PRIME Observation Log 2026/03/03

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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: 2026/03/03
Local observer:
Remote observer: Takuto
Weather: cloudy, clear
Comment:
Detector Temperature: 111.99986 +- 0.00207 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:31:53
Morning 06:05:38
Science Observation
(Sun altitude < -10°)
Start 19:53:44
End 05:43:46
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 01:51:08
End 05:43:46


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:26:53 09:50:02 0.249
GB Time 02:26:53 03:52:38 0.631
Non-GB Time 00:00:00 05:57:23 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 1316 01:02:43 02:26:53 0.427
CALIB 84 00:04:00 00:10:58 0.365


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 1268 01:00:26 02:18:44 0.436
SKY 48 00:02:17 00:08:09 0.281
TWILIGHT 84 00:04:00 00:10:58 0.365


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB76_dither_test OH 20 00:00:57 00:07:21 0.130
GB76_dither OH 120 00:05:43 00:12:29 0.458
GB77_dither OH 120 00:05:43 00:12:17 0.465
GB78_dither OH 120 00:05:43 00:12:34 0.455
GB94_dither OH 120 00:05:43 00:11:46 0.486
GB111_dither OH 120 00:05:43 00:12:26 0.460
GB110_dither OH 120 00:05:43 00:12:31 0.457
GB109_dither OH 72 00:03:25 00:07:28 0.459
GB92_dither OH 24 00:01:08 00:02:33 0.448
GB93_dither OH 24 00:01:08 00:02:16 0.503
GB75_dither OH 72 00:03:25 00:08:01 0.428
GB112_dither OH 48 00:02:17 00:04:57 0.461
GB79_dither OH 48 00:02:17 00:05:17 0.432
GB60_dither OH 24 00:01:08 00:02:35 0.440
GB108_dither OH 24 00:01:08 00:02:41 0.425
GB91_dither OH 24 00:01:08 00:02:30 0.455
GB74_dither OH 24 00:01:08 00:02:43 0.419
GCsky 48 00:02:17 00:08:09 0.281
GB95_dither OH 24 00:01:08 00:02:24 0.474
GB113_dither OH 24 00:01:08 00:02:33 0.448
GB96_dither OH 24 00:01:08 00:02:19 0.493
GB80_dither OH 24 00:01:08 00:02:27 0.466
GB97_dither OH 24 00:01:08 00:02:39 0.431
GB114_dither OH 24 00:01:08 00:03:45 0.304
FLAT_test ZO 4 00:00:11 00:03:50 0.050
FLAT ZO 80 00:03:48 00:07:08 0.534










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 15:22:16 29:23:42 0.523

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 1785:30:12 934:45:28 850:44:43 238:12:31 204:10:44 204:10:44 204:10:44 22:05:34
Observed 170:37:09
(9.56%)		 36:08:55
(3.87%)		 134:28:13
(15.81%)		 41:44:41
(17.52%)		 29:37:08
(14.51%)		 36:00:46
(17.64%)		 27:05:36
(13.27%)		 22:05:34
(N/A)
Remaining 1614:53:02
(90.44%)		 898:36:32
(96.13%)		 716:16:30
(84.19%)		 196:27:49
(82.48%)		 174:33:35
(85.49%)		 168:09:57
(82.36%)		 177:05:07
(86.73%)		 00:00:00
(N/A)











Camera status (2026/03/03)



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