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Old 27-01-2022, 10:28 PM
CharlesM
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CharlesM is offline
 
Join Date: Jan 2022
Location: Townsville, Australia
Posts: 13
Flexed mirrors Bino.

I'm in the process of building a 12" f6 bino using two flexed mirrors.
Has anyone used Alan Adlers Flex program to make a flexed mirror?
I did use it some years ago to sort out an 8" f3.7 under corrected mirror but with an excellent surface we didnt want to harm.
It flexed to produce a superb image.


I want to make a pair of 12" f6 flexed mirrors for my binoscope with curved backs and I'm hoping I can get some answers for the following questions regarding the programs output.

1, If you input 0 to find best back radius the output screen shows back radius, spot, and a column labled W. What does the W stand for?

2, what exactly does Beta1=.01 and Beta2=.92 mean on the graph screen?

3, In Alans notes he states that if a curved back is used the the outer pusher cushion is better to be narrower and the puller obviously larger.
Anyone know what would be a reasonable dimension to use?
I'm considering 5mm perimeter cushion and correspondingly larger dia puller.

I ran flex with curved back and flat back and the dimensions for puller and pusher are identical so it doesnt reflect Alans points.
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