[Aavso-photometry] RE: [AAVSO-DIS] RE: AAVSO special notice 5 object

[Walt Cooney]

Thanks Brian.  I have copied the AAVSO-photometry group rather than discussion
since we have moved the discussion there.  I have to admit I thought about
jumping over to a standard star during my run but it was near dusk and I thought
it would be more worthwhile to get a longer, more sampled time series of the
object and get a calibration for a field star later.  Per Aaron's suggestion, I
have submitted just using the nominal GSC mag of 11.8 for the comp star.  The
data will have to be adjusted later when a more accurate calibration of the
field is performed.

-Walt

-----Original Message-----
From: Brian Skiff [mailto:bas at lowell.edu]
Sent: Sunday, February 12, 2006 2:10 PM
To: waltc at cox.net
Cc: aavso-discussion at mira.aavso.org
Subject: RE: [AAVSO-DIS] RE: AAVSO special notice 5 object


>>  Tom used the GSC star and I assume he used a magnitude for it
>>  of 11.8 which is what my friendly neighborhood planetarium
>>  program tells me.

     Tom identified the star as GSC 6826-0280, which the ASAS-3 database
shows is V = 11.96 +/- 0.06 from the mean of 340 observations.
I note this star is fairly red itself from the 2MASS J-K color of
1.39, and also an MSX detection.  The ASAS-3 data are flat enough,
however.
     There is plenty of photometry for relatively faint stars within
a couple degrees, so if it is clear (Tom certainly is) you can make a
quick zero-point check at least for V and B-V by going to one of
those fields.

\Brian