[AstroPy] Reading in wavelength-calibrated spectra

[Kelle Cruz]

i'm guessing it's probably gonna be easiest to export spectrum from IRAF to
plain text (wspectext) and just use asciitable to read in.

kelle

On Tue, Aug 14, 2012 at 11:10 AM, Kevin Gullikson <
kevin.gullikson.signup at gmail.com> wrote:

> Hi,
>
> I have some spectra that were reduced in iraf, and I would like to read
> them in to python to do some fitting that I already have code for. However,
> I am having trouble reading in the wavelength calibration. The spectra are
> echelle, and the wavelengths are defined with this thing in the header that
> looks like this:
>
> "
> WAT2_001= 'wtype=multispec spec1 = "1 32 2 10672.221264362
> 0.086046403007761 20'
> WAT2_002= '46 0. 6.65 26.40 1. 0. 1 5 1. 2046. 10761.5346117191
> 87.998952480064'
> WAT2_003= ' -1.32409633589482 -0.0165054046288388 -0.00680394594704411"
> spec2 ='
> WAT2_004= ' "2 33 2 10348.8582697 0.083445037904806 2046 0. 34.60 58.07 1.
> 0. 1'
> WAT2_005= ' 5 1. 2046. 10435.4699172677 85.3379030819273 -1.2833101652519
> -0.01'
> WAT2_006= '53518242619121 -0.0057861452751027" spec3 = "3 34 2
> 10043.881872825 '
> ...
> "
>
> The numbers give the conversion from pixel coordinates to wavelength
> coordinates.
> I was wondering if there was a python function that could correctly read
> all that in, parse it, and give me a spectrum in flux vs wavelength? I have
> tried playing with pywcs but that seems only to work for images?
>
> Cheers,
>
> Kevin Gullikson
> _______________________________________________
> AstroPy mailing list
> AstroPy at scipy.org
> http://mail.scipy.org/mailman/listinfo/astropy
>
>


-- 
Kelle Cruz, PhD — http://kellecruz.com/
917.725.1334 — Hunter ext: 16486 — AMNH ext: 3404
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/astropy/attachments/20120814/d49e4ec3/attachment.html>