Askar FMA135 as Finderscope

[tompato]

I have been looking at getting something to dabble in some astrophotography on my Skyguider Pro but I want to keep it simpler and wider focal length to begin with.

I also need a new Finderscope for visual use on my 6 inch Newtonian and I have seen that the FMA 135 can be used as a Finderscope/Guidescope. Would this kill two birds with one stone? (Or possibly three stones if I use it as a guidescope in future).

Am I right in thinking that this combined with say an 18mm eyepiece or something would provide about 7.5x magnification and a fairly wide field? I understand it won't have a crosshair or anything like a normal Finderscope but it should work okay I'd have thought? Has anyone used it as a Finderscope?