Author: Behrouz Safari
License: MIT

stelspec

A python package for retrieving and analysing stellar spectra (ELODIE-SOPHIE Archive)

Installation

Install the latest version of stelspec from PyPI:

pip install stelspec

Requirements are requests, numpy and pandas.

Quick start

Let's start by creating an Elodie instance by passing an object name:

import stelspec as sp

el = sp.Elodie('HD217014')

You can access two tables, CCF and Spectra, as pandas DataFrame.

# table: Cross-Correlation Functions
df_ccf = el.ccf()

# table: Spectra
df_spc = el.spec()

You can also download spectra as FITS file, whether in s1d or s2d format:

# download spectrum FITS file in s1d format
el.get_spec(dataset=19960831, imanum='0017', path='data/', s1d=True)

# download spectrum FITS file in s2d format
el.get_spec(dataset=19960831, imanum='0017', path='data/', s1d=Flase)

The same process can be done for Sophie, except that instead of dataset and imanum, you should pass the seq number.

For a brief help on the structure of FITS files, see ELODIE and SOPHIE.