[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Tycho-2, star catalogs in Debian, and the stardata-common policy

On 25/09/15 11:18, Ole Streicher wrote:
> Hi all,
> I am currently creating index file packages for the upcoming
> "astrometry.net" package from the Tycho-2 catalog [1][2]. The Tycho-2
> catalog is now DFSG-free (under BSD-2-Clause).
> The catalog is a comparably huge catalog: Containing 2.5 million stars, its
> uncomressed size is ~500 MB, with xz compression it is still 120 MB.
> I am now looking what is the most effective way to package this catalog. The
> simplest (and currently implemented) way would be to just have the catalog
> as source, and package the index files from there. If other programs need
> the catalog as input, I could just add the procedures to create them in
> debian/rules.
> There is also the "stardata-common" package that defines some standard way
> to handle the data. However, stardata-common seems to be quite old and not
> be used very widely (only for the "gliese" and "yale" catalogs, right?).
> There were some discussions about a Hipparcos catalog [3], but it seemed not
> to have packaged.
> Also, I have the feeling that stardata-common is not really applicable for
> me, since it is a huge download, while some people need only smaller index
> files (20 MB or so). Creating it on the fly also takes some time.
> So, I am wondering, what the status of the stardata-common package (and
> policy) is. Is is considered (almost) dead now (popconn=325, however)?
> Is there an interest to keep an unchanged version of Tycho-2 in a binary
> package? What about the Hipparcos catalog?
> Best regards
> Ole
> P.S. Kevin, Francisco and Noel: I added you to the list since you were
> involved in the stardata-common policy, or may have some interest in a
> Tycho-2 package. You could also consider becoming a member of the
> Debian-Astro team

Hi Ole,
I'm interested in this question since I wanted to package star catalogs
for stellarium a long time ago [1]. Although the interest faded, I'm afraid,
I'm still interested what one is supposed to do in such a case.

The approach in the mentioned bug was to have a script that downloads
the star catalog during installation, not having the catalog inside
DEB package. I'm currently redownloading the largest file to see how
well it compresses. I'm also unsure what the license of this file is.


PS. Happy 800,000th bug!

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=664457

Attachment: signature.asc
Description: Digital signature

Reply to: