PRIME Observation Log 2025/07/18

Return to index
Previous day Next day

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: 2025/07/18
Local observer: Togo
Remote observer:
Weather: Clear
Comment:
Detector Temperature: 114.00003 +- 0.00181 K
ImageAcquisitionErrors occurred 2 times @
2025-07-18 20:01:20 SAT
2025-07-19 05:00:09 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:15:20
Morning 07:10:31
Science Observation
(Sun altitude < -10°)
Start 18:38:01
End 06:47:53
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:38:01
End 04:20:48


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 11:30:49 12:09:52 0.946
GB Time 08:54:50 09:42:47 0.918
Non-GB Time 02:35:58 02:27:05 1.060


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 280 00:13:20 00:28:24 0.470
GB 4788 03:48:13 08:54:50 0.427
SAAO 353 00:16:49 00:38:59 0.432
OU 353 00:16:49 00:38:59 0.432
NASA 353 00:16:49 00:38:59 0.432
ABC 353 00:16:49 00:38:59 0.432


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 280 00:13:20 00:28:24 0.470
Bulge 4692 03:43:39 08:42:26 0.428
SKY 96 00:04:34 00:12:24 0.369
all_sky_grid 1412 01:07:18 02:35:58 0.432


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT OY 280 00:13:20 00:28:24 0.470
GB74_test OJ 12 00:00:34 00:03:56 0.145
GB74_dither OJ 24 00:01:08 00:02:16 0.503
GB75_dither OJ 24 00:01:08 00:02:55 0.391
GB76_dither OJ 24 00:01:08 00:02:19 0.493
GB77_dither OJ 24 00:01:08 00:02:58 0.385
GB78_dither OJ 24 00:01:08 00:02:19 0.493
GB79_dither OJ 24 00:01:08 00:02:21 0.484
GB80_dither OJ 24 00:01:08 00:02:21 0.484
GB97_dither OJ 24 00:01:08 00:02:19 0.493
GB96_dither OJ 24 00:01:08 00:02:38 0.432
GB95_dither OJ 24 00:01:08 00:02:19 0.493
GB94_dither OJ 24 00:01:08 00:02:35 0.440
GB93_dither OJ 24 00:01:08 00:02:16 0.503
GB92_dither OJ 24 00:01:08 00:02:19 0.493
GB91_dither OJ 24 00:01:08 00:02:19 0.493
GB108_dither OJ 24 00:01:08 00:02:38 0.432
GB109_dither OJ 24 00:01:08 00:02:19 0.493
GB110_dither OJ 24 00:01:08 00:02:19 0.493
GB111_dither OJ 24 00:01:08 00:02:19 0.493
GB112_dither OJ 24 00:01:08 00:02:41 0.425
GB113_dither OJ 24 00:01:08 00:02:19 0.493
GB114_dither OJ 24 00:01:08 00:02:37 0.436
GCsky 96 00:04:34 00:12:24 0.369
GB76_test OH 8 00:00:22 00:02:20 0.163
GB76_dither OH 452 00:21:32 00:47:56 0.449
GB77_dither OH 400 00:19:04 00:54:51 0.348
GB78_dither OH 384 00:18:18 00:40:04 0.457
GB94_dither OH 408 00:19:26 00:43:03 0.452
GB111_dither OH 408 00:19:26 00:47:02 0.413
GB110_dither OH 408 00:19:26 00:43:01 0.452
GB109_dither OH 192 00:09:09 00:20:47 0.440
GB92_dither OH 96 00:04:34 00:10:28 0.437
GB93_dither OH 96 00:04:34 00:10:05 0.453
GB75_dither OH 192 00:09:09 00:20:49 0.439
GB77_test OH 4 00:00:11 00:01:07 0.169
GB112_dither OH 216 00:10:17 00:23:37 0.436
GB79_dither OH 192 00:09:09 00:21:20 0.429
GB60_dither OH 120 00:05:43 00:12:01 0.476
GB95_dither OH 96 00:04:34 00:09:58 0.459
