[AstroPy] Heliocentric Velocity Correction

Scott Ransom sransom@nrao....
Tue Mar 13 14:58:06 CDT 2012

Hi Vivienne,

There are heliocentric velocity routines which have many of the major 
observatories in pyslalib (which wraps the GPL'd version of SLALIB). 
See the sla_earth routine for a description (and for a way of getting 
even more accurate values).



PS:  There is a _lot_ of other high-quality functionality in SLALIB 
(which is all wrapped by pyslalib) as well...

On 03/13/2012 03:24 PM, Vivienne Baldassare wrote:
> Is there a python function for calculating the heliocentric velocity
> correction?  I found one called helcorr.py in the Astrolibpy library but
> am curious if there is another one worth considering.  In particular, I
> noticed that the major observatories aren't in by default.  If this is
> the only one, is it worth me improving this one?
> Best,
> Vivienne Baldassare
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Scott M. Ransom            Address:  NRAO
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email:  sransom@nrao.edu             Charlottesville, VA 22903 USA
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