48 million stars?

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chris
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48 million stars?

Post #1by chris » 11.01.2006, 23:59

A paper describing how to use 'photometric parallax' to estimate the distances to 48 million stars from the Sloan Digital Sky Survey:

http://www.arxiv.org/abs/astro-ph/0510520

I haven't read it yet, but I imagine that this is similar to the methods Pascal Harmann used to produce the 2 million star database from the Tycho catalog.

--Chris

MKruer
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Post #2by MKruer » 12.01.2006, 23:44

Good, only 399,952 Billion to go. :lol:

danielj
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Re: 48 million stars?

Post #3by danielj » 13.01.2006, 21:38

I think 48 millions stars will only work with not so much slowdown,with Geforce 6800 GT/GS with 256 MB.It is useless for most of the users,I think.

chris wrote:A paper describing how to use 'photometric parallax' to estimate the distances to 48 million stars from the Sloan Digital Sky Survey:

http://www.arxiv.org/abs/astro-ph/0510520

I haven't read it yet, but I imagine that this is similar to the methods Pascal Harmann used to produce the 2 million star database from the Tycho catalog.

--Chris

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t00fri
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Re: 48 million stars?

Post #4by t00fri » 13.01.2006, 21:58

danielj wrote:I think 48 millions stars will only work with not so much slowdown,with Geforce 6800 GT/GS with 256 MB.It is useless for most of the users,I think.

chris wrote:A paper describing how to use 'photometric parallax' to estimate the distances to 48 million stars from the Sloan Digital Sky Survey:

http://www.arxiv.org/abs/astro-ph/0510520

I haven't read it yet, but I imagine that this is similar to the methods Pascal Harmann used to produce the 2 million star database from the Tycho catalog.

--Chris


Why, I know many users with 256 MB card memory. After all the price is not much higher. I have 256 MB, too, since 3 years. But don't worry, we won't have 48 Million stars in Celestia all that soon ;-)

Bye Fridger

MKruer
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Post #5by MKruer » 14.01.2006, 22:19

If anyone read the text, the 48 million number is from only 5% of the sky, so if project in successful in the near future, we might have a catalog of the nearest billion stars.


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