You are here: NRAO Public Wiki>ALMA Web>TWikiUsers>ToddHunter>CasaExtensions>CentralObstructionFactor (2013-08-05, ToddHunter) Edit wiki text Edit Attach Print version

Usage of centralObstructionFactor

Return to directory of Todd's CASA extensions

Computes the scale factor of an Airy pattern as a function of the central obscuration, using a spline fit to Table 10.1 of Schroeder's "Astronomical Optics".

Usage: 

au.centralObstructionFactor(diameter=12.0, obscuration=0.75)
  • diameter: dish diameter (in meters)
  • obscuration: diameter of central obscuration (in meters)

Example: 

CASA <10>: au.centralObstructionFactor()
  Out[10]: 0.99491982473479845
-- ToddHunter - 2013-07-11
Edit  | Attach | Print version | History: r2 < r1 | Backlinks | View wiki text | Edit wiki text | More topic actions
Topic revision: r2 - 2013-08-05, ToddHunter
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding NRAO Public Wiki? Send feedback