PRIME Observation Log 2026/02/15

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: 2026/02/15
Local observer:
Remote observer:
Weather:
Comment:
Detector Temperature: 112.00004 +- 0.00263 K
ImageAcquisitionErrors occurred 2 times @
2026-02-16 03:38:41 SAT
2026-02-16 05:17:51 SAT

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 19:50:18
Morning 05:51:42
Science Observation
(Sun altitude < -10°)
Start 20:12:59
End 05:29:00
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 02:54:02
End 05:29:00


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:09:25 09:16:00 0.988
GB Time 02:57:01 02:34:58 1.142
Non-GB Time 06:12:23 06:41:02 0.929


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 336 00:16:00 00:37:24 0.428
SAAO 714 00:34:02 02:20:06 0.243
GB 1268 01:00:26 02:57:01 0.341
OU 650 00:30:59 01:17:25 0.400
NASA 650 00:30:59 01:17:25 0.400
ABC 650 00:30:59 01:17:25 0.400


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
TWILIGHT 336 00:16:00 00:37:24 0.428
all_sky_grid 2664 02:06:59 06:12:23 0.341
Bulge 1220 00:58:09 02:46:38 0.349
SKY 48 00:02:17 00:10:23 0.220


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
test DY 12 00:00:34 00:05:31 0.103
FLAT OJ 320 00:15:15 00:31:04 0.491
field8263_test 12 00:00:34 00:05:28 0.104
field8263 60 00:02:51 00:06:51 0.417
field8264 60 00:02:51 00:09:49 0.291
field18003_test 12 00:00:34 00:12:26 0.046
field18030_test 16 00:00:45 00:12:40 0.060
field18030 60 00:02:51 00:06:03 0.472
field18031 60 00:02:51 00:06:00 0.476
field18032 60 00:02:51 00:06:22 0.448
field18033 60 00:02:51 00:06:26 0.444
field18034 60 00:02:51 00:06:16 0.456
field18035 60 00:02:51 00:06:22 0.448
field18036 60 00:02:51 00:05:46 0.495
field18037 60 00:02:51 00:06:00 0.476
field18038 60 00:02:51 00:06:56 0.412
field18039 60 00:02:51 00:05:52 0.487
field18342 60 00:02:51 00:06:17 0.455
field18343 60 00:02:51 00:06:39 0.429
field18344 60 00:02:51 00:06:03 0.472
field18345 60 00:02:51 00:06:11 0.462
field18346 60 00:02:51 00:06:17 0.455
field18347 60 00:02:51 00:06:06 0.469
field18348 60 00:02:51 00:06:03 0.472
field18349 60 00:02:51 00:05:46 0.495
field18350 60 00:02:51 00:06:03 0.472
field18351 60 00:02:51 00:06:08 0.465
field10270_test 24 00:01:08 00:07:55 0.144
field10270 60 00:02:51 00:06:42 0.426
field10271 60 00:02:51 00:06:36 0.432
field10272 60 00:02:51 00:06:34 0.435
field10273 60 00:02:51 00:06:36 0.432
field10274 60 00:02:51 00:06:20 0.451
field10275 60 00:02:51 00:06:56 0.412
field10276 60 00:02:51 00:06:17 0.455
field10277 60 00:02:51 00:05:49 0.491
field10278 60 00:02:51 00:05:43 0.499
field10279 60 00:02:51 00:06:28 0.442
field10566 60 00:02:51 00:05:43 0.499
field10567 60 00:02:51 00:06:57 0.411
field10568 60 00:02:51 00:06:30 0.439
field10569 60 00:02:51 00:05:40 0.503
field10570 60 00:02:51 00:06:34 0.435
field10571 60 00:02:51 00:06:00 0.476
field10572 60 00:02:51 00:06:20 0.451
field10573 76 00:03:37 00:08:43 0.415
field10574 60 00:02:51 00:05:43 0.499
field10575 60 00:02:51 00:08:23 0.341
field2104_test 64 00:03:03 01:02:40 0.049
GB83_test OH 80 00:03:48 00:27:14 0.140
GB83_dither OH 24 00:01:08 00:02:19 0.492
GB100_dither OH 24 00:01:08 00:02:21 0.485
GB117_dither OH 24 00:01:08 00:02:33 0.448
GB82_dither OH 24 00:01:08 00:02:39 0.430
GB99_dither OH 24 00:01:08 00:02:32 0.451
GB116_dither OH 24 00:01:08 00:02:19 0.493
GB81_dither OH 24 00:01:08 00:02:21 0.484
GB98_dither OH 24 00:01:08 00:02:38 0.432
GB115_dither OH 24 00:01:08 00:02:21 0.484
GB80_dither OH 24 00:01:08 00:08:40 0.132
GB97_dither OH 24 00:01:08 00:02:47 0.411
GB114_dither OH 24 00:01:08 00:02:21 0.484
GB79_dither OH 24 00:01:08 00:02:19 0.493
GB96_dither OH 24 00:01:08 00:02:52 0.398
GB113_dither OH 24 00:01:08 00:02:19 0.493
GB112_dither OH 24 00:01:08 00:02:21 0.484
GB95_dither OH 24 00:01:08 00:02:38 0.432
GB78_dither OH 48 00:02:17 00:04:41 0.488
GB77_dither OH 48 00:02:17 00:05:09 0.443
GB94_dither OH 48 00:02:17 00:04:57 0.462
GB111_dither OH 48 00:02:17 00:04:47 0.478
GB110_dither OH 48 00:02:17 00:05:03 0.453
GB93_dither OH 48 00:02:17 00:05:17 0.432
GB76_dither OH 48 00:02:17 00:05:11 0.440
GB75_dither OH 48 00:02:17 00:04:46 0.479
GB92_dither OH 60 00:02:51 00:18:59 0.151
GB109_dither OH 48 00:02:17 00:05:04 0.451
GB108_dither OH 24 00:01:08 00:02:29 0.458
GB91_dither OH 24 00:01:08 00:02:42 0.422
GB74_dither OH 24 00:01:08 00:02:46 0.412
GB73_dither OH 24 00:01:08 00:02:32 0.450
GB90_dither OH 24 00:01:08 00:02:35 0.440
GB107_dither OH 24 00:01:08 00:02:21 0.484
GB106_dither OH 24 00:01:08 00:02:30 0.456
GB89_dither OH 24 00:01:08 00:02:33 0.448
GB72_dither OH 24 00:01:08 00:02:47 0.411
GCsky 48 00:02:17 00:10:23 0.220
GB60_dither OH 24 00:01:08 00:03:34 0.319
FLAT_test OJ 4 00:00:11 00:00:47 0.239










