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[vsnet-obs 6918] BL Lac obs Aug 17/18 (Tonny Vanmunster)
- Date: Tue, 19 Aug 1997 00:02:18 +0200 (MET DST)
- To: vsnet-obs@kusastro.kyoto-u.ac.jp
- From: Tonny Vanmunster <tvanmuns@innet.be>
- Subject: [vsnet-obs 6918] BL Lac obs Aug 17/18 (Tonny Vanmunster)
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Dear colleagues,
Following are some unfiltered CCD observations of BL Lac,
obtained on August 17/18, 1997 at CBA Belgium Observatory,
using a 0.25-m f/6.3 SCT and ST-7 CCD, under very unfavourable
conditions (hazy sky, bright moonlight). BL Lac varied between
mag 13.9 and mag 14.2 (unfiltered) as one may derive from
the light curve below.
Kind regards,
Tonny Vanmunster
------------------------------------------------------
PHOTOMETRIC CCD OBSERVATIONS OF BL Lac
------------------------------------------------------
CENTER FOR BACKYARD ASTROPHYSICS (CBA) BELGIUM
Observer : Tonny Vanmunster, Landen, Belgium
Internet: tvanmuns@innet.be
Instruments: 0.25-m f/6.3 SCT , ST-7 SBIG CCD
unfiltered exposures (40s)
Differential magnitudes
------------------------------------------------------
Observations for August 17/18, 1997 [hazy, bright moonlight]
COMP1 = GSC 3206 1047 mag 12.8 approx 25" E of variable
COMP2 = GSC 3206 873 mag 13.7 approx 2' NE of variable
MID-INT. VAR COMP1 COMP2 VAR-COMP1 VAR-COMP2
TIME (JD)
--------- --- ----- ----- --------- ---------
678.3756 -10.01 -10.89 -10.17 0.89 0.16
678.3780 -9.97 -10.89 -10.13 0.92 0.16
678.3788 -9.91 -10.87 -10.15 0.96 0.24
678.3796 -10.17 -11.09 -10.34 0.92 0.17
678.3804 -9.98 -10.92 -10.21 0.94 0.23
678.3820 -9.97 -10.92 -10.18 0.95 0.22
678.3829 -9.90 -10.82 -10.12 0.92 0.22
678.3837 -9.98 -10.89 -10.14 0.90 0.15
678.3845 -9.91 -10.94 -10.16 1.03 0.25
678.3861 -9.92 -10.97 -10.26 1.05 0.34
678.3869 -9.96 -10.97 -10.23 1.01 0.28
678.3877 -10.04 -10.98 -10.25 0.94 0.21
678.3893 -9.96 -10.95 -10.22 0.98 0.26
678.3926 -9.87 -10.98 -10.23 1.11 0.37
678.3942 -9.87 -10.97 -10.22 1.10 0.35
678.3950 -9.92 -10.97 -10.27 1.05 0.35
678.4025 -9.97 -11.08 -10.42 1.11 0.44
678.4090 -9.84 -10.86 -10.11 1.02 0.27
678.4156 -10.02 -11.14 -10.39 1.12 0.37
678.4164 -10.02 -11.13 -10.34 1.11 0.32
678.4171 -9.80 -10.85 -10.12 1.06 0.33
678.4186 -9.95 -11.05 -10.31 1.10 0.36
678.4201 -10.03 -11.11 1.09
678.4209 -9.98 -11.12 -10.42 1.15 0.45
678.4234 -9.95 -11.03 1.08
678.4258 -9.78 -11.00 -10.20 1.22 0.43
