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List:       kstars-devel
Subject:    Re: [Kstars-devel] 1e8 stars in KStars
From:       Médéric_Boquien <mboquien () free ! fr>
Date:       2008-09-08 18:25:55
Message-ID: 200809081425.55667.mboquien () free ! fr
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Hello Jason and Akarsh,

Le Monday 08 September 2008 13:59:52 Jason Harris, vous avez écrit :
> I think we may need to tweak how faint stars get drawn; they look
> pretty "muddy" at the moment...it's also interesting to see sharp
> "edges" in the colors of stars...my guess is that it's simply an
> artifact of the catalog itself.

Speaking of which, i played a bit with Stellarium over the weekend and i tried 
their 200×10⁶ stars catalogue. The result is not always pretty. See 
http://img57.imageshack.us/my.php?image=squareslv4.png for instance. We can 
see the tiles and the gradient in the colours. Apparently the NOAO B1.0 
catalogue gives magnitudes precise to 0.3 magnitude which is not very good. I 
fear kstars will run into the same sort of problems. Perhaps using the 2MASS 
catalogue could be used to circumvent the problem?

Regards,

Médéric
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