GB113_dither OH 72 00:03:25 00:08:01 0.427
GB107_dither OH 24 00:01:08 00:02:35 0.440
GB106_dither OH 24 00:01:08 00:02:16 0.503
GB105_dither OH 24 00:01:08 00:02:21 0.484
GB88_dither OH 24 00:01:08 00:02:19 0.493
GB89_dither OH 24 00:01:08 00:02:23 0.479
GB90_dither OH 24 00:01:08 00:02:40 0.428
GB73_dither OH 24 00:01:08 00:02:21 0.484
GB72_dither OH 24 00:01:08 00:02:38 0.432
GB71_dither OH 24 00:01:08 00:07:24 0.154
GB83_dither OH 24 00:01:08 00:02:54 0.393
GB100_dither OH 24 00:01:08 00:02:16 0.503
GB117_dither OH 24 00:01:08 00:02:41 0.425
GB82_dither OH 24 00:01:08 00:02:35 0.440
GB99_dither OH 24 00:01:08 00:02:35 0.440
GB116_dither OH 24 00:01:08 00:02:21 0.484
GB81_dither OH 24 00:01:08 00:02:19 0.493
GB98_dither OH 24 00:01:08 00:02:19 0.493
GB115_dither OH 24 00:01:08 00:03:09 0.362
field11642_test 24 00:01:08 00:06:48 0.168
field11642 40 00:01:54 00:04:06 0.463
field11643 40 00:01:54 00:03:50 0.497
field11644 40 00:01:54 00:04:23 0.434
field11645 40 00:01:54 00:04:18 0.443
field11646 40 00:01:54 00:04:09 0.458
field11647 40 00:01:54 00:04:06 0.463
field11648 40 00:01:54 00:04:20 0.438
field11649 40 00:01:54 00:04:26 0.429
field11650 40 00:01:54 00:03:50 0.496
field11651 40 00:01:54 00:04:00 0.475
field11652 40 00:01:54 00:04:04 0.469
field11653 60 00:02:51 00:06:09 0.465
field11653_test 8 00:00:22 00:04:03 0.094
field11654 40 00:01:54 00:03:50 0.497
field11655 40 00:01:54 00:04:40 0.408
field11656 40 00:01:54 00:04:43 0.404
field11657 40 00:01:54 00:03:52 0.491
field11658 40 00:01:54 00:04:12 0.453
field11659 40 00:01:54 00:04:15 0.447
field11660 40 00:01:54 00:04:20 0.440
field11661 40 00:01:54 00:04:06 0.463
field11662 40 00:01:54 00:03:47 0.503
field11663 40 00:01:54 00:04:40 0.408
field11664 40 00:01:54 00:04:07 0.462
field11665 40 00:01:54 00:04:34 0.417
field11666 40 00:01:54 00:04:04 0.469
field11667 40 00:01:54 00:04:06 0.463
field11668 40 00:01:54 00:04:23 0.434
field11669 40 00:01:54 00:04:04 0.469
field11670 40 00:01:54 00:03:47 0.503
field11671 40 00:01:54 00:04:12 0.453
field11681 40 00:01:54 00:04:23 0.434
field11682 40 00:01:54 00:03:53 0.490
field11683 40 00:01:54 00:04:03 0.470
field11684 40 00:01:54 00:05:08 0.371










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 121:05:03 220:53:33 0.548

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 1871:30:34 958:13:27 913:17:06 255:43:11 219:11:18 219:11:18 219:11:18 160:04:05
Observed 1052:53:43
(56.26%)		 650:45:57
(67.91%)		 402:07:45
(44.03%)		 68:26:22
(26.76%)		 95:37:37
(43.63%)		 177:47:19
(81.11%)		 60:16:26
(27.50%)		 160:04:05
(N/A)
Remaining 818:36:50
(43.74%)		 307:27:29
(32.09%)		 511:09:20
(55.97%)		 187:16:49
(73.24%)		 123:33:40
(56.37%)		 41:23:59
(18.89%)		 158:54:51
(72.50%)		 00:00:00
(N/A)











Camera status (2025/07/18)



Return to index
Previous day Next day