EchelleSpectrum

class chia.EchelleSpectrum(orders, header=None)

Bases: object

Echelle spectrum object, which stores each order as a Spectrum object.

Methods Summary

continuum_normalize(self[, bins, order])	Normalize the continuum in each echelle order to unity.
from_e2ds(path[, harps])	Read HARPS(-N) spectrum from an E2DS FITS file.
nearest_order(self, wavelength)	Return the order with the central wavelength nearest to wavelength.
plot(self[, ax])	Plot the echelle spectrum

Methods Documentation

continuum_normalize(self, bins=5, order=2)

Normalize the continuum in each echelle order to unity.

Parameters

binsint

Number of bins used to compute maxes for continuum tracing

orderint

Polynomial order fit to the binned-maxes

classmethod from_e2ds(path, harps=True)

Read HARPS(-N) spectrum from an E2DS FITS file.

Parameters

pathstr

Path to FITS file

harpsbool (optional)

True for HARPS, False for HARPS-N

Returns

spEchelleSpectrum

Echelle spectrum object

nearest_order(self, wavelength)

Return the order with the central wavelength nearest to wavelength.

Parameters

wavelengthfloat

Reference wavelength

Returns

spectrumSpectrum

plot(self, ax=None, **kwargs)

Plot the echelle spectrum

Parameters

axAxes (optional)

Axis object

kwargsdict

Keyword arguments to pass to the plot command

Returns

axaxis