aesop#
aesop
is a data reduction toolkit for echelle spectra from the Astrophysical
Research Consortium (ARC) 3.5 m Telescope Echelle Spectrograph (ARCES) at Apache Point
Observatory (APO). You can view the source code and submit issues via GitHub.
Contents:
What is aesop
?#
In the interest of reproducing established results, we choose not to
re-implement the canonical IRAF reduction routine
ReduceARCES.cl,
and to limit aesop
’s functionality to processing after the aperture
extraction and initial wavelength solution.
The current version of aesop
is useful for the following tasks:
Managing and manipulating spectra with convenient data structures (
EchelleSpectrum
,Spectrum1D
)Removing radial velocities from echelle orders via cross-correlation with PHOENIX model spectra
Normalizing out the blaze-function in each echelle order given observations of a spectroscopic standard
Further normalizing each order for a flat continuum with robust least-squares
Concatenating the spectra in each order, and taking the mean between adjacent orders where they overlap, to produce a 1D spectrum from 3000-10000 Angstroms
Typical Workflow#
In general, aesop
users will follow this procedure:
Install
aesop
Run the
ReduceARCES.cl
IRAF script to reduce your echelle spectra (see IRAF)Open the extracted 1D spectra for each spectral order with
aesop
(see Getting started)