[vsnet-alert 9092] Re: [AAVSO-DIS] Var CAS 06 - fading
Bjorn H. Granslo
b.h.granslo at astro.uio.no
Thu Nov 2 06:02:50 JST 2006
Keith Geary wrote on Nov 1, 2006:
> Is there a formal chart out there that we can observe this object ??
No formal charts have yet been made but a NAS.VSS sequence is available:
http://www.astro.uio.no/~bgranslo/sequence/Var_Cas_2006.seq . The
photometry (V magnitudes and B-V colours) are based on Lausanne General
Catalogue of Photometric Data [GCPD], The Tycho-2 catalogue w/Bessell
[TYC2] and The Amateur Sky Survey Mark IV system [TASS]. The V magnitudes
should be correct to within 0.1 mag. for all sequence stars.
Mike Linnolt wrote on Nov 1, 2006:
> I made a visual estimate of this variable using Tycho2+Bessell comp stars
> v=8.98,9.67 and it appears to have faded rather quickly from the earlier
> estimates.
>
> YYYYMMDD(UT) mag observer
> 20061101.378 9.2 LMK
I can confirm the rapid fading of Tago's new variable star in Cassiopeia.
My visual observations using the NAS.VSS sequence:
YYYYMMDD(UT) Mag Obs Instrument Pogson step estimates
20061101.033 8.6 GRL 15.2-cm refl. (44x) D-5;E=V;F+5 (class 1)
20061101.735 9.3 GRL 7.0-cm refr. (60x) F-3;G+3;H+5 (class 1)
Yours sincerely
Bjorn H. Granslo (GRL)
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