Sierra Remote Observatories (SRO) Summary
Sierra Remote Observatories (SRO) provides hosting services for remotely operated telescopes at an exceptional site in the Sierra Nevada Mountains. SRO has been continuously in operation since 2007, currently hosting more than 125 telescope systems and growing. We are honored to host a roster of clients, which include astronomers from universities and science institutes, space industry professionals, and astrophotographers. Our site has: 

    • 146 Telescopes Currently On-Site
     • 1 arcsecond summer seeing
     • 1.2 arcsecond winter seeing
    • subarcsecond peak seeing
     • dark skies: 21.80 Mag/ArcSec²
     • 290 clear nights each year
     • an average wind speed of 1 mph
     • rare thunderstorms
     • no summer monsoons
     • high speed fiber optic internet 
     • 1 Gbps with higher speeds available
     • Starlink internet backup
     • 24/7 technical support
​     • on-site machine shop services
     • secure VPN with redundancy
     • all site generator backup
     • 2 hours of free tech support per month
     • on-site headquarters
​     • client facilities

Our seeing conditions are unique, with 1 arcsecond summer and 1.2 arcsecond winter seeing.  Peak seeing measurements are on average subarcsecond (one hour after onset of astronomical twilight).  We have fiber optic internet with standard 1 Gbps download and upload speeds (full duplex), with higher speeds and dedicated fiber available.  Access to the site is easy, being only one hour by car from the Fresno-Yosemite International Airport.  We have full time 24/7 technical support with local and on-site machine shop and computer services available.  We provide 2 hours of free techinical support per month, more than enough for most all our clients.   Most repairs are performed on-site and we can ship more complicated issues within 24 hours.  We will then reassemble your telescope and make it ready for your use.   For new installations, if you are unable to come out, we can assemble your telescope system for you.         

 
Site Conditions
A significant number of clear nights (290/year), calm weather, and year-round accessibility are just a few factors that contribute to our excellent site conditions.
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Services & Support
Full-time, experienced support staff, along with on-site machine shop services. Standard free support (two hours each month) and more extensive monthly hosting support packages are also available.
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​Hosting Services
SRO offers telescope hosting in multi-telescope shared observatories, private observatories and custom observatories. You place your telescope and imaging system at SRO and we provide the excellent site conditions and infrastructure. Hosting service packages include: base pier, power (with generator back-up), fiber optic internet (with Starlink backup), network services (including secure VPN, with redundancy), telemetry services, and on-site support. We handle the infrastructure and provide a site with excellent seeing so you can focus on data acquisition, imaging, satellite tracking and communications.

​To inquire about observatory availability at SRO, including private, multi-telescope or custom observatories, please contact us via email at [email protected].