[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: ATM tube length




At 04:27 PM 6/9/98 -0400, Tim wrote:
>Ok for and 8" f/6 mirror is better for planetary views and splitting
>double stars...
>and 8" f/8 is better for deep space viewing... Right.

I thought this was the other way around.  A faster scope
(smaller f-ratio) gives you a wider field of view which
is better of deep sky stuff.  A slower (larger f-ratio)
yields a narrower field of view which is better for planets.

/|_