PRIME Observation Log 2026/03/16

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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: 2026/03/16
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.50000 +- 0.00000 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:15:17
Morning 06:15:36
Science Observation
(Sun altitude < -10°)
Start 19:36:44
End 05:54:09
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:00:01
End 05:54:09


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 01:50:22 10:17:25 0.179
GB Time 01:50:22 04:54:07 0.375
Non-GB Time 00:00:00 05:23:17 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 1040 00:49:34 01:50:22 0.449


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 992 00:47:17 01:45:21 0.449
SKY 48 00:02:17 00:05:00 0.456


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_test OH 24 00:01:08 00:11:00 0.104
GB76_dither OH 96 00:04:34 00:09:10 0.498
GB77_dither OH 96 00:04:34 00:09:27 0.484
GB78_dither OH 96 00:04:34 00:09:16 0.493
GB94_dither OH 96 00:04:34 00:09:10 0.498
GB111_dither OH 96 00:04:34 00:09:19 0.491
GB110_dither OH 96 00:04:34 00:09:22 0.488
GB109_dither OH 48 00:02:17 00:04:43 0.484
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:16 0.503
GB75_dither OH 48 00:02:17 00:04:46 0.479
GCsky 48 00:02:17 00:05:00 0.456
GB112_dither OH 48 00:02:17 00:04:43 0.484
GB79_dither OH 48 00:02:17 00:04:41 0.488
GB60_dither OH 24 00:01:08 00:02:19 0.493
GB95_dither OH 24 00:01:08 00:02:16 0.503
GB113_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 8 00:00:22 00:01:04 0.357










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 58:44:15 160:26:34 0.366

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 1763:18:15 936:33:27 826:44:47 231:29:20 198:25:08 198:25:08 198:25:08 24:34:19
Observed 213:56:38
(12.13%)		 66:44:55
(7.13%)		 147:11:42
(17.80%)		 54:20:24
(23.47%)		 29:39:44
(14.95%)		 36:03:22
(18.17%)		 27:08:11
(13.68%)		 24:34:19
(N/A)
Remaining 1549:21:36
(87.87%)		 869:48:32
(92.87%)		 679:33:04
(82.20%)		 177:08:56
(76.53%)		 168:45:24
(85.05%)		 162:21:46
(81.83%)		 171:16:57
(86.32%)		 00:00:00
(N/A)











Camera status (2026/03/16)



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