• True prism 1.25” 90-deg star diagonal for astronomy scopes
• The reflection part is a glass PRISM, not a MIRROR

GSO's 90-deg prism diagonal is a very good, and comfortable accessory for your astronomy scopes.

The aperture is 1.25", and main housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum and steel. The 1.25" threaded accepts any standard 1.25" eyepieces and filters.

Shipping & Discounts: shipping & discounts is available if you order multiple quantities/items.