PRIME Observation Log 2025/11/23

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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: 2025/11/23
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 116.99987 +- 0.00200 K
ImageAcquisitionErrors occurred 1 times @
2025-11-24 03:42:45 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:47:14
Morning 04:59:11
Science Observation
(Sun altitude < -10°)
Start 20:11:56
End 04:34:28
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 03:45:22 08:22:31 0.448
GB Time 00:00:00 00:00:00 0.000
Non-GB Time 03:45:22 08:22:31 0.448


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 524 00:24:58 00:44:13 0.565
SAAO 505 00:24:04 00:56:20 0.427
OU 505 00:24:04 00:56:20 0.427
NASA 505 00:24:04 00:56:20 0.427
ABC 505 00:24:04 00:56:20 0.427


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 4 00:00:11 00:00:41 0.276
all_sky_grid 2020 01:36:17 03:45:22 0.427
calibration 520 00:24:47 00:43:31 0.569


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test OY 4 00:00:11 00:00:41 0.276
field7619_test 20 00:00:57 00:05:49 0.164
field7619 40 00:01:54 00:03:47 0.503
field7620 40 00:01:54 00:03:47 0.503
field7621 40 00:01:54 00:03:50 0.497
field7622 40 00:01:54 00:03:52 0.491
field7890 40 00:01:54 00:03:50 0.497
field7891 40 00:01:54 00:03:47 0.503
field7892 40 00:01:54 00:07:25 0.257
field15778_test 8 00:00:22 00:04:35 0.083
field15778 40 00:01:54 00:04:06 0.463
field15779 40 00:01:54 00:03:52 0.491
field15780 40 00:01:54 00:03:52 0.491
field17984 40 00:01:54 00:03:52 0.491
field17985 40 00:01:54 00:04:01 0.474
field17986 40 00:01:54 00:04:04 0.469
field17987 40 00:01:54 00:04:15 0.448
field17988 40 00:01:54 00:05:50 0.326
field18297 40 00:01:54 00:03:47 0.503
field18298 40 00:01:54 00:04:06 0.463
field18299 40 00:01:54 00:04:06 0.463
field18300 40 00:01:54 00:03:52 0.491
field18301 40 00:01:54 00:03:52 0.491
field18302 40 00:01:54 00:04:26 0.429
field18303 40 00:01:54 00:04:29 0.425
field18304 40 00:01:54 00:03:55 0.485
field18305 40 00:01:54 00:04:06 0.463
field18306 40 00:01:54 00:04:20 0.438
field18307 72 00:03:25 00:12:34 0.273
field18308 40 00:01:54 00:03:47 0.503
field18309 40 00:01:54 00:06:52 0.277
field19229 40 00:01:54 00:03:52 0.491
field19230 40 00:01:54 00:04:18 0.443
field19231 40 00:01:54 00:04:32 0.420
field19232 40 00:01:54 00:03:50 0.497
field19233 40 00:01:54 00:04:06 0.463
field19234 40 00:01:54 00:03:50 0.497
field19235 40 00:01:54 00:03:47 0.503
field19236 40 00:01:54 00:04:32 0.420
field19237 40 00:01:54 00:03:47 0.503
field19238 40 00:01:54 00:04:15 0.448
field19239 40 00:01:54 00:03:47 0.503
field19240 40 00:01:54 00:03:47 0.503
field19241 40 00:01:54 00:04:06 0.464
field19242 40 00:01:54 00:04:15 0.448
field19243 40 00:01:54 00:04:09 0.458
field19244 40 00:01:54 00:04:32 0.420
field19553 40 00:01:54 00:04:37 0.412
field19546 40 00:01:54 00:04:01 0.474
field19547 40 00:01:54 00:03:50 0.497
field19548 40 00:01:54 00:04:15 0.448
field19549 40 00:01:54 00:04:05 0.465
reset 40 00:01:54 00:05:00 0.381
superbias 480 00:22:52 00:38:31 0.594










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 190:24:38 318:36:32 0.598
Oct 183:24:57 296:59:20 0.618
Nov 120:52:16 199:46:40 0.605

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 2035:31:45 1045:33:03 989:58:42 277:11:38 237:35:41 237:35:41 237:35:41 224:17:28
Observed 1881:33:03
(92.44%)		 1045:33:03
(100.00%)		 836:00:00
(84.45%)		 193:55:24
(69.96%)		 185:20:34
(78.01%)		 307:17:00
(129.33%)		 149:27:00
(62.90%)		 224:17:28
(N/A)
Remaining 153:58:42
(7.56%)		 00:00:00
(0.00%)		 153:58:42
(15.55%)		 83:16:13
(30.04%)		 52:15:07
(21.99%)		 -70:18:42
(0.00%)		 88:08:40
(37.10%)		 00:00:00
(N/A)











Camera status (2025/11/23)



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