Skip to content


STRUT INFLUENCE The number and position of struts holding up the secondary mirror determine the struts' diffraction spike pattern. In the first row, there is a set of struts organized in a single line. When light hits a strut, the light bends into a single, perpendicular pattern of amplified and canceled light (represented by a yellow dashed line). In the second row, it shows a second set of struts added to the first, creating a second, perpendicular diffraction spike (represented by a red dashed line). In the third row, there are three struts with two of them at an angle. In this case, there would be three diffraction spikes, with each spike perpendicular to a strut (represented by yellow, red, and blue dashed lines).

Be First to Comment

Leave a Reply

Your email address will not be published. Required fields are marked *

I accept that my given data and my IP address is sent to a server in the USA only for the purpose of spam prevention through the Akismet program.More information on Akismet and GDPR.

This site uses Akismet to reduce spam. Learn how your comment data is processed.


Enjoy this blog? Please spread the word :)