[vsnet-chat 2329] Re: GSC1.2 magnitudes near V844 Her

[Hazel McGee <HazelMcGee@compuserve.com>]

Dear all

Arne Henden wrote:

>>I've checked additional stars in the field, with
the following results:

   GSC       mag     V
3062-00050  14.09  14.08
3062-00281  12.80  12.83
3062-00347  13.59  13.61
3062-00173  12.30  12.31
3062-02129  13.53  13.49
3062-00607  12.50  12.51

So, remarkably, for this specific field, GSC1.2 magnitudes
closely follow V-band magnitudes.  This is highly
unusual!<<

Indeed it is!  I had also noticed this remarkable concurrence of the GSC
mags with Arne's, thanks to Guy Hurst who obtained the Henden magnitudes
and has created a sequence and chart for TA.

As Brian Skiff quite rightly pointed out however, the AAVSO charts dated
06/97, which are currently available on the AAVSO Web page, are *way, way*
out of line -- so bad in fact that no visual observer could possibly
believe them correct.  The following mags are given for these stars:

   GSC       mag     V          AAVSO
3062-00050  14.09  14.08    14.9  
3062-00281  12.80  12.83    14.1   (!!)
3062-00173  12.30  12.31    13.1
3062-00607  12.50  12.51    13.8

Something has obviously gone very wrong here -- if corrected charts cannot
be uploaded to the Web page quickly, to save confusion may I suggest that
at least the current charts should be removed.

Best regards
   Hazel McGee

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