Call Us: 877.623.4021 | Free USA Shipping EXCEPT all Astrodon products and some other bulky and/or heavy 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.

All products now ship worldwide from this website! Free shipping in the USA (excepting all Astrodon products and a few other bulky and/or heavy items). Dismiss