Stats so far in 2026
Monthly observed fraction so far in 2026
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 55:55:01 259:31:55 0.215
Feb 46:39:48 135:25:17 0.345

Observed time so far in 2026
- Total time of each institute is calculated by the following
    [All observation time in 2026] = [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 2026] = [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 2026] = [All observation time in 2026] - [GB observation time in 2026]
    
    [OU, NASA, ABC time in 2026] = 0.24 x [Non-GB observation time in 2026]
    [SAAO time in 2026] = 0.28 x [Non-GB observation time in 2026]
    
- 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 1794:00:18 934:18:32 859:41:46 240:42:53 206:19:37 206:19:37 206:19:37 18:05:20
Observed 102:34:52
(5.72%)		 09:30:32
(1.02%)		 93:04:20
(10.83%)		 25:05:44
(10.43%)		 21:39:16
(10.50%)		 27:11:35
(13.18%)		 19:07:43
(9.27%)		 18:05:20
(N/A)
Remaining 1691:25:25
(94.28%)		 924:48:00
(98.98%)		 766:37:25
(89.17%)		 215:37:08
(89.57%)		 184:40:20
(89.50%)		 179:08:02
(86.82%)		 187:11:53
(90.73%)		 00:00:00
(N/A)











Camera status (2026/02/15)



Return to index
Previous day Next day