Quote:
Originally Posted by Peter.M
eg "50% obstruction, diffraction rings blah blah blah"
"But look at the image its amazing"
"Yea but that's because it costs a fortune!"
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My post was actually in response to exclamation at how sharp the images were.
I wasn't arguing . I'm pointing out that a good telescope with an EER of 50% does very nicely for imaging and this is some kind of benchmark - something we couldn't seam to establish in the other thread. It is not about the optics beeing 1/20 wave rather than 1/4 wave although I'm sure every bit helps..
Still wondering how much one of these costs to the front door .