|
Ok this is why I would like to use a cassegrain secondary, I think that a flat secondary will obstruct more incoming light it would have to be bigger than the cassegrain secondary. Having a long focal ratio to cut back on the size of the flat secondary would put to much demand on the telescope mount, having a longer and more heavier upper section. The convex of the secondary will allow for a longer focal point to get the eyepiece further down the telescope.
I haven't even started with the primary it is just an idea at the moment witch might come a reality in a few years to come.
|