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Mersenne telescope design
Posted: Wed Oct 10, 2018 5:56 am
I've been thinking about this combination in my head. Would a Mersenne telescope in front with a h-alpha scope in the back attached achieve a higher resolution? Or would it be similar to just having an h-alpha telescope with an ERF that does not block as much energy allowing in more light?
Re: Mersenne telescope design
Posted: Thu Oct 11, 2018 9:01 am
I have considered this as well. There is a good discussion on the Mersenne design here:
https://www.cloudynights.com/topic/3922 ... telescope/
Would a Mersenne telescope in front with a h-alpha scope in the back attached achieve a higher resolution?
There is significant potential field angle magnification and greatly exacerbated off-axis aberrations due to the secondary objective's inability to perform optimally with the magnified field angles. Therefore the Mersenne likely would be useful only for narrow fields of view.