PRIME Observation Log 2025/06/02

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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: 2025/06/02
Local observer: Ryusei
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99989 +- 0.00140 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:03:17
Morning 07:06:38
Science Observation
(Sun altitude < -10°)
Start 18:26:12
End 06:43:42
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:52:22
End 06:43:42


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:23:34 12:17:29 0.927
GB Time 10:19:04 10:51:20 0.950
Non-GB Time 01:04:29 01:26:09 0.749


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
CALIB 80 00:03:48 00:07:02 0.541
NASA 718 00:34:13 01:04:29 0.531
GB 5944 04:43:19 10:19:04 0.458


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 80 00:03:48 00:07:02 0.541
ToO 718 00:34:13 01:04:29 0.531
Bulge 5728 04:33:02 09:52:41 0.461
SKY 216 00:10:17 00:26:23 0.390


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT NY 80 00:03:48 00:07:02 0.541
no_grid_test 58 00:02:45 00:20:36 0.134
no_grid 660 00:31:27 00:43:53 0.717
GB83_test OJ 20 00:00:57 00:05:04 0.188
GB99_dither OJ 48 00:02:17 00:04:35 0.498
GB81_dither OJ 48 00:02:17 00:04:32 0.503
GB98_dither OJ 48 00:02:17 00:04:32 0.503
GB115_dither OJ 48 00:02:17 00:05:20 0.429
GB80_dither OJ 48 00:02:17 00:04:55 0.465
GB80_test OJ 20 00:00:57 00:05:15 0.181
GB97_dither OJ 48 00:02:17 00:04:32 0.503
GB96_dither OJ 48 00:02:17 00:04:38 0.493
GB95_dither OJ 48 00:02:17 00:04:32 0.503
GB94_dither OJ 48 00:02:17 00:04:35 0.498
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:35 0.498
GB91_dither OJ 48 00:02:17 00:06:58 0.328
GCsky 216 00:10:17 00:26:23 0.390
GB80_dither OH 24 00:01:08 00:02:24 0.474
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:02:35 0.440
GB76_dither OH 552 00:26:18 00:54:33 0.482
GB77_dither OH 552 00:26:18 00:56:08 0.469
GB78_dither OH 552 00:26:18 00:54:33 0.482
GB94_dither OH 548 00:26:07 01:04:10 0.407
GB111_dither OH 528 00:25:10 00:53:21 0.472
GB110_dither OH 528 00:25:10 00:52:48 0.477
GB109_dither OH 264 00:12:35 00:26:35 0.473
GB92_dither OH 144 00:06:51 00:14:14 0.482
GB93_dither OH 144 00:06:51 00:14:17 0.480
GB75_dither OH 264 00:12:35 00:26:52 0.468
GB112_dither OH 264 00:12:35 00:26:18 0.478
GB79_dither OH 264 00:12:35 00:28:07 0.447
GB60_dither OH 144 00:06:51 00:14:39 0.468
GB95_dither OH 96 00:04:34 00:09:39 0.474
GB113_dither OH 120 00:05:43 00:12:03 0.474
GB74_dither OH 24 00:01:08 00:02:27 0.465
GB91_dither OH 24 00:01:08 00:02:24 0.474
GB108_dither OH 24 00:01:08 00:02:38 0.432
GB109_test OJ 4 00:00:11 00:00:41 0.276










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 24:09:11 24:34:19 0.983

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 1848:09:45 952:52:37 895:17:08 250:40:47 214:52:06 214:52:06 214:52:06 146:35:12
Observed 745:58:12
(40.36%)		 393:35:17
(41.31%)		 352:22:55
(39.36%)		 55:46:07
(22.25%)		 83:40:57
(38.95%)		 164:36:03
(76.61%)		 48:19:46
(22.49%)		 146:35:12
(N/A)
Remaining 1102:11:33
(59.64%)		 559:17:20
(58.69%)		 542:54:12
(60.64%)		 194:54:40
(77.75%)		 131:11:09
(61.05%)		 50:16:02
(23.39%)		 166:32:20
(77.51%)		 00:00:00
(N/A)











Camera status (2025/06/02)



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