PRIME Observation Log 2025/04/02

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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: 2025/04/02
Local observer: Ryo Ogawa
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99996 +- 0.00089 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:53:01
Morning 06:27:37
Science Observation
(Sun altitude < -10°)
Start 19:14:20
End 06:06:17
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:52:10
End 06:06:17


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:10:42 10:51:57 0.569
GB Time 01:29:19 06:14:07 0.239
Non-GB Time 04:41:22 04:37:50 1.013


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.)
GB 880 00:41:56 01:29:19 0.470
CALIB 264 00:12:35 00:44:51 0.281
ALLSKY 2900 02:18:14 04:41:22 0.491
SAAO 725 00:34:33 01:10:20 0.491
OU 725 00:34:33 01:10:20 0.491
NASA 725 00:34:33 01:10:20 0.491
ABC 725 00:34:33 01:10:20 0.491


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 880 00:41:56 01:29:19 0.470
TWILIGHT 264 00:12:35 00:44:51 0.281
all_sky_grid 2900 02:18:14 04:41:22 0.491


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB126_dither OH 28 00:01:20 00:03:03 0.437
FLAT_test OJ 24 00:01:08 00:19:58 0.057
FLAT OJ 240 00:11:26 00:24:52 0.460
field11505_test 20 00:00:57 00:05:23 0.177
field11504 40 00:01:54 00:03:52 0.491
field11505 80 00:03:48 00:07:34 0.503
field11506 40 00:01:54 00:03:50 0.497
field11507 40 00:01:54 00:03:47 0.503
field11508 40 00:01:54 00:03:47 0.503
field11509 40 00:01:54 00:03:50 0.497
field11510 40 00:01:54 00:03:55 0.485
field11511 40 00:01:54 00:03:52 0.491
field11512 40 00:01:54 00:03:50 0.497
field11513 40 00:01:54 00:03:50 0.497
field11514 40 00:01:54 00:03:50 0.497
field11515 40 00:01:54 00:03:50 0.497
field11516 40 00:01:54 00:03:47 0.503
field11517 40 00:01:54 00:03:47 0.503
field11518 40 00:01:54 00:03:50 0.497
field11519 40 00:01:54 00:03:47 0.503
field11520 40 00:01:54 00:03:47 0.503
field11521 40 00:01:54 00:03:50 0.497
field11522 40 00:01:54 00:03:50 0.497
field11523 40 00:01:54 00:03:50 0.497
field11524 40 00:01:54 00:03:50 0.497
field11525 40 00:01:54 00:03:50 0.497
field11526 40 00:01:54 00:03:52 0.491
field11527 40 00:01:54 00:03:52 0.491
field11528 40 00:01:54 00:03:50 0.497
field11529 40 00:01:54 00:03:50 0.497
field11530 40 00:01:54 00:03:47 0.503
field11531 40 00:01:54 00:03:47 0.503
field11532 40 00:01:54 00:03:50 0.497
field11533 40 00:01:54 00:03:50 0.497
field11534 40 00:01:54 00:03:50 0.497
field11535 40 00:01:54 00:03:50 0.497
field11536 40 00:01:54 00:03:47 0.503
field11537 40 00:01:54 00:03:47 0.503
field11538 40 00:01:54 00:03:47 0.503
field11539 40 00:01:54 00:03:50 0.497
field11540 40 00:01:54 00:03:50 0.497
field11541 40 00:01:54 00:03:50 0.497
field11542 40 00:01:54 00:03:50 0.497
field11543 40 00:01:54 00:03:47 0.503
field11544 40 00:01:54 00:03:50 0.497
field11545 40 00:01:54 00:03:50 0.497
field11546 40 00:01:54 00:03:52 0.491
field11547 40 00:01:54 00:03:50 0.497
field11548 40 00:01:54 00:03:50 0.497
