Re: [nbos] Star Chart Base Data Release.Nyrath the nearly wise Mon Jun 13th, 2011
On 6/13/2011 2:59 PM, Robert Graham wrote:
> This is from memory Dalton, I can't find the original Excel database which
> had a lot of the original calculation data..
> But it is
> x = Distance * cos(RA) * Cose(Dec)
> y = Distance * sin(Dec)
> z = Dist * Cos(Dec) * Sin(RA)
> where distance = r in the table.. from memory.. It's been a while and I did
> it from a set of books etc I've been trying to find my old excel file.
The full equations are here
there are a couple of star catalogs here
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