Twitter Google Share on Facebook FOCAL (redirected fromfocal zone) Dictionary Thesaurus Medical FOCAL 1. FOrmula CALculator. An interactive system written by Rick Merrill ofDECin 1969 for PDP-5 and PDP-8. It was a descendant ofAID/JOSS. ...
In order to avoid tangential explanations, I understand sampling/focal length to pixel size best practices, etc. This is not what I am asking about. There is a relationship between focalratioand linear FWHM. There is a calculator here:https://www.astropix...ators.html#fwld ...and the fo...
Re: "Manufactured" mirrors without spec sheets. If they're part of a telescope, the manufacturer should have accommodated the "actual" focal length in the final build--an acceptable practice. If they're sold "mirror only", without an actual focal length, they should at least include a +/...
Calculator for Beam Waist Radius Wavelength: Focal length: Initial beam radius: (collimated input beam) Beam quality factor: (1 for Gaussian beams) Waist radius: calc Enter input values with units, where appropriate. After you have modified some inputs, click the “calc” button to recalcu...
Google Share on Facebook FOCAL (redirected fromFocal (disambiguation)) Dictionary Thesaurus Medical Wikipedia FOCAL 1. FOrmula CALculator. An interactive system written by Rick Merrill ofDECin 1969 for PDP-5 and PDP-8. It was a descendant ofAID/JOSS. ...