PRIME Observation Log 2026/03/11

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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: 2026/03/11
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.74481 +- 0.04103 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:21:45
Morning 06:11:53
Science Observation
(Sun altitude < -10°)
Start 19:43:19
End 05:50:18
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:19:41
End 05:50:18


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:52:56 10:06:58 0.285
GB Time 02:46:11 04:30:37 0.614
Non-GB Time 00:06:45 05:36:21 0.020


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.)
GB 1368 01:05:12 02:46:11 0.392
SKY 24 00:01:08 00:02:30 0.457
CALIB 204 00:09:43 00:17:37 0.552
SAAO 2 00:00:05 00:01:03 0.090
OU 2 00:00:05 00:01:03 0.090
NASA 2 00:00:05 00:01:03 0.090
ABC 2 00:00:05 00:01:03 0.090


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 8 00:00:22 00:04:14 0.090
Bulge 1344 01:04:03 02:39:11 0.402
GB 24 00:01:08 00:02:30 0.457
SKY 24 00:01:08 00:06:59 0.164
TWILIGHT 204 00:09:43 00:17:37 0.552


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field2720_test 8 00:00:22 00:04:14 0.090
GB80_dither_test OY 20 00:00:57 00:11:01 0.086
GB80_dither OY 48 00:02:17 00:04:46 0.479
GCsky 48 00:02:17 00:09:29 0.241
GB113_dither OY 48 00:02:17 00:04:38 0.493
GB96_dither OY 48 00:02:17 00:04:38 0.493
GB97_dither OY 48 00:02:17 00:04:38 0.493
GB114_dither OY 48 00:02:17 00:04:38 0.493
GB79_dither OY 48 00:02:17 00:04:35 0.498
GB78_dither OY 48 00:02:17 00:04:32 0.503
GB95_dither OY 48 00:02:17 00:04:35 0.498
GB112_dither OY 48 00:02:17 00:04:35 0.498
GB111_dither OY 48 00:02:17 00:04:35 0.498
GB94_dither OY 48 00:02:17 00:04:35 0.498
GB77_dither OY 48 00:02:17 00:04:38 0.493
GB60_dither OY 24 00:01:08 00:02:19 0.493
GB76_dither OY 24 00:01:08 00:03:20 0.342
GB93_dither OY 48 00:02:17 00:16:19 0.140
GB80_test OH 4 00:00:11 00:02:37 0.073
GB76_dither OH 96 00:04:34 00:09:58 0.459
GB77_dither OH 96 00:04:34 00:09:53 0.463
GB78_dither OH 96 00:04:34 00:09:19 0.491
GB94_dither OH 96 00:04:34 00:09:33 0.478
GB111_dither OH 96 00:04:34 00:09:52 0.463
GB110_dither OH 48 00:02:17 00:04:41 0.488
GB75_dither OH 24 00:01:08 00:02:19 0.493
GB95_dither OH 24 00:01:08 00:02:21 0.484
GB112_dither OH 24 00:01:08 00:02:21 0.484
GB113_dither OH 24 00:01:08 00:02:21 0.484
GB79_dither OH 24 00:01:08 00:05:21 0.214
FLAT OY 204 00:09:43 00:17:37 0.552










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 52:59:23 109:20:20 0.485

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 1783:06:29 942:40:25 840:26:04 235:19:18 201:42:15 201:42:15 201:42:15 24:13:48
Observed 208:11:45
(11.68%)		 61:00:02
(6.47%)		 147:11:42
(17.51%)		 54:20:24
(23.09%)		 29:39:44
(14.71%)		 36:03:22
(17.88%)		 27:08:11
(13.45%)		 24:13:48
(N/A)
Remaining 1574:54:44
(88.32%)		 881:40:22
(93.53%)		 693:14:21
(82.49%)		 180:58:53
(76.91%)		 172:02:31
(85.29%)		 165:38:53
(82.12%)		 174:34:03
(86.55%)		 00:00:00
(N/A)











Camera status (2026/03/11)



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