Advanced Telescope Systems - Makers of portable telescope piers
Astro-Physics - Makers of high-end telescopes, mounts and accessories.
Oceanside Photo and Telescope - Retailer of astro gear with friendly and knowledgeable staff and great prices.
RC Optical Systems - Makers of high-end Ritchey Chretien telescopes and accessories.
Santa Barbara Instruments Group - Makers of CCD cameras and accessories.