Optics are specified and tested for image quality so 80% of incident light falls within 0.6 arc seconds.

Finish on the mirrors is 80/60 for the primary and 60/40 on the secondary.

• Focus may be manually controlled or commanded by the control system (focus motor powered only when focusing to minimize heat generation)

• Low temperature (-40 degrees Celsius) operation optical encoders

• 2-speed motorized focus with high accuracy position readout

• Invar spacers available to compensate for temperature and maintain focus (optional on 0.4M)



• Telescope Optics Custom Features

OPTIONS:

• Invar spacers available to compensate for temperature and maintain focus

• Other F ratios and field sizes available

• Ritchey Chretien optics

• Field corrector