PRIME Observation Log 2025/09/28

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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: 2025/09/28
Local observer:
Remote observer: Ryusei
Weather: clear
Comment:
Detector Temperature: 116.00014 +- 0.00120 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:59:15
Morning 05:54:39
Science Observation
(Sun altitude < -10°)
Start 19:20:46
End 05:33:09
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:20:46
End 23:37:41


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 02:35:07 10:12:22 0.253
GB Time 02:35:07 04:16:55 0.604
Non-GB Time 00:00:00 05:55:27 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 124 00:05:54 00:19:24 0.305
GB 1256 00:59:52 02:35:07 0.386


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 124 00:05:54 00:19:24 0.305
SKY 200 00:09:32 00:46:06 0.207
Bulge 1056 00:50:20 01:49:00 0.462


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OJ 4 00:00:11 00:00:22 0.503
FLAT OJ 120 00:05:43 00:19:01 0.301
GCsky_test 56 00:02:40 00:28:48 0.093
GCsky 144 00:06:51 00:17:18 0.397
GB60_dither OJ 48 00:02:17 00:04:41 0.488
GB80_dither OJ 48 00:02:17 00:04:52 0.470
GB79_dither OJ 48 00:02:17 00:04:52 0.470
GB78_dither OJ 48 00:02:17 00:04:38 0.493
GB77_dither OJ 48 00:02:17 00:05:42 0.400
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:05:28 0.418
GB74_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:38 0.493
GB92_dither OJ 48 00:02:17 00:05:09 0.444
GB93_dither OJ 48 00:02:17 00:04:52 0.469
GB94_dither OJ 48 00:02:17 00:05:05 0.449
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:55 0.465
GB97_dither OJ 48 00:02:17 00:05:23 0.425
GB114_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:05:28 0.418
GB112_dither OJ 48 00:02:17 00:04:35 0.498
GB111_dither OJ 48 00:02:17 00:04:38 0.493
GB110_dither OJ 48 00:02:17 00:05:20 0.429
GB109_dither OJ 48 00:02:17 00:04:38 0.493
GB108_dither OJ 48 00:02:17 00:05:31 0.414










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 209:59:39 370:50:11 0.566
Jul 224:49:02 377:25:14 0.596
Aug 230:19:15 357:22:01 0.644
Sep 171:26:02 298:17:57 0.575

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 1970:48:11 1030:44:54 940:03:16 263:12:55 225:36:47 225:36:47 225:36:47 192:07:34
Observed 1558:17:11
(79.07%)		 974:13:01
(94.52%)		 584:04:09
(62.13%)		 139:04:51
(52.84%)		 129:57:38
(57.60%)		 220:25:12
(97.70%)		 94:36:27
(41.93%)		 192:07:34
(N/A)
Remaining 412:30:59
(20.93%)		 56:31:52
(5.48%)		 355:59:07
(37.87%)		 124:08:03
(47.16%)		 95:39:08
(42.40%)		 05:11:34
(2.30%)		 131:00:19
(58.07%)		 00:00:00
(N/A)











Camera status (2025/09/28)



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