field11549 40 00:01:54 00:03:47 0.503
field11550 40 00:01:54 00:03:47 0.503
field11551 40 00:01:54 00:03:47 0.503
field11552 40 00:01:54 00:03:50 0.497
field11553 40 00:01:54 00:03:50 0.497
field11554 40 00:01:54 00:03:50 0.497
field11555 40 00:01:54 00:03:50 0.497
field11556 40 00:01:54 00:03:47 0.503
field11557 40 00:01:54 00:03:47 0.503
field11558 40 00:01:54 00:03:50 0.497
field11559 40 00:01:54 00:03:47 0.503
field11560 40 00:01:54 00:03:47 0.503
field11561 40 00:01:54 00:03:47 0.503
field11562 40 00:01:54 00:03:47 0.503
field11563 40 00:01:54 00:03:47 0.503
field11564 40 00:01:54 00:03:50 0.497
field11565 40 00:01:54 00:03:55 0.485
field11566 40 00:01:54 00:03:52 0.491
field11567 40 00:01:54 00:03:55 0.485
field11568 40 00:01:54 00:03:50 0.497
field11569 40 00:01:54 00:03:47 0.503
field11570 40 00:01:54 00:03:50 0.497
field11571 40 00:01:54 00:03:47 0.503
field11572 40 00:01:54 00:03:50 0.497
field11573 40 00:01:54 00:03:47 0.503
field11574 40 00:01:54 00:04:26 0.429
GB63_dither_test OH 40 00:01:54 00:07:17 0.262
GB63_dither OH 24 00:01:08 00:02:19 0.493
GB62_dither OH 24 00:01:08 00:02:19 0.493
GB61_dither OH 24 00:01:08 00:02:21 0.484
GB60_dither OH 24 00:01:08 00:02:16 0.503
GB59_dither OH 24 00:01:08 00:02:16 0.503
GB58_dither OH 24 00:01:08 00:02:19 0.493
GB57_dither OH 24 00:01:08 00:02:19 0.493
GB74_dither OH 24 00:01:08 00:02:16 0.503
GB75_dither OH 24 00:01:08 00:02:19 0.493
GB76_dither OH 24 00:01:08 00:02:19 0.493
GB77_dither OH 24 00:01:08 00:02:19 0.493
GB78_dither OH 24 00:01:08 00:02:19 0.493
GB79_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 24 00:01:08 00:02:19 0.493
GB97_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:19 0.493
GB94_dither OH 24 00:01:08 00:02:19 0.493
GB93_dither OH 24 00:01:08 00:02:21 0.484
GB92_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:19 0.493
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB109_dither OH 24 00:01:08 00:02:21 0.484
GB110_dither OH 24 00:01:08 00:02:21 0.484
GB111_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 24 00:01:08 00:02:19 0.493
GB113_dither OH 24 00:01:08 00:02:19 0.493
GB114_dither OH 24 00:01:08 00:02:24 0.474
GB131_dither OH 24 00:01:08 00:02:21 0.484
GB130_dither OH 24 00:01:08 00:02:19 0.493
GB129_dither OH 24 00:01:08 00:02:16 0.503
GB128_dither OH 24 00:01:08 00:02:19 0.493
GB127_dither OH 24 00:01:08 00:02:19 0.493
GB125_dither OH 20 00:00:57 00:02:12 0.432










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 12:30:08 21:41:59 0.576

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 1787:56:11 912:36:45 875:19:25 245:05:26 210:04:39 210:04:39 210:04:39 106:31:13
Observed 328:58:06
(18.40%)		 91:11:04
(9.99%)		 237:47:02
(27.17%)		 28:15:51
(11.53%)		 58:07:40
(27.67%)		 127:00:13
(60.46%)		 24:23:16
(11.61%)		 106:31:13
(N/A)
Remaining 1458:58:04
(81.60%)		 821:25:41
(90.01%)		 637:32:23
(72.83%)		 216:49:34
(88.47%)		 151:56:59
(72.33%)		 83:04:26
(39.54%)		 185:41:22
(88.39%)		 00:00:00
(N/A)











Camera status (2025/04/02)