PRIME Observation Log 2025/06/03

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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: 2025/06/03
Local observer: Ryusei
Remote observer:
Weather: clear -> high humidity
Comment:
Detector Temperature: 114.00007 +- 0.00181 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:03:07
Morning 07:07:08
Science Observation
(Sun altitude < -10°)
Start 18:26:03
End 06:44:10
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:48:26
End 06:44:10


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:09:56 12:18:07 0.176
GB Time 00:55:21 10:55:44 0.084
Non-GB Time 01:14:35 01:22:23 0.905


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 120 00:05:43 00:10:24 0.549
NASA 797 00:37:59 01:14:35 0.509
GB 456 00:21:44 00:55:21 0.393


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 120 00:05:43 00:10:24 0.549
ToO 797 00:37:59 01:14:35 0.509
Bulge 456 00:21:44 00:55:21 0.393


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT NY 120 00:05:43 00:10:24 0.549
no_grid_test 12 00:00:34 00:03:45 0.152
no_grid 785 00:37:25 01:10:50 0.528
GB82_test OJ 24 00:01:08 00:12:41 0.090
GB82_dither OJ 48 00:02:17 00:04:32 0.503
GB99_dither OJ 48 00:02:17 00:04:35 0.498
GB116_dither OJ 48 00:02:17 00:04:38 0.493
GB81_dither OJ 48 00:02:17 00:04:38 0.493
GB98_dither OJ 48 00:02:17 00:04:38 0.493
GB115_dither OJ 48 00:02:17 00:05:34 0.411
GB80_dither OJ 48 00:02:17 00:04:38 0.493
GB97_dither OJ 48 00:02:17 00:04:32 0.503
GB114_dither OJ 48 00:02:17 00:04:51 0.471










Stats so far in 2025
Monthly observed fraction so far in 2025
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 103:35:29 259:42:08 0.399
Feb 53:54:42 259:20:18 0.208
Mar 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 244:24:55 372:31:50 0.656
Jun 26:19:08 36:52:26 0.714

Observed time so far in 2025
- Total time of each institute is calculated by the following
    [All observation time in 2025] = [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 2025] = [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 2025] = [All observation time in 2025] - [GB observation time in 2025]
    
    [OU, NASA, ABC time in 2025] = 0.24 x [Non-GB observation time in 2025]
    [SAAO time in 2025] = 0.28 x [Non-GB observation time in 2025]
    
- 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 1844:10:38 948:20:06 895:50:32 250:50:09 215:00:07 215:00:07 215:00:07 146:45:37
Observed 748:08:09
(40.57%)		 394:30:38
(41.60%)		 353:37:30
(39.47%)		 55:46:07
(22.23%)		 83:40:57
(38.92%)		 165:50:39
(77.14%)		 48:19:46
(22.48%)		 146:45:37
(N/A)
Remaining 1096:02:29
(59.43%)		 553:49:28
(58.40%)		 542:13:01
(60.53%)		 195:04:01
(77.77%)		 131:19:10
(61.08%)		 49:09:28
(22.86%)		 166:40:21
(77.52%)		 00:00:00
(N/A)











Camera status (2025/06/03)



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