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[vsnet-obs 15462] Observations September 18 and 20
- Date: Mon, 21 Sep 1998 09:30:31 -0700
- To: vsnet-obs@kusastro.kyoto-u.ac.jp
- From: reinder j bouma <rjbouma@wxs.nl>
- Subject: [vsnet-obs 15462] Observations September 18 and 20
- Reply-To: rjbouma@wxs.nl
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
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Reinder J. Bouma email: rjbouma@wxs.nl
Bekemaheerd 77 phone: +31 (0)50-5418227
9737PR Groningen
The Netherlands
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Variable star observations for September 18 and 20.
Observer: Reinder J. Bouma (AAVSO-code BMU).
Instruments: 25.4-cm Jones-Bird reflector and 10x50B.
Sequences: AAVSO, unless noted otherwise.
Object Date Mag code remarks
ANDZ 980920.812 10.8 BMU
ANDRX 980920.832 14.3 BMU *see note
CAMZ 980920.806 12.4 BMU
CASUV 980920.809 11.1 BMU seq H/T
CASV723 980920.814 12.6 BMU
CRBR 980918.872 8.3 BMU seq H/T
CRBR 980920.802 8.3 BMU seq H/T
CRBT 980920.801 10.3 BMU
CYGchi 980920.85 8.1 BMU
CYGSS 980920.799 11.9 BMU
CYGDD 980920.86 10.1 BMU seq Skiff
CYGV482 980920.800 10.9 BMU
DRAAG 980920.826 9.9 BMU
OPHRS 980920.794 11.7 BMU
PEGRU 980920.849 12.7 BMU
PERS 980920.842 12.9 BMU
PERDY 980920.844 12.9 BMU seq VSNET
PERGK 980920.847 13.1 BMU
SCTR 980920.810 5.3 BMU
SGEV 980920.797 10.9 BMU
UMIZ 980920.808 11.5 BMU
VULPU 980920.797 11.6 BMU
* NOTE comparison stars 139 and 146 of revised AAVSO seq of 10/96.
This sequence has a zero point error of 0.2-0.3 magnitude, and contains
one or two serious errors, though. Use of nearby 145 gives an estimate
of 147 (!), and use of Lasker photometry gives 140-141. Same Lasker stars
suggest that 145 actually is 139, and should be better used as 141 to make
it fit into the rest of the sequence.
It appears to me that some of the recent 'fluctuations' may at least partly
be related to use of that poor 145!
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