Friday, August 31, 2018

Optical Transfer -Function.


Spatial frequency is a characteristic quantity of a structure that reproduces identically at regularly spaced positions.



It is the measure of the number of repetitions per unit of length or per unit of angle.

The concept of spatial frequency finds its main applications in optics, especially in photography, video and Astronomy.

Part of Asto zine 3 in preparation:
 
 "Delinquent optics"




Will be added: more details in the magazine.



Stars with old fisheye And brightness treatment    +1



Ufo capture and post treatment    + 1 




Airy spots well visible!
     
Excerpt from the Airy spots mini poster in the Astro zine 3.

Complete Pdf n° 56 from 2018 by my website : Tree data structure Tab.



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