PRIME Observation Log 2026/03/01

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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: 2026/03/01
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 112.00000 +- 0.00123 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:34:21
Morning 06:04:00
Science Observation
(Sun altitude < -10°)
Start 19:56:17
End 05:42:03
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:58:59
End 05:42:03


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:17:41 09:45:46 0.337
GB Time 00:00:00 03:43:03 0.000
Non-GB Time 03:17:41 06:02:42 0.545


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 80 00:03:48 00:08:32 0.446
SAAO 2200 01:44:52 02:23:20 0.732
OU 132 00:06:17 00:18:07 0.347
NASA 132 00:06:17 00:18:07 0.347
ABC 132 00:06:17 00:18:07 0.347


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 80 00:03:48 00:08:32 0.446
all_sky_grid 2596 02:03:44 03:17:41 0.626


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
test DH 8 00:00:22 00:02:01 0.189
FLAT OH 72 00:03:25 00:06:31 0.526
field2547_test 28 00:01:20 00:09:14 0.144
field2547 60 00:02:51 00:05:46 0.495
field2548 60 00:02:51 00:05:46 0.495
field2549 80 00:03:48 00:21:07 0.181
field2550 60 00:02:51 00:05:43 0.499
field2551 60 00:02:51 00:05:40 0.503
field2552 60 00:02:51 00:05:46 0.495
field2553 60 00:02:51 00:05:43 0.499
field2554 60 00:02:51 00:07:38 0.374
field1445_test 4 00:00:11 00:01:27 0.131
field5898_test 12 00:00:34 00:03:25 0.167
field5898 684 00:32:36 00:41:05 0.794
field4495 684 00:32:36 00:40:40 0.802
field3651 684 00:32:36 00:38:35 0.845










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 03:17:41 09:45:46 0.337

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 1783:14:36 932:15:41 850:58:54 238:16:29 204:14:08 204:14:08 204:14:08 21:27:24
Observed 158:32:35
(8.89%)		 29:48:54
(3.20%)		 128:43:41
(15.13%)		 36:12:11
(15.19%)		 29:33:08
(14.47%)		 35:56:46
(17.60%)		 27:01:35
(13.23%)		 21:27:24
(N/A)
Remaining 1624:42:00
(91.11%)		 902:26:47
(96.80%)		 722:15:13
(84.87%)		 202:04:18
(84.81%)		 174:41:00
(85.53%)		 168:17:22
(82.40%)		 177:12:32
(86.77%)		 00:00:00
(N/A)











Camera status (2026/03/01)



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