PRIME Observation Log 2023/12/25

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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: 2023/12/25
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 0.00000 +- 0.00000 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 20:10:33
Morning 05:03:15
Science Observation
(Sun altitude < -10°)
Start 20:36:19
End 04:37:30
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start --:--:--
End --:--:--


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:23:01 08:01:10 0.796
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 06:23:01 08:01:10 0.796


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 304 00:14:29 00:33:23 0.434
OU 6575 05:13:24 06:23:01 0.818


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 304 00:14:29 00:33:23 0.434
Reduction 200 00:09:32 00:25:20 0.376
Superbias 2000 01:35:20 02:12:22 0.720
Dark 4375 03:28:32 03:45:18 0.926


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT ZO 304 00:14:29 00:33:23 0.434
DY 6575 05:13:24 06:23:01 0.818










Stats so far in 2023
Monthly observed fraction so far in 2023
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 18:43:03 259:20:03 0.072
Feb 51:45:11 258:50:12 0.200
Mar 55:18:59 318:34:15 0.174
Apr 77:47:40 337:41:57 0.230
May 97:43:38 372:13:44 0.263
Jun 49:38:22 370:47:30 0.134
Jul 188:52:24 377:38:54 0.500
Aug 166:19:41 357:47:22 0.465
Sep 168:01:16 319:07:11 0.527
Oct 54:09:44 297:33:05 0.182
Nov 82:14:21 258:12:23 0.319
Dec 161:56:37 201:47:38 0.803

Observed time so far in 2023
- Total time of each institute is calculated by the following
    [All observation time in 2023] = [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 2023] = [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 2023] = [All observation time in 2023] - [GB observation time in 2023]
    
    [OU, NASA, ABC time in 2023] = 0.24 x [Non-GB observation time in 2023]
    [SAAO time in 2023] = 0.28 x [Non-GB observation time in 2023]
    
- 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 1196:38:25 284:22:12 912:16:12 255:26:08 218:56:41 218:56:41 218:56:41 53:17:25
Observed 1172:31:03
(97.98%)		 284:22:12
(100.00%)		 888:08:50
(97.36%)		 00:00:00
(0.00%)		 874:50:08
(399.57%)		 13:18:42
(6.08%)		 00:00:00
(0.00%)		 53:17:25
(N/A)
Remaining 24:07:22
(2.02%)		 00:00:00
(0.00%)		 24:07:22
(2.64%)		 255:26:08
(100.00%)		 -656:06:33
(0.00%)		 205:37:59
(93.92%)		 218:56:41
(100.00%)		 00:00:00
(N/A)











Camera status (2023/12/25)