[Aavso-photometry] Need High-dec (B-V)~0 stars & Secondary Extinction Pairs (3 new additions for your lists);

[Daniel Majaess]

Hi, I've derived the local parameters for Halifax Nova Scotia by 
following an extinction pair across various values of airmass and the 
secondary coefficients appear to be essentially zero---especially in the 
visual band.  So I am now thinking of shifting gears and adopting the 
protocol outlined in Henden's book whereby a bunch of different stars 
(at varying airmass) with (B-V)~0 are imaged.  I was wondering if anyone 
had a list of high-dec, bright (7.5-9.5 mag) stars with a color (B-V)~0, 
and also they need to have well-defined visual and blue magnitudes so 
Hipparcos data will not cut it.   Any suggestions would be lovely =)

Also, here are some nice secondary extinction pairs that I am using and 
you may want to add to your respective lists.  I *believe* I got them 
from scanning through Dave Lane's ECU but I was sent a number of 
suggestions from wonderful AAVSO members =)  Anyways, here they are: 
HD96730 ( 11:06:52.69 +36:42:29.2 ), HD 97184 ( 11:16:01.55 +42:24:01.0 
), HD92454 ( 10:42:31.14 +68:34:22.2 ).

Many thanks,
Daniel.