Can anyone give me an idea of whats involved in making my own large aperture mirror (16 to 20 inch). I am toying with the idea of making a big scope for the observatory. I need to keep it short as I only have 1.5 metres from the centre of the dome to the walls. Cassegrain seems to be the way to go. I wonder if I can make large aperture mirror and tube, then adapt the existing fork mount to fit? That way I can keep my GPS go-to features.
Any indication of resources, price, availability of materials and places to get it done ( I live in Canberra), would be helpful.
Baz.
Barry's home-made observatory.
http://members.iinet.net.au/~armstead