[DJDD]

Hi all,

What should one look for in a newtonian for Astrophotography?
I realise a fast (but not too fast) telescope, e.g f/5 or f/6.
But what about optics? Anything special or will the GSO/Bintel telescopes be ok?

To compare, for the refractors it is preferable to use ED glass for truer representation of colours and less CA.

cheers,
DJDD