Re: [Celestia-developers] Milky Way template reversed?

[Fridger S. <fri...@de...>]

Selden,

yes I am aware of this and the respective literature, of course. The fix
of the MW orientation is part of my forthcoming commit to CVS.

Bye Fridger

Selden E Ball Jr wrote:
> This was reported by "ebracum45" in the Forum posting at
> http://www.shatters.net/forum/viewtopic.php?t=10310&
> but that posting may have been overlooked.
>
> It seems that the template for the Milky Way image may have
> gotten reversed.
>
> Looking down from Galactic North in Celestia, so that the SMC and LMC
> are more distant from the viewpoint than the Milky Way,
> the image in Celestia shows the arms farther apart 
> as galactic longitude decreases. That is, they open clockwise.
>
> However, the standard plots of the Milky Way arm structure show the arm 
>
> separation increasing with increasing longitude: the arms open 
>
> counter-clockwise.
>
> See, for example, the plot at
> http://cfa-www.harvard.edu/~reid/background.html
> which is taken from Georgelin and Georgelin (1976).
>
> A more recent study (including color plots) is
> http://arxiv.org/pdf/astro-ph/0605728
> The Spiral Structure of the Outer Milky Way in Hydrogen (2006)
> Authors: E.S. Levine, Leo Blitz, Carl Heiles
>
>
> s.
>
>
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