poppy_ao_psf¶

simcado.psf.poppy_ao_psf(strehl, mode='wide', plan='A', size=1024, filename=None, **kwargs)[source]¶

Create a diffraction limited E-ELT PSF with a Seeing halo

Uses POPPY to create a diffraction limited PSF for the E-ELT for a certain configuration of mirror segments. The diffraction limited core is added to seeing halo, modelled by either a moffat or gassian profile.

Parameters

strehlfloat: [0 .. 1] The components are summed and weighted according to the strehl ratio psf = (1-strehl)*seeing_psf + (strehl)*diff_limited_psf
modestr, optional: [“wide”, “zoom”] Default = “wide”. Sets the pixel size for each of the MICADO imaging modes - {“wide” : 4mas, “zoom” : 1.5mas}
planstr, optional: [“A”, “B”], Default = “A” * Plan A is for a fully populated mirror (798 segments) * Plan B has the inner 5 rings missing (588 segments) and a further 5 random segments missing (583 segments)
sizeint, optional: [pixels] Default = 1024
filenamestr, optional: Default = None. If filename is not None, the resulting FITS object will be saved to disk

Returns

hdu_listastropy.HDUList: an astropy FITS object containing the PSFs for the given wavelengths

Other Parameters

fwhmfloat: [arcsec] Default : 0.8
psf_typestr: Default : “moffat”
wavelengthfloat: [um] Default : 2.2
segmentslist: Default : None. A list of which hexagonal poppy segments to use See get_eelt_segments()
flattoflatfloat: [m] Default : 1.256
gapfloat: [m] Default : 0.004
secondary_radiusfloat: [m] Default : 5
n_supportsint: Default : 6
support_widthfloat: [m] Default : 0.2
support_angle_offsetfloat: [deg] Default : 0
n_missingint: Default : None. Number of segments missing
pupil_inner_radiusfloat: [m] Default : None # Plan A: 5.6m, Plan B: 11.5m
pupil_outer_radiusfloat: [m] Default : 19