OH 72 00:03:25 00:07:03 0.487
GB92_dither OH 48 00:02:17 00:04:38 0.493
GB93_dither OH 48 00:02:17 00:04:43 0.484
GB75_dither OH 72 00:03:25 00:07:56 0.432
GB112_dither OH 72 00:03:25 00:07:05 0.483
GB79_dither OH 72 00:03:25 00:07:05 0.484
GB60_dither OH 48 00:02:17 00:07:32 0.304
GB108_dither OH 24 00:01:08 00:02:21 0.483
GB91_dither OH 24 00:01:08 00:02:21 0.484
GB74_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB113_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:03:32 0.324










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 99:19:50 259:06:19 0.383
Mar 40:22:23 79:05:44 0.510

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 1785:39:19 938:43:41 846:55:37 237:08:22 203:15:45 203:15:45 203:15:45 23:02:58
Observed 195:37:17
(10.96%)		 50:24:28
(5.37%)		 145:12:48
(17.15%)		 52:24:41
(22.10%)		 29:38:40
(14.58%)		 36:02:18
(17.73%)		 27:07:08
(13.34%)		 23:02:58
(N/A)
Remaining 1590:02:02
(89.04%)		 888:19:12
(94.63%)		 701:42:49
(82.85%)		 184:43:41
(77.90%)		 173:37:04
(85.42%)		 167:13:26
(82.27%)		 176:08:36
(86.66%)		 00:00:00
(N/A)











Camera status (2026/03/08)



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