[AZ-Observing] Re: Delta Sco Fading

     alpha-2 Librae, the brighter star, is one of the 108 primary UBV
standard stars, for which the source paper (1954ApJ...120..196J) gives:
V = 2.75, B-V = 0.15, U-B = 0.08.  SInce these data define the system,
in principle you can't argue with them.
     Seems like a star such as tau Sco might be a better match in color,
in case there are color terms messing up the reductions.

\Brian
--
See message header for info on list archives or unsubscribing, and please 
send personal replies to the author, not the list.

Other related posts: