203mm 8" Spherical Mirror - Great Value!
NOTE: Spherical mirrors can be pulled into a parabolic curve by a method known as flexing. The result is often better than a polished parabolic mirror if done properly as parabolic mirror generally have a rough surface and spherical mirrors generally have a smooth surface. Here is a link about mirror flexing to answer any questions about it: http://www.skyandtelescope.com/wp-content/uploads/Adler-MirrorFlex.pdf
Need a replacement mirror or building your own telescope? This is what you get:
8" f/3.9 spherical mirror, focal length = 800mm, coated and ready to mount (holder is not included).
Since this is a big fast mirror, F3.9 and a sphere, you will not get clear high power viewing with it, but for deep sky it will be fine. If you want good clear images up to 200x, you can make a 3" diameter off axis opening, cardboard is fine, and then you will have a 3" F12 refractor-like quality image that should be sharp to 200x. So now you can build a deep sky and planetary scope for a very low cost.
This is a perfect replacement mirror - we bought these directly from our supplier and are passing the savings onto our eBay customers - this is a great price for new optics! Also great for experimenters - make your own telescope! We have focusers and eyepieces in our store, check us out!