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[vsnet-obs 7032] BL Lac CCD Obs Aug 19/20 (Tonny Vanmunster)



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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 (50s)
Differential magnitudes
------------------------------------------------------

Observations for August 19/20, 1997 [clear night; strong moonlight]

COMP1 = GSC 3206 1047 mag 12.8 approx 25" E of variable


MID-INT.       VAR-COMP1
TIME (JD)

680.3782        0.97
680.3791        1.00
680.3800        1.01
680.3810        0.98
680.3819        0.98
680.3828        0.97
680.3837        0.97
680.3847        0.98
680.3856        1.01
680.3865        0.98
680.3884        0.98
680.3893        1.01
680.3902        1.00
680.3911        0.98
680.3921        1.00
680.3930        1.00
680.3939        1.04
680.3948        0.97
680.3958        0.96
680.3967        0.95
680.3976        0.92
680.3986        0.95
680.3995        0.89
680.4004        0.94
680.4013        0.96
680.4023        0.97
680.4032        0.96
680.4041        0.94
680.4050        0.95
680.4060        0.86
680.4069        0.90
680.4078        0.92
680.4087        0.87
680.4097        0.84
680.4106        0.86
680.4115        0.84
680.4125        0.90
680.4134        0.88
680.4143        0.89
680.4152        0.82
680.4161        0.83
680.4171        0.76
680.4180        0.75
680.4189        0.79
680.4198        0.84
680.4208        0.89
680.4217        0.93
680.4227        0.94
680.4245        1.00
680.4254        1.03
680.4263        1.02
680.4272        1.01
680.4282        0.94
680.4291        0.93
680.4300        1.00
680.4309        1.01
680.4319        0.97
680.4328        0.99
680.4337        1.10
680.4347        1.03
680.4356        1.06
680.4365        1.09
680.4374        1.07
680.4384        1.06
680.4393        1.07
680.4402        1.07
680.4411        1.06
680.4421        1.07
680.4430        1.05
680.4439        1.08
680.4449        1.08
680.4467        1.04
680.4476        1.08
680.4486        1.04
680.4495        1.05
680.4504        1.06
680.4513        1.00
680.4522        1.03
680.4532        1.07
680.4541        1.09
680.4550        1.07
680.4560        1.05
680.4569        1.06
680.4578        1.03
680.4587        1.02
680.4596        1.00
680.4606        1.08
680.4615        1.09
680.4624        1.05
680.4634        1.11
680.4643        1.18
680.4652        1.16
680.4661        1.13
680.4671        1.17
680.4680        1.19
680.4698        1.18
680.4708        1.26
680.4717        1.24
680.4726        1.27
680.4735        1.19
680.4744        1.22
680.4754        1.22
680.4763        1.20
680.4772        1.21
680.4781        1.26
680.4791        1.26
680.4800        1.23
680.4809        1.24
680.4819        1.26
680.4837        1.29
680.4846        1.28
680.4856        1.31
680.4865        1.23
680.4874        1.27
680.4883        1.25
680.4893        1.23
680.4902        1.26
680.4911        1.17
680.4920        1.19
680.4930        1.18
680.4939        1.19
680.4948        1.17
680.4957        1.20
680.4967        1.16
680.4976        1.19
680.4985        1.20
680.4994        1.21
680.5004        1.14
680.5013        1.18
680.5022        1.15
680.5031        1.17
680.5041        1.15
680.5050        1.17
680.5059        1.11
680.5069        1.18
680.5078        1.13
680.5087        1.20
680.5096        1.19
680.5106        1.10
680.5115        1.13
680.5124        1.08
680.5133        1.10
680.5143        1.08
680.5152        1.03
680.5161        1.06
680.5170        1.04
680.5180        1.00
680.5189        0.97
680.5198        1.05
680.5207        1.00
680.5217        0.97
680.5226        1.07
680.5235        1.06
680.5245        1.05
680.5254        1.05
680.5263        1.05
680.5272        1.07
680.5281        1.09
680.5291        1.03
680.5300        1.01
680.5310        1.07
680.5319        1.09
680.5328        1.14
680.5337        1.13
680.5346        1.15
680.5355        1.09
680.5365        1.12
680.5374        1.10
680.5383        1.09
680.5392        1.11
680.5402        1.08
680.5411        1.04
680.5420        1.17
680.5430        1.13
680.5439        1.10
680.5448        1.13
680.5457        1.08
680.5467        1.05
680.5476        1.12
680.5485        1.13
680.5494        1.10
680.5503        1.16
680.5513        1.18
680.5522        1.13
680.5531        1.09
680.5541        1.14
680.5550        1.15
680.5559        1.15
680.5568        1.18
680.5578        1.21
680.5587        1.16
680.5596        1.19
680.5605        1.13
680.5615        1.16
680.5624        1.19
680.5633        1.16
680.5642        1.19
680.5652        1.08
680.5661        1.12
680.5670        1.17
680.5680        1.15
680.5689        1.14
680.5698        1.13
680.5707        1.08
680.5717        1.20
680.5726        1.10
680.5735        1.19
680.5744        1.21
680.5754        1.15
680.5772        1.18
680.5781        1.20
680.5790        1.16
680.5800        1.20
680.5818        1.20
680.5828        1.20
680.5837        1.16
680.5846        1.25
680.5855        1.20
680.5865        1.25
680.5874        1.20
680.5883        1.23
680.5892        1.25
680.5902        1.27
680.5911        1.33
680.5920        1.27
680.5929        1.33
680.5939        1.28
680.5948        1.38
680.5957        1.25
680.5966        1.27
680.5976        1.33
680.5985        1.39
680.5994        1.36
680.6003        1.43
680.6013        1.42
680.6022        1.35
680.6031        1.34
680.6040        1.40
680.6050        1.39
680.6059        1.44
680.6077        1.39
680.6087        1.41
680.6105        1.45
680.6115        1.39
680.6124        1.43
680.6133        1.41
680.6142        1.40
680.6151        1.43
680.6161        1.42
680.6170        1.46
680.6179        1.44
680.6188        1.45
680.6198        1.46
680.6207        1.44
680.6216        1.48
680.6225        1.42
680.6244        1.43
680.6253        1.49
680.6263        1.44
680.6272        1.44
680.6281        1.50
680.6290        1.49
680.6300        1.42
680.6309        1.46
680.6318        1.43
680.6327        1.35
680.6337        1.40
680.6346        1.36
680.6364        1.47
680.6373        1.46
680.6383        1.48
680.6392        1.54
680.6401        1.41
680.6420        1.46
680.6429        1.41
680.6438        1.43
680.6448        1.41
680.6457        1.42
680.6475        1.49
680.6485        1.55
680.6494        1.52
680.6503        1.46
680.6512        1.50

EOF