PRIME Observation Log 2026/03/24

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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: 2026/03/24
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 114.52930 +- 0.02572 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:04:52
Morning 06:21:19
Science Observation
(Sun altitude < -10°)
Start 19:26:11
End 05:59:58
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 00:28:34
End 05:59:58


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:36:15 10:33:46 0.247
GB Time 00:15:41 05:31:23 0.047
Non-GB Time 02:20:33 05:02:22 0.465


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
SAAO 2134 01:41:43 02:20:33 0.724
GB 84 00:04:00 00:15:41 0.255


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 2134 01:41:43 02:20:33 0.724
Bulge 84 00:04:00 00:15:41 0.255


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field9703_test 20 00:00:57 00:07:49 0.122
field9703 684 00:32:36 00:44:57 0.725
field12409 684 00:32:36 00:38:35 0.845
field12728_test 20 00:00:57 00:02:04 0.458
field12728 684 00:32:36 00:43:39 0.747
field11519_test 4 00:00:11 00:00:59 0.193
field11519 38 00:01:48 00:02:27 0.738
GB83_test OJ 36 00:01:42 00:10:50 0.158
GB83_dither OJ 48 00:02:17 00:04:51 0.471










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 73:32:03 243:59:49 0.301

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 1736:19:26 923:09:46 813:09:40 227:41:06 195:09:31 195:09:31 195:09:31 25:37:47
Observed 228:44:26
(13.17%)		 74:21:41
(8.06%)		 154:22:44
(18.99%)		 57:53:35
(25.43%)		 30:52:21
(15.82%)		 37:15:59
(19.10%)		 28:20:48
(14.53%)		 25:37:47
(N/A)
Remaining 1507:34:59
(86.83%)		 848:48:04
(91.94%)		 658:46:55
(81.01%)		 169:47:31
(74.57%)		 164:17:09
(84.18%)		 157:53:31
(80.90%)		 166:48:42
(85.47%)		 00:00:00
(N/A)











Camera status (2026/03/24)



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