[vsnet-chat 5647] Re: [vsnet-id 707] V410 Cas position

[Arne Henden <aah@nofs.navy.mil>]

Yes, but Yamaoka-san was talking about the CV itself, not
the sequence stars (which are the x,y guys).  I don't remember
whether we just took the best literature values for the positions
in the main table or derived them from the new images, but in any
case I'll go back and check the astrometry now that B1.0 has
been released.  All of these coordinates agree to an arcsec or two
(except for the printed GCVS catalog, which should be avoided anyway),
so I don't see where there is any confusion.
   I doubt B1.0 can give RA,DEC to 35mas as you indicated in the
previous email; this is still photographic plate reductions with
errors in the 200mas range.
Arne

Brian Skiff wrote:
>      ...I just looked at the original Henden & Honeycutt paper:  they
> show only x,y offsets in arcsec from the variable.  So when the Strasbourg
> folks did the OCR scanning, they used (probably) the positions for the CVs
> shown in the paper to determine RA/Dec for the stars.  Since those positions
> were themselves not alwasy so good, then the star positions are going to
> be a bit fuzzy.
> 
> \Brian
> 
>

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