opd_manual¶
-
pyoof.telgeometry.
opd_manual
(Fp, F)[source] [edit on github]¶ Optical path difference (OPD) function, \(\delta(x, yd_z)\). Given by geometry of the telescope and defocus parameter, \(d_z\). For Cassegrain/Gregorian geometries. Primary and total (or effective) foci are required, \(F_\mathrm{p}\) and \(F_\mathrm{eff}\), respectively.
Parameters: Fp :
float
Focus primary reflector, \(F_\mathrm{p}\), in meters.
F :
float
Effective or total focus for the telescope mirror configuration, \(F_\mathrm{eff}\), in meters.
Returns: opd_func :
function
It returns the function
opd_func(x, y, d_z)
, which depends only on the grid and radial offset values, similar toopd_effelsberg
.