(cba:news) v2491 cyg, redux
jop at astro.columbia.edu
Thu Jun 5 15:58:28 EDT 2008
I think V2491 Cyg is around 14th mag now - but have a look and see. The
color is pretty red (from interstellar absorption), and so you could
consider a red filter. When it gets much fainter, you'll be driven to
unfiltered observation... and it's even possible that's required now.
As usual, our interest is the TIME SERIES (to study for periodic
signals) - but if you do use a standard filter, observe a standard star
so we can calibrate the observation.
Good luck with this one!
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