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List:       kstars-devel
Subject:    Re: [Kstars-devel] 1e8 stars in KStars
From:       Jason Harris <kstars () 30doradus ! org>
Date:       2008-09-08 17:59:52
Message-ID: FB08BCD0-9DF6-48E0-BB7A-DE989D396FD7 () 30doradus ! org
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Akarsh!   that is so incredibly cool.  I cannot wait to try it out!

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.

regards,
Jason

On Sep 8, 2008, at 8:56 AM, Akarsh Simha wrote:

> Hi
>
> I managed to create the 1e8 star catalog binary file today, with the
> new utilities I commited today. It took really shorter than expected
> to create the binary. After some bugfixes to the code, KStars seems to
> be displaying stars to ~ 16.5 magnitude without any trouble.
>
> The compressed binary data is about 1.2 GB in size, and I will try to
> put it up on GHNS tomorrow. I expected it to be much smaller than 1.2
> GB. Any suggestions on better compression etc.? Would it be a good
> idea to split the catalog by latitude, or to split it into smaller
> magnitude ranges?
>
> KStars slows down to a good extent with a reasonable star density at
> large zoom levels into the Sagittarius star cloud! Probably it is
> worth optimizing the draw loop and I'll try to work on that as well
> this week.
>
> Here's a screenshot to keep everyone on their toes. This one is from
> the core of the Milky Way in Sagittarius with a Star Density of about
> 40% on the slider. :)
>
> Regards
> Akarsh
> [Very excited to see so many stars]
>
> <USNO- 
> NOMAD 
> -1e8_Sagittarius_Core 
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