678.4274 -9.90 -11.07 -10.30 1.17 0.40
678.4355 -9.75 -11.02 -10.33 1.26 0.57
678.4379 -9.78 -11.04 -10.35 1.26 0.57
678.4388 -9.87 -10.29 0.43
678.4404 -9.83 -11.07 -10.34 1.23 0.51
678.4412 -9.87 -11.08 -10.36 1.21 0.49
678.4420 -9.82 -11.02 -10.28 1.21 0.46
678.4428 -9.84 -11.07 -10.28 1.23 0.44
678.4436 -9.81 -11.04 -10.31 1.23 0.50
678.4444 -9.86 -10.99 -10.25 1.13 0.39
678.4452 -9.69 -10.89 -10.18 1.21 0.49
678.4460 -9.84 -11.10 -10.40 1.27 0.56
678.4469 -9.87 -11.03 -10.30 1.16 0.42
678.4477 -9.78 -10.93 -10.17 1.16 0.39
678.4485 -9.81 -11.00 -10.19 1.18 0.38
678.4501 -9.87 -11.02 -10.31 1.15 0.44
678.4525 -9.91 -11.01 -10.28 1.10 0.37
678.4550 -9.90 -11.07 -10.30 1.17 0.41
678.4566 -9.92 -11.07 -10.31 1.15 0.39
678.4574 -9.90 -11.14 -10.43 1.24 0.52
678.4582 -9.80 -11.01 -10.32 1.20 0.51
678.4590 -9.83 -11.02 -10.35 1.20 0.52
678.4606 -9.82 -11.07 -10.32 1.25 0.50
678.4614 -9.87 -11.02 -10.33 1.15 0.45
678.4623 -9.83 -11.04 -10.28 1.21 0.45
678.4630 -9.95 -11.13 -10.43 1.18 0.48
678.4639 -9.83 -10.99 -10.34 1.16 0.51
678.4647 -9.94 -11.06 -10.32 1.12 0.37
678.4663 -9.92 -11.08 -10.32 1.16 0.40
678.4703 -9.88 -11.07 -10.32 1.19 0.45
678.4711 -9.87 -11.07 -10.35 1.20 0.48
678.4720 -9.91 -11.10 -10.32 1.18 0.41
678.4728 -9.85 -11.03 -10.31 1.19 0.47
678.4736 -9.84 -11.05 -10.32 1.22 0.49
678.4752 -9.82 -11.07 -10.32 1.25 0.51
678.4760 -9.86 -11.03 -10.29 1.16 0.42
678.4777 -9.70 -10.83 -10.18 1.13 0.48
678.4784 -9.85 -11.08 -10.35 1.23 0.50
678.4825 -9.75 -10.95 -10.22 1.20 0.46
678.4841 -9.85 -11.07 -10.36 1.22 0.51
678.4920 -9.65 -10.81 -10.07 1.16 0.42
678.4927 -9.85 -11.09 -10.27 1.24 0.42
678.4935 -9.91 -11.09 -10.37 1.18 0.46
678.4942 -9.96 -11.10 -10.40 1.14 0.43
678.4949 -9.95 -11.08 1.13
678.4964 -10.01 -11.13 -10.38 1.12 0.38
678.4987 -10.01 -11.06 -10.34 1.05 0.33
678.4995 -9.98 -11.09 -10.32 1.11 0.34
678.5003 -9.91 -11.07 -10.33 1.17 0.42
678.5011 -9.94 -11.05 -10.32 1.11 0.38
678.5019 -10.10 -11.17 -10.40 1.07 0.30
678.5027 -9.91 -11.05 -10.29 1.14 0.38
678.5035 -9.93 -11.05 -10.34 1.13 0.41
678.5043 -9.99 -11.05 -10.35 1.06 0.36
678.5092 -9.96 -11.09 -10.39 1.13 0.43
678.5100 -9.97 -11.06 -10.35 1.08 0.37
678.5108 -9.94 -11.03 -10.32 1.10 0.38
678.5116 -9.92 -10.98 -10.33 1.07 0.41
678.5133 -9.89 -11.02 -10.30 1.14 0.42
678.5141 -9.95 -11.04 -10.36 1.09 0.41
678.5149 -9.95 -11.02 -10.36 1.07 0.41
678.5165 -9.96 -11.03 -10.36 1.07 0.40
