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[vsnet-obs 5594] April 21, CCD, JLT



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PHOTOMETRIC CCD OBSERVATIONS OF VARIABLE STARS
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CENTER FOR BACKYARD ASTROPHYSICS  (CBA) DENMARK
Observer   :  Lasse Teist Jensen
Address     : Suhrs Alle 5, DK - 3520 Farum , Denmark
E-mail        : ltj@tt.dk
CBA Denmark Page: http://vsnet.astro.columbia.edu/~cba/dk
Instruments:  0.25-m f/6.3 SCT , ST-6 SBIG CCD

Dear Colleagues,

Selected CCD results:

0940+45      DV UMA     2450555.3375   1997-04-16   0.8375      16.51,
eclipse timing
0940+45      DV UMA     2450555.4222   1997-04-16   0.9222      16.18,
eclipse timing

0940+45      DV UMA     2450555.5083   1997-04-17   0.0083      <16.0,
eclipse timing
0940+45      DV UMA     2450555.5097   1997-04-17   0.0097      <16.0

0940+45      DV UMA     2450557.3986   1997-04-18   0.8986      <16.0
0940+45      DV UMA     2450557.4000   1997-04-18   0.9000      <16.0,
eclipse timing
0940+45      DV UMA     2450557.4013   1997-04-18   0.9013      <16.0

0940+45      DV UMA     2450557.4868   1997-04-18   0.9868      <16.0,
eclipse timing
0940+45      DV UMA     2450557.4881   1997-04-18   0.9881      <16.0

Superhumps still visible.
DV UMa is getting harder to observe. DV UMa is getting fainter and the
full moon decreases the contrast.

1048+30      SX LMI     2450555.3083   1997-04-16   0.8083      14.5
1930+31      V795 CYG   2450555.5618   1997-04-17   0.0618      14.7
1556+33      VAR21 CRB  2450555.5520   1997-04-17   0.0520      <17.2
1621+39      VAR43 HER  2450555.5555   1997-04-17   0.0555      <16.5

Regards 

Lasse Teist Jensen (JLT)