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How to View SDSS data base?
I am looking for tutorial or help to access SDSS data / images.
I would like to select an (ra, dec) pair with say 1 arc minute view, then, list quasars within the field of view. I got SIMBAD to almost do this, but there were 4,000 object locations plotted and I couldn't get it to just display the dozen or so quasars within the field that I am interested in....so it was very difficult to see which were the qso's and which were the myriad other object positions. I tried to use the otype = 'qso' command but couldn't get it to work. Is there a youtube tutorial? I'm reading the so called tutorials for sdss and simbad, but haven't found how to do what I want yet and have tried a bunch of things. Thanks for suggestions, rt |
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How to View SDSS data base?
On Monday, December 26, 2016 at 12:24:34 PM UTC-5, wrote:
I am looking for tutorial or help to access SDSS data / images. I would like to select an (ra, dec) pair with say 1 arc minute view, then, list quasars within the field of view. I got SIMBAD to almost do this, but there were 4,000 object locations plotted and I couldn't get it to just display the dozen or so quasars within the field that I am interested in....so it was very difficult to see which were the qso's and which were the myriad other object positions. I tried to use the otype = 'qso' command but couldn't get it to work. Is there a youtube tutorial? I'm reading the so called tutorials for sdss and simbad, but haven't found how to do what I want yet and have tried a bunch of things. Thanks for suggestions, rt Sounds like you want to do a CasJob, a.k.a. an SQL query. The SDSS website has extensive tutorial material on exactly how to do this, together with quite a few exercises; a good place to start is he http://skyserver.sdss.org/dr13/en/he...roduction.aspx And one of the sample SQL Queries may be almost exactly what you want. |
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