Optical Guidance Systems
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Optical Guidance Systems is a provider of telescopes, mountings, and computer control systems & accessories for business or home use!
About OGS
Optical Guidance Systems is in our 38th year of providing research quality telescopes, mountings, computer control systems, and accessories to a discerning clientele. OGS was the first telescope maker to earn global acceptance for the Ritchey-Chretien RC line of optical tube assemblies, and with well over 100 telescopes worldwide. Our new partnership with Astro Systeme Austria now
05/23/2026
https://www.facebook.com/SierraRemoteObservatories
Sierra Remote Observatories
Sierra Remote Observatories: A remote astronomical observatory with unparalleled seeing, located in the Sierra Nevada Mountains. We hope you enjoy the stunning images from our astrophotgraphers & astronomers.
Keith B. Quattrocchi, MD, PhD
Owner & Founder
01/14/2026
What’s happening this week 🔬
• Mon (Jan 12) / BRAS Meeting
• Fri (Jan 16) / Discussion – Artificial Intelligence
• Fri / Evening Sky Viewing
• Sat (Jan 17) / Science Academy – Distances in Space
• Sat / Plus Night
Join us to explore the universe—no admission fee for most events.
brec.org/HRPO/Jan
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Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |