Zero-expansion substrates are available. We will quote a price on the optics to your specifications. Interferometer certification of optical quality. See How to Interpret Optical Specifications in the Technically Speaking section of our web site to read the criteria we use to determine the quality of our optics Telescope Mount Open truss tube assembly. Anodized 6061T6-511 aluminum construction with stainless steel fasteners.
All bearings are tapered roller.
Motorized secondary focusing mechanism. 15 arc-seconds as a standard. Greater pointing accuracy, using higher resolution encoders, is available at additional cost. GPS system provides continual precise timing for computer control. Latitude and longitude GPS data can be used for systems on a mobile platform.