|
 |
> Convert the Right Ascension and Declination to degrees. Place the star
a
> long distance away in the z direction. Rotate by -x*RA then y*Dec (or
is
> it -y*Dec).
It is worth mentioning that RA is measured in hh:mm:ss, so the way to
convert it to degrees is simply to multiply it by 15, i.e. ( hours +
( minutes / 60 ) + ( seconds / 3600 ) ) * 15
Declination is already in degrees, so no need to convert!
Post a reply to this message
|
|
|
|
"Jan Walzer" <jan### [at] lzer net> wrote in message
news:3d6bb97d$1@news.povray.org...
> > Q: which will render faster,
> > i) pow(10,6) spheres, or
> > ii) an isosurface of say the f_noise3d at low threshold and a huge
scale?
>
> you are joking, aren't you?
>
certainly there's got to be some crossover for
pow(10, n) spheres
vs.
an isosurface whose containment sphere contains roughly pow(10, n)
particles.
Post a reply to this message
|
|
