PRIME Observation Log 2025/09/10

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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: 2025/09/10
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 115.68223 +- 0.35257 K
ImageAcquisitionErrors occurred 3 times @
2025-09-10 23:15:19 SAT
2025-09-11 02:07:20 SAT
2025-09-11 06:51:48 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:47:50
Morning 06:18:41
Science Observation
(Sun altitude < -10°)
Start 19:09:10
End 05:57:23
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 19:09:10
End 00:48:28


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 10:32:06 10:48:12 0.975
GB Time 05:11:33 05:39:18 0.918
Non-GB Time 05:20:32 05:08:54 1.038


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 244 00:11:37 00:42:38 0.273
GB 2572 02:02:35 05:11:33 0.393
SAAO 682 00:32:30 01:20:08 0.406
OU 682 00:32:30 01:20:08 0.406
NASA 682 00:32:30 01:20:08 0.406
ABC 682 00:32:30 01:20:08 0.406


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 236 00:11:14 00:41:16 0.273
SKY 104 00:04:57 00:22:08 0.224
Bulge 2468 01:57:38 04:49:25 0.406
all_sky_grid 2728 02:10:02 05:20:32 0.406
test 8 00:00:22 00:01:22 0.276


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
FLAT_test ZO 12 00:00:34 00:08:22 0.068
FLAT ZO 224 00:10:40 00:32:53 0.325
GCsky_test 32 00:01:31 00:13:46 0.111
GCsky 72 00:03:25 00:08:22 0.410
GB76_dither OH 240 00:11:26 00:26:03 0.439
GB77_dither OH 240 00:11:26 00:25:32 0.448
GB78_dither OH 216 00:10:17 00:23:05 0.446
GB94_dither OH 240 00:11:26 00:25:59 0.440
GB111_dither OH 240 00:11:26 00:24:40 0.463
GB110_dither OH 240 00:11:26 00:26:42 0.428
GB109_dither OH 120 00:05:43 00:26:20 0.217
GB92_dither OH 72 00:03:25 00:07:32 0.455
GB93_dither OH 96 00:04:34 00:10:05 0.454
GB75_dither OH 140 00:06:40 00:16:05 0.415
GB112_dither OH 120 00:05:43 00:12:43 0.450
GB79_dither OH 96 00:04:34 00:11:14 0.407
GB60_dither OH 48 00:02:17 00:04:57 0.461
GB75_test OH 4 00:00:11 00:01:44 0.110
GB95_dither OH 48 00:02:17 00:05:06 0.448
GB113_dither OH 48 00:02:17 00:05:11 0.440
GB108_dither OH 48 00:02:17 00:05:27 0.419
GB91_dither OH 48 00:02:17 00:04:56 0.463
GB74_dither OH 48 00:02:17 00:04:51 0.472
GB114_dither OH 44 00:02:05 00:13:41 0.153
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 24 00:01:08 00:02:41 0.425
field9570_test 24 00:01:08 00:21:02 0.054
field9570 40 00:01:54 00:04:29 0.424
field9571 40 00:01:54 00:04:32 0.420
field9572 40 00:01:54 00:04:23 0.435
field9573 40 00:01:54 00:04:04 0.469
field9574 40 00:01:54 00:04:06 0.463
field9575 40 00:01:54 00:04:37 0.412
field9576 40 00:01:54 00:03:50 0.497
field9577 40 00:01:54 00:04:06 0.463
field9578 40 00:01:54 00:04:20 0.438
field9579 40 00:01:54 00:03:47 0.503
field9580 40 00:01:54 00:04:10 0.456
field9581 64 00:03:03 00:16:30 0.185
field9582 40 00:01:54 00:03:50 0.497
field9583 40 00:01:54 00:04:06 0.463
field9584 40 00:01:54 00:04:06 0.463
field9585 40 00:01:54 00:03:52 0.491
field9586 40 00:01:54 00:04:09 0.458
field9587 40 00:01:54 00:03:47 0.503
field9588 40 00:01:54 00:04:20 0.438
field9589 40 00:01:54 00:03:47 0.503
field9590 40 00:01:54 00:04:04 0.469
field9591 40 00:01:54 00:03:50 0.497
field9592 40 00:01:54 00:04:37 0.412
field9593 40 00:01:54 00:04:06 0.463
field9594 40 00:01:54 00:04:23 0.434
field9595 40 00:01:54 00:04:24 0.433
field9596 40 00:01:54 00:04:17 0.444
field9597 40 00:01:54 00:03:50 0.496
field9598 40 00:01:54 00:04:00 0.475
field9599 40 00:01:54 00:04:06 0.463
field9600 40 00:01:54 00:04:04 0.469
field9601 40 00:01:54 00:04:54 0.388
field9602 40 00:01:54 00:04:18 0.443
field9603 40 00:01:54 00:04:40 0.408
field9604 40 00:01:54 00:04:34 0.416
field9605 40 00:01:54 00:04:32 0.420
field9606 40 00:01:54 00:04:14 0.449
field9607 40 00:01:54 00:04:20 0.438
field9608 40 00:01:54 00:04:20 0.438
field9609 40 00:01:54 00:04:37 0.412
field9610 40 00:01:54 00:04:24 0.433
field9611 40 00:01:54 00:04:20 0.439
field9612 40 00:01:54 00:04:37 0.412
field9613 40 00:01:54 00:04:06 0.463
field9614 40 00:01:54 00:04:23 0.433
field9615 40 00:01:54 00:04:15 0.449
field9616 40 00:01:54 00:04:01 0.474
field9617 40 00:01:54 00:04:18 0.443
field9618 40 00:01:54 00:04:04 0.469
field9619 40 00:01:54 00:04:20 0.439
field9620 40 00:01:54 00:04:04 0.469
field9621 40 00:01:54 00:05:28 0.349
field9622 40 00:01:54 00:04:04 0.469
field9623 40 00:01:54 00:03:50 0.497
field9624 40 00:01:54 00:04:01 0.474
field9625 40 00:01:54 00:04:04 0.469
field9626 40 00:01:54 00:04:06 0.463
field9627 40 00:01:54 00:04:18 0.443
field9628 40 00:01:54 00:04:23 0.433
field9629 40 00:01:54 00:04:31 0.421
field9630 40 00:01:54 00:04:04 0.468
field9631 40 00:01:54 00:04:15 0.448
field9632 40 00:01:54 00:03:47 0.503
field9633 40 00:01:54 00:04:15 0.448
field9634 40 00:01:54 00:04:18 0.443
field9635 40 00:01:54 00:04:18 0.443
field9636 40 00:01:54 00:07:23 0.258
test 8 00:00:22 00:01:22 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 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 81:03:02 109:26:43 0.741

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 1974:50:47 1026:36:33 948:14:14 265:30:23 227:34:36 227:34:36 227:34:36 183:51:47
Observed 1467:54:10
(74.33%)		 925:41:01
(90.17%)		 542:13:09
(57.18%)		 128:30:54
(48.40%)		 120:39:07
(53.02%)		 207:45:10
(91.29%)		 85:17:56
(37.48%)		 183:51:47
(N/A)
Remaining 506:56:37
(25.67%)		 100:55:32
(9.83%)		 406:01:04
(42.82%)		 136:59:28
(51.60%)		 106:55:29
(46.98%)		 19:49:26
(8.71%)		 142:16:40
(62.52%)		 00:00:00
(N/A)











Camera status (2025/09/10)



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