The popular 51mm William Optics Red Cat is now mini! A faster system, the 51mm RedCat Mini has a focal ratio of f/3.5. The 178mm focal length is great for wide field astrophotography. Included WIFD focusing system is ZWO EAF ready.
Please bear in mind that this model does not come with a built in filter drawer. The most portable high quality imaging scope you'll find!