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Re: Bug#842934: ITP: casacore-data-predict -- Earth orientation parameter prediction tables for casacore

Hi Jonathan,

the package will for sure only contain the prediction for one moment and
will be probably outdated when the package reaches the user. However, it
will come with a script that can fetch and convert the current data,
with the possibility to run this via cron or such. Therefore, the
package will have the current data, if the user needs it.

Best regards


On 02.11.2016 13:34, Jonathan Quick wrote:
> Hi Ole
> On Wed, November 2, 2016 2:07 pm, Ole Streicher wrote:
>> Package: wnpp
>> Severity: wishlist
>> Owner: Ole Streicher <olebole@debian.org>
>> X-Debbugs-CC: debian-devel@lists.debian.org, debian-astro@lists.debian.org
>> * Package name    : casacore-data-predict
>> * URL             : http://maia.usno.navy.mil/
>> * License         : Public domain
>>   Description     : Earth orientation parameter prediction tables for
>> casacore
>> The IERS Prediction tables provide predictions for the time-varying
>> orientation of the terrestrial reference frame within the quasi-inertial
>> celestial reference frame for casacore.
>> The package will contain the `IERSpredict` and `IERSpredict2000` tables
>> for casacore.
> These tend to be moving goal posts.  Post-analysis of VLBI sessions (and
> related space geodetic techniques) gives measurements of EOPs (which are
> unknown functions of time due to myriad torques applied to the earth by wind,
> ocean, other bodies, human activities etc.)  The predictions are just that, an
> estimate at a point in time of the future evolution of these parameters which
> is subsequently obsoleted by the actual measurements.  Hence packaging these
> predictions would be of little value, and by their nature, the further into
> the future one predicts, the less accurate they become.
> Regards
>   Jon
>> The package is a part of the effort taken by Benda Xu and me within the
>> Debian Astro team to split up the original "casacore-data" package (RFP
>> #761146) by data source into smaller packages which can be maintained
>> independently.
>> The package will be maintained on our git repository under
>> https://anonscm.debian.org/cgit/debian-astro/packages/casacore-data-predict.git
>> Best regards
>> Ole

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