[vsnet-chat 2774] Re: [AAVSO-DIS] XTE 1118+480 field star photometry

[Lew Cook <lcoo@yahoo.com>]

The spectral class of the 10.9 star is shown on my display (TheSky)
as B9IV. A b-y of 0.33 seems a bit red for such an early star, and I
wouldn't expect much reddening that far out of the galactic plane.
Any thoughts?
Lew
--- Brian Skiff <bas@lowell.edu> wrote: (snipped)
>      I had a chance to make some fairly quick observations of stars
> in the XTE 1118+480 field as a check on the zero-point there
>      Overall the AAVSO preliminary chart is roughly correct,
> particularly star "109" = GSC 3451-1612
> 
> Name                V     b-y    Remarks
> XTE 1118+480      12.95   0.06   +/-0.04; 2000 Apr 4.242 UT
> HD 98075           7.85   0.65 
> GSC 3451-1612     10.96   0.33   +/-0.02
> GSC 3451-0938     12.98   0.63   +/-0.04
> 

=====
Regards, Lew 
=== Try Lew's instant automatic observation plotter. 
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and the observations are automatically plotted.
Autoplot.xls (an Excel spreadsheet) is freeware. 
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