[vsnet-chat 1535] Re: [AAVSO-DIS] FG Sge sequence

[aah@nofs.navy.mil]

A quick comment on Robert Modic's sequence for the FG Sge field.
The coordinates for FG Sge itself, from my two nights of photometry,
should be:
   20:11:56.07  +20:20:04.8  (J2000)
using the USNOA-2.0 catalog.
  The star 8arcsec east of FG Sge was constant within measurement
errors, but the two nights of photometry were sequential nights,
and my data is not sufficient to rule out any long-term variation.
For FG Sge itself, here are the BV data points from the two nights:

        HJD        V     err    B-V    err
     51071.7446  15.635  0.010  2.429  0.020
     51072.7362  15.582  0.015  2.477  0.030
          
so Robert's comment that the variable is red is certainly correct!
The two data points required daophot and psf fitting in order to
separate FG Sge from its nebulae and from the bright companion.

Arne

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