07-13-2011, 11:50 AM
Been a long while since i kept up on telescope parts, but I think that's a steal!
I also think F5 is awfully short for a refractor... Probably would get a smaller "sweet spot" in the middle, with fringing on the edges... But compared to the last prices I remember for a big front lens for an achromat refractor, it would be worth it for a nice first project.
I also think F5 is awfully short for a refractor... Probably would get a smaller "sweet spot" in the middle, with fringing on the edges... But compared to the last prices I remember for a big front lens for an achromat refractor, it would be worth it for a nice first project.