[vsnet 847] Magnitude sequence around the Ring Nebula

[bas@lowell.edu (Brian Skiff)]

     Along with the recent series of sequences for variable stars, I have also
produced a skeleton sequence around the Ring Nebula (Messier 57 = NGC 6720)
principally for the use of visual deep-sky observers.  The stars were observed
with the 53cm Lowell telescope as usual, but only on a single night each (on
four different nights), and range between 8.7 < V < 14.6.  All the details,
including a labelled chart from a DSS image, can be found at Tom Polakis' Web
site, at the URL:

http://www.goodnet.com/~polakis/M57/M57.html

'VSnet' folks may find this useful for calibrating CCDs, educational purposes,
and so on.  Comments welcome.

\Brian Skiff  (bas@lowell.edu)

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