678.5173 -9.93 -11.02 -10.35 1.09 0.42
678.5181 -9.98 -11.07 -10.39 1.09 0.42
678.5197 -10.00 -10.32 0.32
678.5205 -9.98 -11.03 -10.35 1.06 0.37
678.5213 -9.96 -11.03 -10.32 1.08 0.36
678.5222 -9.99 -11.04 -10.38 1.06 0.39
678.5238 -10.05 -11.09 1.04
678.5246 -9.95 -11.03 -10.31 1.08 0.36
678.5254 -9.95 -11.05 -10.32 1.10 0.38
678.5262 -10.03 -11.08 -10.39 1.05 0.37
678.5278 -9.91 -11.02 -10.32 1.11 0.41
678.5286 -10.01 -11.09 -10.39 1.07 0.38
678.5294 -10.12 -11.19 -10.45 1.07 0.34
678.5319 -9.94 -11.05 -10.34 1.11 0.40
678.5335 -9.87 -10.30 0.44
678.5351 -10.01 -11.11 -10.37 1.10 0.37
678.5359 -9.98 -11.03 -10.31 1.05 0.34
678.5367 -9.95 -11.05 -10.34 1.10 0.39
678.5375 -9.96 -11.03 -10.32 1.08 0.37
678.5384 -9.96 -11.06 -10.37 1.11 0.41
678.5400 -9.95 -11.06 -10.36 1.11 0.41
678.5408 -10.04 -11.12 -10.43 1.08 0.39
678.5416 -9.90 -11.03 -10.28 1.13 0.38
678.5424 -9.94 -10.36 0.42
678.5432 -9.93 -10.29 0.36
678.5448 -9.87 -11.05 -10.28 1.18 0.41
678.5465 -9.94 -11.08 -10.34 1.15 0.40
678.5473 -9.92 -11.01 -10.31 1.10 0.39
678.5481 -9.95 -11.08 -10.35 1.13 0.40
678.5489 -9.85 -11.01 -10.33 1.15 0.48
678.5497 -9.93 -11.07 -10.40 1.14 0.46
678.5505 -9.99 -11.07 -10.41 1.08 0.42
678.5521 -9.87 -10.99 -10.33 1.13 0.47
678.5529 -9.89 -11.06 -10.36 1.17 0.47
678.5537 -9.85 -11.02 -10.34 1.17 0.49
678.5545 -9.93 -11.04 -10.36 1.11 0.44
678.5554 -9.92 -11.04 -10.33 1.12 0.41
678.5562 -9.92 -11.01 -10.30 1.09 0.39
678.5570 -9.90 -11.00 -10.33 1.10 0.43
678.5578 -9.95 -11.03 -10.30 1.08 0.36
678.5602 -9.88 -11.03 -10.33 1.16 0.45
678.5610 -9.96 -11.07 -10.30 1.11 0.33
678.5635 -9.90 -11.05 -10.32 1.15 0.41
678.5643 -9.92 -11.06 -10.30 1.14 0.38
678.5651 -9.92 -11.01 -10.27 1.09 0.35
678.5659 -9.86 -11.01 -10.24 1.15 0.39
678.5667 -9.88 -10.96 -10.27 1.08 0.39
678.5683 -10.00 -11.13 -10.39 1.13 0.40
678.5691 -9.97 -11.02 -10.32 1.05 0.35
678.5699 -9.96 -11.05 -10.31 1.09 0.35
678.5708 -9.97 -11.03 -10.34 1.06 0.37
678.5716 -9.95 -11.04 -10.35 1.09 0.40
678.5724 -9.89 -11.02 -10.31 1.13 0.42
678.5740 -9.80 -10.90 -10.14 1.10 0.35
678.5748 -9.88 -11.01 -10.27 1.13 0.39
678.5764 -9.88 -11.04 -10.28 1.15 0.40
678.5772 -9.93 -11.02 -10.34 1.09 0.41
678.5780 -9.93 -11.00 -10.33 1.07 0.40
678.5789 -10.00 -11.10 -10.37 1.10 0.37
678.5797 -9.99 -11.07 -10.39 1.08 0.39
678.5821 -9.86 -11.00 -10.30 1.14 0.44
678.5829 -9.88 -11.07 -10.33 1.20 0.45
678.5837 -9.86 -10.99 -10.28 1.14 0.42
678.5845 -9.88 -11.09 -10.32 1.21 0.44
