SH_Reference

class mmtwfs.wfs.SH_Reference(data, fwhm=4.5, threshold=20.0, plot=True)

Bases: object

Class to handle Shack-Hartmann reference data

Read WFS reference image and generate reference magnifications (i.e. grid spacing) and aperture positions.

Parameters

dataFITS filename or 2D ndarray

WFS reference image

fwhmfloat

FWHM in pixels of DAOfind convolution kernel

thresholdfloat

DAOfind threshold in units of the standard deviation of the image

plotbool

Toggle plotting of the reference image and overlayed apertures

Methods Summary

adjust_center(x, y)	Adjust reference center to new x, y position.
apply_pupil(pup_inner, pup_outer)	Apply a pupil mask to the reference apertures
pup_coords(pup_outer)	Take outer radius of pupil and calculate pupil coordinates for the masked apertures

Methods Documentation

adjust_center(x, y)

Adjust reference center to new x, y position.

apply_pupil(pup_inner, pup_outer)

Apply a pupil mask to the reference apertures

pup_coords(pup_outer)

Take outer radius of pupil and calculate pupil coordinates for the masked apertures