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Sloan Digital Sky Survey Queries?


  07:29:39 pm, by Nimble   , 171 words  
Categories: Thoughts, Science

Sloan Digital Sky Survey Queries?

I had no idea that the data in the Sloan Digital Sky Survey was open to the public, but it is, and you can put your astronomy and database smarts together to help them find things, as well.

Because of the way their program has been put together, it's great at finding many kinds of objects, but sometimes does not recognize larger objects properly. So they are asking for help in finding HII regions, regions filled with ionized hydrogen.

There's a tutorial on how to put together database queries for the data, here's the SQL query tool, and the schema browser lets you look at the table structure, which has tables for ROSAT information, measured spectra, etc.

There's also a sky navigation tool that you can explore the sky with, and where you can input some of the coordinates from your queries to try a visual identification.

I'm impressed with the accessibility of the tools.

If my brain were less addled, I could certainly help them out in their HII quest :)

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