PRIME Observation Log 2026/03/12

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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: 2026/03/12
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.55243 +- 0.06225 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:20:28
Morning 06:12:39
Science Observation
(Sun altitude < -10°)
Start 19:42:00
End 05:51:05
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:15:45
End 05:51:05


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 03:54:30 10:09:04 0.385
GB Time 03:54:30 04:35:20 0.852
Non-GB Time 00:00:00 05:33:44 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 2128 01:41:26 03:54:30 0.433
CALIB 240 00:11:26 00:20:30 0.558


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 2056 01:38:00 03:46:56 0.432
SKY 72 00:03:25 00:07:33 0.454
TWILIGHT 240 00:11:26 00:20:30 0.558


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_test OH 16 00:00:45 00:09:57 0.077
GCsky 72 00:03:25 00:07:33 0.454
GB76_dither OH 216 00:10:17 00:22:16 0.462
GB77_dither OH 216 00:10:17 00:21:56 0.469
GB78_dither OH 216 00:10:17 00:21:34 0.477
GB94_dither OH 216 00:10:17 00:25:30 0.404
GB111_dither OH 192 00:09:09 00:20:02 0.457
GB110_dither OH 192 00:09:09 00:20:04 0.456
GB109_dither OH 96 00:04:34 00:09:33 0.478
GB108_dither OH 24 00:01:08 00:02:38 0.432
GB91_dither OH 24 00:01:08 00:02:16 0.503
GB74_dither OH 24 00:01:08 00:02:35 0.440
GB92_dither OH 48 00:02:17 00:05:28 0.418
GB93_dither OH 48 00:02:17 00:04:35 0.498
GB75_dither OH 96 00:04:34 00:10:44 0.426
GB112_dither OH 96 00:04:34 00:09:25 0.486
GB79_dither OH 96 00:04:34 00:13:56 0.328
GB60_dither OH 48 00:02:17 00:04:55 0.465
GB95_dither OH 48 00:02:17 00:04:38 0.493
GB113_dither OH 48 00:02:17 00:04:41 0.488
GB114_dither OH 24 00:01:08 00:02:33 0.448
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:35 0.440
GB80_dither OH 24 00:01:08 00:02:36 0.438
FLAT OJ 240 00:11:26 00:20:30 0.558










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 56:53:53 119:29:24 0.476

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 1781:56:28 944:17:15 837:39:12 234:32:34 201:02:12 201:02:12 201:02:12 24:34:19
Observed 212:06:16
(11.90%)		 64:54:33
(6.87%)		 147:11:42
(17.57%)		 54:20:24
(23.17%)		 29:39:44
(14.75%)		 36:03:22
(17.94%)		 27:08:11
(13.50%)		 24:34:19
(N/A)
Remaining 1569:50:11
(88.10%)		 879:22:42
(93.13%)		 690:27:29
(82.43%)		 180:12:10
(76.83%)		 171:22:28
(85.25%)		 164:58:50
(82.06%)		 173:54:00
(86.50%)		 00:00:00
(N/A)











Camera status (2026/03/12)



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