How do you calculate FWHM of the primary beam of the telescope from wavelength and dish size?


Posted July 17th, 2010 by admin 2 Comments »
telescope
Ian S asked:


How do you calculate FWHM of the primary beam of the telescope from wavelength and dish size?

I assume there is some simple formula, and it goes something like Field of View ~= Lamda/Dish Diameter.

How do you calculate FWHM of the primary beam of the telescope from wavelength and dish size?


Posted July 17th, 2010 by admin 2 Comments »
telescope
Ian S asked:


How do you calculate FWHM of the primary beam of the telescope from wavelength and dish size?

I assume there is some simple formula, and it goes something like Field of View ~= Lamda/Dish Diameter.

What is the Rayleigh limit of the resolving power of the following telescope?


Posted March 26th, 2009 by admin 1 Comment »
telescope
Bobbi M asked:


The Arecibo radio telescope with a dish diameter of 305m, working at a wavelength of 21cm