[AstroPy] HTM ID Tools in Python

Erin Sheldon erin.sheldon at gmail.com
Wed Sep 24 14:18:56 EDT 2014

On 9/24/14, Kaustubh Waghmare <kaustubh.waghmare at gmail.com> wrote:
> Hi Erin,
> Thank you so much for the prompt reply. I have raised an issue as suggested
> by you.
> While I am at it, let me be a little more greedy ;) and ask mote questions
> -
> * Am I right in understanding that there is not straightforward class
> method which can accept an RA, DEC and radius and output all HTM ID ranges
> which will enable doing a cone search on a database for which HTM IDs have
> been populated?

Kaustubh -

the match() code uses that internally (it is called "intersecting");
it would be straightforward to expose this to python.  Please raise
another issue for that :)

> * If yes, can you point to any literature / resource which will help me
> come up with such a code? So, in other words I am trying to code something
> of the form "ConeSearch_withHTMid(ra, dec, radius)"? I believe this is
> already being achieved by the API at www.skyserver.org but unfortunately,
> as I understand, this works only for SQL Server 2005. This is explained at
> the following page:
> http://www.skyserver.org/HTM/HtmAPI/html/index.html
> Thanks once again for all the help.
> Cheers,
> Kaustubh

Erin Scott Sheldon
Brookhaven National Laboratory erin dot sheldon at gmail dot com

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