PRIME Observation Log 2025/04/24

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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: 2025/04/24
Local observer: Seiya Nakayama
Remote observer:
Weather: clear
Comment:
Detector Temperature: 114.00000 +- 0.00111 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:27:40
Morning 06:42:15
Science Observation
(Sun altitude < -10°)
Start 18:49:20
End 06:20:32
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 22:25:41
End 06:20:32


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:36:03 11:31:12 1.007
GB Time 07:50:28 07:54:50 0.991
Non-GB Time 03:45:34 03:36:21 1.043


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 516 00:24:35 00:46:55 0.524
NASA 3246 02:34:43 03:45:34 0.686
GB 4452 03:32:12 07:50:28 0.451


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
calibration 4 00:00:11 00:00:41 0.276
TWILIGHT 512 00:24:24 00:46:13 0.528
ToO 3246 02:34:43 03:45:34 0.686
Bulge 4380 03:28:46 07:41:19 0.453
SKY 72 00:03:25 00:09:09 0.375


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
LSS_J 4 00:00:11 00:00:41 0.276
FLAT_test OJ 20 00:00:57 00:03:34 0.267
FLAT OJ 492 00:23:27 00:42:39 0.550
field19009_test 286 00:13:37 00:17:38 0.773
field19009 220 00:10:29 00:12:25 0.844
field19010 220 00:10:29 00:12:28 0.841
field18698 220 00:10:29 00:12:28 0.841
field19319 220 00:10:29 00:12:31 0.838
field18699 220 00:10:29 00:12:25 0.844
field19320 220 00:10:29 00:12:56 0.810
field18386 220 00:10:29 00:13:57 0.751
no_grid_test 162 00:07:43 00:20:41 0.373
no_grid 730 00:34:47 00:55:20 0.629
field19628_test 88 00:04:11 00:05:41 0.736
field19628 220 00:10:29 00:11:54 0.880
field18073 220 00:10:29 00:25:05 0.418
GB63_dither_test OH 164 00:07:49 00:29:57 0.261
GB63_dither OH 72 00:03:25 00:07:03 0.487
GB62_dither OH 72 00:03:25 00:07:00 0.490
GB61_dither OH 72 00:03:25 00:07:08 0.480
GB60_dither OH 72 00:03:25 00:07:05 0.484
GB59_dither OH 96 00:04:34 00:09:27 0.484
GB58_dither OH 84 00:04:00 00:09:35 0.418
GB57_dither OH 80 00:03:48 00:10:19 0.369
GB74_dither OH 72 00:03:25 00:07:03 0.487
GB75_dither OH 72 00:03:25 00:07:03 0.487
GB76_dither OH 72 00:03:25 00:07:03 0.487
GB77_dither OH 72 00:03:25 00:07:03 0.487
GB78_dither OH 72 00:03:25 00:07:19 0.468
GB79_dither OH 72 00:03:25 00:07:14 0.474
GB80_dither OH 72 00:03:25 00:07:14 0.474
GB97_dither OH 72 00:03:25 00:07:14 0.474
GB96_dither OH 72 00:03:25 00:07:14 0.474
GB95_dither OH 72 00:03:25 00:13:57 0.246
GB94_dither OH 72 00:03:25 00:07:08 0.480
GB93_dither OH 72 00:03:25 00:07:03 0.487
GB92_dither OH 72 00:03:25 00:07:00 0.490
GB91_dither OH 72 00:03:25 00:06:51 0.500
GB108_dither OH 72 00:03:25 00:07:11 0.477
GB109_dither OH 72 00:03:25 00:07:14 0.474
GB110_dither OH 72 00:03:25 00:07:14 0.474
GB111_dither OH 72 00:03:25 00:07:08 0.480
GB112_dither OH 72 00:03:25 00:07:14 0.474
GB113_dither OH 72 00:03:25 00:07:11 0.477
GB114_dither OH 72 00:03:25 00:07:08 0.480
GB131_dither OH 72 00:03:25 00:07:47 0.440
GB130_dither OH 72 00:03:25 00:07:05 0.484
GB129_dither OH 72 00:03:25 00:07:17 0.471
GB128_dither OH 72 00:03:25 00:09:09 0.375
GB127_dither OH 48 00:02:17 00:04:41 0.488
GB126_dither OH 48 00:02:17 00:04:49 0.474
GB125_dither OH 48 00:02:17 00:05:00 0.456
GCsky 72 00:03:25 00:09:09 0.375
GB63_dither_test OJ 44 00:02:05 00:08:33 0.245
GB63_dither OJ 48 00:02:17 00:04:32 0.503
GB62_dither OJ 48 00:02:17 00:04:35 0.498
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:04:38 0.493
GB59_dither OJ 48 00:02:17 00:04:35 0.498
GB58_dither OJ 48 00:02:17 00:04:35 0.498
GB57_dither OJ 48 00:02:17 00:04:32 0.503
GB74_dither OJ 48 00:02:17 00:04:38 0.493
GB75_dither OJ 48 00:02:17 00:04:38 0.493
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB77_dither OJ 48 00:02:17 00:04:32 0.503
GB78_dither OJ 48 00:02:17 00:04:38 0.493
GB79_dither OJ 48 00:02:17 00:04:38 0.493
GB80_dither OJ 48 00:02:17 00:04:38 0.493
GB97_dither OJ 48 00:02:17 00:04:38 0.493
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:35 0.498
GB93_dither OJ 48 00:02:17 00:04:41 0.488
GB92_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:38 0.493
GB108_dither OJ 48 00:02:17 00:04:38 0.493
GB109_dither OJ 48 00:02:17 00:04:35 0.498
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:43 0.484
GB112_dither OJ 48 00:02:17 00:04:35 0.498
GB113_dither OJ 48 00:02:17 00:04:38 0.493
GB114_dither OJ 48 00:02:17 00:04:38 0.493
GB131_dither OJ 48 00:02:17 00:04:43 0.484
GB130_dither OJ 48 00:02:17 00:04:38 0.493
GB129_dither OJ 48 00:02:17 00:04:38 0.493
GB128_dither OJ 48 00:02:17 00:04:41 0.488
GB127_dither OJ 48 00:02:17 00:04:41 0.488
GB126_dither OJ 48 00:02:17 00:04:41 0.488
GB125_dither OJ 48 00:02:17 00:05:03 0.452










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 110:55:49 268:28:25 0.413

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 1762:58:39 889:46:44 873:11:55 244:29:44 209:34:03 209:34:03 209:34:03 123:40:08
Observed 427:23:47
(24.24%)		 146:36:04
(16.48%)		 280:47:43
(32.16%)		 36:03:07
(14.75%)		 65:54:56
(31.45%)		 146:39:06
(69.98%)		 32:10:32
(15.35%)		 123:40:08
(N/A)
Remaining 1335:34:51
(75.76%)		 743:10:39
(83.52%)		 592:24:11
(67.84%)		 208:26:36
(85.25%)		 143:39:07
(68.55%)		 62:54:57
(30.02%)		 177:23:30
(84.65%)		 00:00:00
(N/A)











Camera status (2025/04/24)