[AstroPy] Status of Specutils?

Wolfgang Kerzendorf wkerzendorf@gmail....
Mon Jun 17 16:13:10 CDT 2013


Hi Kelle,

Specutils does not have much in it currently. We have a extinction class (for optical extinction) and we have (the beginnings of) a 1d spectrum class. The 1d Spectrum class needs some love as the WCS it currently uses needs to be ported over to the new astropy models class (which is supposedly going to be the base class for all). I haven't gotten around to do that yet, however that should not keep you or your students to provide stuff for the specutils package. 

I imagine building a equivalent widths model (using the existing 1d gauss model class, https://github.com/astropy/astropy/blob/master/astropy/modeling/functional_models.py) as a first step and playing around with using it with a fitter. The modelling package currently is in the late design phase so lots of people trying to build something with it, definitely is a good thing. your thoughts?


Hope that helps,
     Wolfgang

On 2013-06-17, at 4:56 PM, Kelle Cruz <kellecruz@gmail.com> wrote:

> Hi Astropy peeps,
> 
> I'm planning on having my summer students work on analysis of spectra. Pretty basic stuff like measuring equivalent widths and spectral indices (aka, ratios)…things that IRAF SPLOT does interactively. What's the status of the specutils package? Can we volunteer to be beta testers? Or should we be contributing code somewhere? Last summer we tried to use Sherpa, and that was a disaster (sorry Sherpa people who might be on this list).
> 
> thanks for any updates or advice. 
> 
> kelle, in constant pursuit of avoiding re-inventing the wheel
> 
> -- 
> Kelle Cruz, PhD — http://kellecruz.com/
> 917.725.1334 — Hunter: x16486 — AMNH: x3404
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