Call Us: 877.623.4021 | Free US Shipping On Orders $25+ EXCEPT all Astrodon products and some oversize JMI products

JMI, owned by Optical Structures Incorporated, is a world-renowned manufacturer of astronomical telescopes and after-market accessories for the amateur and professional astronomer.  JMI produces a variety of unique products that cannot be found anywhere else.

Astrodon products ship worldwide, but this website does not automatically ship other products to all locations. Email for a shipping quote for non-Astrodon orders outside the USA and Canada. Items in stock usually ship within one week, but some products take longer and are noted on the product page Dismiss