Re: [nbos] Help with csv file creation.
"Robert Graham"
Thu Mar 8th, 2007
try my cats on the shared area of nbos stuff, i could do it on the x,y, but
it takes a bit of computing power i've been nice in the past but it does
mean that the pc is tied down for close to an hour or so while it runs the
scripts to produce the files, if i read what you are after right you would
want me to run something like this on the program

while z is greater then -1000 but less then 1000 and y is greater then -400
and less then 400 and x is greater then -400 and less then 400 then dump to
the file.

as to Nyrath's reply: Actually the latest star cats go out to about 10,000
LY from earth, the files that I uploaded to Nbos are done from the Europian
Space Agencys updates of the Hip cat and a few others.

To get the data in x,y,z you just have to convert the right ascension etc
data which well there are pleanty of sites online that tell you how to
convert the data.

-Rob

----- Original Message -----
From: "Nyrath the nearly wise" <nyrath-at-projectrho.com>
To: <nbossoftware-at-nbos.com>
Sent: Thursday, March 08, 2007 2:07 PM
Subject: Re: [nbos] Help with csv file creation.


> Joseph West wrote:
>> I was wondering if any of you had a site and/or search that I could
>> gather
>> information from to create my own csv file. I need the stars that are
>> within 1,000 ly (+ and - Z) of Earth, as well as those that are 400 ly (+
>> and - X,Y) away from that line.
>
> I fear that there isn't an existing star catalogue
> with what you want.
>
> The most up to date catalog is the Hipparcos and Tycho Catalogues.
> They only go out to about 160 light years.
>
> http://cdsweb.u-strasbg.fr/viz-bin/Cat?I/239
>
> I also estimate that a rectangular solid of dimensions
> 2000 ly x 400 ly x 400 ly would contain approximately
> 784,000 stars
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>
>
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