678.5861 -9.83 -10.98 -10.26 1.16 0.43
678.5878 -9.81 -10.98 -10.26 1.18 0.46
678.5886 -9.80 -11.04 -10.32 1.24 0.53
678.5894 -9.85 -11.05 -10.29 1.20 0.44
678.5902 -9.74 -10.97 -10.24 1.23 0.50
678.5934 -9.83 -11.04 -10.28 1.21 0.45
678.5942 -9.82 -11.00 -10.28 1.18 0.46
678.5950 -9.78 -10.97 -10.26 1.19 0.49
678.5959 -9.76 -10.95 -10.25 1.19 0.50
678.5967 -9.83 -11.01 -10.28 1.18 0.44
678.5975 -9.78 -10.99 -10.29 1.21 0.51
678.5983 -9.78 -11.00 -10.33 1.22 0.55
678.5999 -9.81 -11.02 -10.27 1.21 0.46
678.6007 -9.72 -10.97 -10.27 1.25 0.55
678.6015 -9.68 -10.93 1.25
678.6023 -9.74 -10.96 -10.28 1.22 0.55
678.6031 -9.75 -10.98 -10.28 1.24 0.53
678.6040 -9.77 -11.01 -10.25 1.24 0.48
678.6048 -9.78 -10.98 -10.27 1.19 0.49
678.6056 -9.78 -10.98 -10.29 1.20 0.51
678.6064 -9.76 -10.98 -10.28 1.22 0.53
678.6072 -9.81 -10.99 -10.28 1.18 0.47
678.6088 -9.76 -10.97 -10.25 1.21 0.48
678.6096 -9.82 -10.99 -10.28 1.17 0.46
678.6104 -9.79 -10.98 -10.24 1.20 0.46
678.6113 -9.80 -10.99 -10.24 1.19 0.44
678.6121 -9.87 -11.08 -10.28 1.21 0.41
678.6137 -9.84 -11.04 -10.26 1.20 0.42
678.6145 -9.90 -10.29 0.39
678.6161 -9.77 -10.99 -10.24 1.22 0.46
678.6169 -9.77 -10.96 -10.24 1.19 0.47
678.6177 -9.84 -11.02 -10.25 1.18 0.42
678.6185 -9.81 -11.06 -10.24 1.25 0.43
678.6193 -9.85 -11.03 -10.28 1.18 0.43
678.6202 -9.84 -11.03 -10.25 1.19 0.41
678.6218 -9.87 -11.03 -10.27 1.16 0.40
678.6226 -9.85 -10.99 -10.28 1.15 0.44
678.6242 -9.88 -11.07 -10.34 1.19 0.46
678.6250 -9.87 -11.01 -10.26 1.14 0.39
678.6266 -9.86 -10.97 -10.31 1.11 0.45
678.6283 -9.83 -11.03 -10.30 1.20 0.47
678.6291 -9.79 -10.93 -10.27 1.14 0.47
678.6299 -9.86 -11.02 -10.28 1.16 0.42
678.6307 -9.84 -10.98 -10.27 1.14 0.43
678.6315 -9.88 -11.01 -10.30 1.13 0.42
678.6323 -9.87 -11.00 -10.26 1.13 0.38
678.6331 -9.87 -11.01 -10.30 1.13 0.42
678.6339 -9.81 -10.95 -10.24 1.14 0.42
678.6347 -9.83 -10.96 -10.22 1.14 0.40
678.6355 -9.84 -11.00 -10.24 1.16 0.40
678.6364 -9.83 -10.98 -10.26 1.15 0.43
678.6372 -9.83 -10.97 -10.24 1.14 0.41
678.6380 -9.83 -10.96 1.13
678.6388 -9.88 -11.00 1.12
678.6396 -9.78 -10.93 -10.23 1.15 0.45
678.6404 -9.85 -11.01 1.15
678.6412 -9.84 -10.97 1.14
678.6420 -9.79 -10.97 -10.23 1.18 0.44
678.6428 -9.84 -10.95 1.11
678.6436 -9.81 -10.99 -10.22 1.18 0.41
678.6445 -9.80 -10.94 -10.22 1.14 0.42
678.6469 -9.80 -10.95 -10.23 1.15 0.43
678.6477 -9.77 -10.92 -10.22 1.15 0.45
678.6493 -9.76 -10.95 1.19
EOF