Astrozap Focusing Screen for 2 1/2 - 5 1/2" (63mm-139mm) Telescopes
Focusing Screen for 2.5-Inch to 5.5-Inch (63 to 139 mm) Outside Diameter Telescopes: This Astrozap Focusing Screen is a lightweight aluminum focusing screen with adjustable grommets. Fits telescopes with outside diameters of 2.5 to 5.5-Inch (63 to 139 mm). The thin design allows for optimal performance. The precision grid allows for perfect focus, every time. Easily fitted to the front of your telescope.
Manufacturer Product Number: 501
|Fits Telescope OD Range of||2.5" to 5.5" (63mm to 139mm)|