[Aavso-photometry] Help locating Article

[Arne Henden]

ADS should permit downloading of a 2000-era article without
requiring "subscribing institution" status.  You have tried
there, right?
   We've done spot filter work here as well for astrometry;
it decreases the target brightness enough so that you can
measure it with respect to a surrounding fainter reference
frame.  We used a more expensive solution, though - an aluminum
spot deposited on clear glass.  See the ND9 program description
in Dahn, "Review of CCD parallax measurements", IAU Symposium 189,
1998, p19.  Ron Stone used the camera on the 1.0m to look at
the satellites of Mars during last year's opposition; Chris
Tycner on our staff is using it to do photometry of bright
Be stars.  You have to be really careful with spots; they often
have nonuniform density, are hard to flatfield, and have to
be positioned accurately.
Arne


Tim Crawford wrote:
> Trying to locate a copy of the following article:
> 
> A Search for Planetary Transits of the Star HD 187123
> by Spot Filter CCD Differential Photometry
> 
> Castellano, T. 2000, PASP,112,821C
> 
> Can anyone help with this search?  Apparently PASP
> will not let me download as I am not a  member of a
> "subscribing institution."
> 
> CS 
> 
> 
> Tim Crawford (CTX)
> 
> 
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