PRIME Observation Log 2026/03/04

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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: 2026/03/04
Local observer:
Remote observer: Ryunosuke
Weather: clearp
Comment:
Detector Temperature: 111.99983 +- 0.00140 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:30:38
Morning 06:06:26
Science Observation
(Sun altitude < -10°)
Start 19:52:27
End 05:44:37
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:47:12
End 05:44:37


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 04:14:00 09:52:09 0.429
GB Time 04:14:00 03:57:24 1.070
Non-GB Time 00:00:00 05:54:44 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 2456 01:57:04 04:14:00 0.461
CALIB 176 00:08:23 00:15:09 0.554


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 2364 01:52:41 04:03:08 0.463
SKY 92 00:04:23 00:10:51 0.404
TWILIGHT 176 00:08:23 00:15:09 0.554


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB83_test OJ 4 00:00:11 00:02:06 0.090
GB117_test OJ 12 00:00:34 00:03:50 0.149
GB117_dither ZJ 16 00:00:45 00:02:21 0.324
GB117_dither OJ 48 00:02:17 00:04:32 0.503
GB100_dither OJ 48 00:02:17 00:05:00 0.456
GB83_dither OJ 48 00:02:17 00:04:35 0.498
GB82_dither OJ 48 00:02:17 00:04:32 0.503
GB99_dither OJ 48 00:02:17 00:04:38 0.493
GB116_dither OJ 48 00:02:17 00:04:35 0.498
GB115_dither OJ 48 00:02:17 00:04:32 0.503
GB98_dither OJ 48 00:02:17 00:04:32 0.503
GB81_dither OJ 48 00:02:17 00:04:35 0.498
GB80_dither OJ 48 00:02:17 00:04:38 0.493
GB79_dither OJ 48 00:02:17 00:04:32 0.503
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:32 0.503
GB74_dither OJ 48 00:02:17 00:04:43 0.484
GCsky 92 00:04:23 00:10:51 0.404
GB76_dither_test OH 4 00:00:11 00:02:23 0.080
GB76_dither OH 144 00:06:51 00:14:00 0.490
GB77_dither OH 144 00:06:51 00:14:00 0.490
GB78_dither OH 144 00:06:51 00:13:57 0.492
GB94_dither OH 144 00:06:51 00:14:00 0.490
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 00:08:52 0.387
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 00:07:17 0.471
GB112_dither OH 72 00:03:25 00:07:00 0.490
GB79_dither OH 72 00:03:25 00:07:05 0.484
GB60_dither OH 48 00:02:17 00:05:03 0.452
GB108_dither OH 24 00:01:08 00:02:16 0.503
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:16 0.503
GB95_dither OH 48 00:02:17 00:04:43 0.484
GB113_dither OH 48 00:02:17 00:08:44 0.262
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB96_dither OH 24 00:01:08 00:02:21 0.484
FLAT OY 176 00:08:23 00:15:09 0.554










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 19:36:16 39:15:51 0.499

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 1784:48:07 937:00:46 847:47:21 237:22:51 203:28:09 203:28:09 203:28:09 22:20:43
Observed 174:51:09
(9.80%)		 40:22:56
(4.31%)		 134:28:13
(15.86%)		 41:44:41
(17.59%)		 29:37:08
(14.56%)		 36:00:46
(17.70%)		 27:05:36
(13.32%)		 22:20:43
(N/A)
Remaining 1609:56:58
(90.20%)		 896:37:49
(95.69%)		 713:19:08
(84.14%)		 195:38:10
(82.41%)		 173:51:01
(85.44%)		 167:27:23
(82.30%)		 176:22:33
(86.68%)		 00:00:00
(N/A)











Camera status (2026/03/04)



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