Thread: Strehl ratio
View Single Post
Old 31-08-2019, 06:37 PM
Slawomir's Avatar
Slawomir (Suavi)
Going visual

Slawomir is offline
Join Date: Sep 2014
Location: North Queensland
Posts: 3,217
Thank you all for your posts.

It looks like then that the rms wavefront error gives a much more accurate and realistic indication of the optical quality that PV. I found a few academic articles about Strehl, and all used rms wavefront error for Strehl calculation.

To conclude, I will quote Peter Ceravolo: In the past, I, like most amateur astronomers, only considered the PV wave value when assessing a telescope's optical quality. But after observing with a 1/2 wave PV MaksutovNewtonian telescope that passed the star test and yielded excellent images of Saturn and double stars, I felt compelled to reconsider how I evaluated optical quality.
Reply With Quote