William Optics new 45 Deg. EP will work with any 1.25" eyepieces and scopes with 1.25" eyepiece holders. It will turn upside down images right side-up and give correct left-to-right image. This high-quality, low-cost erecting prism will set the standard in erecting prisms!
Uses three-element objective lens with two ED elements for superb color correction and image quality
Configures as a finder/telescope/guide scope with a focal length of 220mm and focal ratio of f/5.5
Includes three-element focal reducer and spacers to configure as a six-element f/4.5 apo telescope with focal length of 180mm for wide-field astronomical imaging
Includes tube mounting rings, Vixen-style dovetail, and Swiss-Arca mounting plate for a wide range of mounting configurations
Askar FMA180 Pro vs FMA180 original:
All new marked 360º rotator
New one-piece internal focus system
New finder base for attaching accessories like the ASIAIR
Improved longer Vixen-style dovetail
Upgraded metal knurled thumbscrews
Larger M48x0.75 rear threads
New filter thread adapter allowing 2" filters to be inserted