PRIME Observation Log 2025/09/24

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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: 2025/09/24
Local observer: None
Remote observer: Yui
Weather: clear
Comment:
Detector Temperature: 116.00034 +- 0.00210 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:56:36
Morning 06:00:00
Science Observation
(Sun altitude < -10°)
Start 19:18:02
End 05:38:35
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:18:02
End 23:53:25


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 05:31:36 10:20:33 0.534
GB Time 04:28:08 04:35:22 0.974
Non-GB Time 01:03:27 05:45:10 0.184


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 120 00:05:43 00:12:40 0.451
GB 2064 01:38:23 04:28:08 0.367
SAAO 138 00:06:34 00:15:51 0.415
OU 138 00:06:34 00:15:51 0.415
NASA 138 00:06:34 00:15:51 0.415
ABC 138 00:06:34 00:15:51 0.415


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 120 00:05:43 00:12:40 0.451
SKY 148 00:07:03 00:32:47 0.215
Bulge 1916 01:31:19 03:55:20 0.388
all_sky_grid 552 00:26:18 01:03:27 0.415


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OJ 120 00:05:43 00:12:40 0.451
GCsky_test 76 00:03:37 00:23:35 0.154
GCsky 72 00:03:25 00:09:12 0.373
GB60_dither OJ 96 00:04:34 00:13:01 0.352
GB80_dither OJ 96 00:04:34 00:12:18 0.372
GB79_dither OJ 96 00:04:34 00:16:56 0.270
GB78_test OJ 8 00:00:22 00:12:26 0.031
GB78_dither OJ 88 00:04:11 00:13:08 0.319
GB77_dither OJ 48 00:02:17 00:05:06 0.448
GB76_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:38 0.493
GB74_dither OJ 48 00:02:17 00:04:49 0.474
GB91_dither OJ 48 00:02:17 00:04:38 0.493
GB92_dither OJ 48 00:02:17 00:04:46 0.479
GB93_dither OJ 48 00:02:17 00:04:49 0.474
GB94_dither OJ 48 00:02:17 00:04:52 0.470
GB95_dither OJ 48 00:02:17 00:04:44 0.483
GB96_dither OJ 48 00:02:17 00:05:00 0.457
GB97_dither OJ 48 00:02:17 00:04:49 0.474
GB114_dither OJ 48 00:02:17 00:05:03 0.452
GB113_dither OJ 48 00:02:17 00:04:46 0.479
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:46 0.479
GB110_dither OJ 48 00:02:17 00:05:06 0.448
GB109_dither OJ 48 00:02:17 00:05:12 0.440
GB108_dither OJ 48 00:02:17 00:06:04 0.376
GB76_dither OH 72 00:03:25 00:07:47 0.440
GB77_dither OH 48 00:02:17 00:04:52 0.470
GB78_dither OH 64 00:03:03 00:07:39 0.398
GB94_dither OH 72 00:03:25 00:07:58 0.430
GB111_dither OH 72 00:03:25 00:07:28 0.460
GB110_dither OH 72 00:03:25 00:07:22 0.465
GB109_dither OH 36 00:01:42 00:06:54 0.248
GB108_dither OH 24 00:01:08 00:02:47 0.411
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:03:18 0.347
GB92_test OH 16 00:00:45 00:04:27 0.171
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:49 0.404
GB75_dither OH 24 00:01:08 00:02:33 0.448
GB112_dither OH 48 00:02:17 00:05:09 0.443
GB79_dither OH 24 00:01:08 00:03:11 0.358
field5775_test 32 00:01:31 00:09:03 0.168
field5775 40 00:01:54 00:04:06 0.463
field6273 40 00:01:54 00:03:52 0.491
field6274 40 00:01:54 00:04:06 0.463
field7581 40 00:01:54 00:04:01 0.474
field7582 40 00:01:54 00:04:12 0.453
field10133 40 00:01:54 00:04:01 0.474
field10134 40 00:01:54 00:04:40 0.408
field12250 40 00:01:54 00:04:37 0.412
field7887 40 00:01:54 00:04:12 0.453
field7888 40 00:01:54 00:04:04 0.469
field7889 40 00:01:54 00:04:06 0.464
field7886 40 00:01:54 00:04:01 0.474
field7885 40 00:01:54 00:04:19 0.440










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 152:43:51 257:16:10 0.594

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 1972:36:54 1030:26:28 942:10:25 263:48:31 226:07:18 226:07:18 226:07:18 190:15:09
Observed 1539:35:00
(78.05%)		 965:06:53
(93.66%)		 574:28:07
(60.97%)		 136:40:50
(51.81%)		 127:33:37
(56.41%)		 218:01:11
(96.42%)		 92:12:26
(40.78%)		 190:15:09
(N/A)
Remaining 433:01:53
(21.95%)		 65:19:34
(6.34%)		 367:42:18
(39.03%)		 127:07:40
(48.19%)		 98:33:40
(43.59%)		 08:06:06
(3.58%)		 133:54:51
(59.22%)		 00:00:00
(N/A)











Camera status (2025/09/24)



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