Next message: Jim Thompson: "Re: Backyard winter sextant observatory?"
Alex wrote:
> One of my Russian books has the following tables, specially
> designed for determination of the instrumental correction.
> It lists uncorrected distances from the Polar star to
> 6 other stars at distances 16, 34, 43, 51, 60 and 81 degrees.
> (These stars are Kochab, Alioth, Capella, Vega, Alpheratz,
> and Altair).
> And then it gives 6 tables (one for each star) for
> the refraction correction. The entry in these tables uses
> altitude of the star and latitude.
Alex
I think that gives me all the information I need to calculate the true
distances myself, and correct separation for refraction. I neglected to
copy the refraction formula from the Meesus you loaned me, so that formula
would be appreciated.
Thanks
Bill
