Resolution and Seeing

By Mike Luciuk

There is much emphasis, when discussing telescope optics, on the resolution capabilities of the instrument. The quantification of telescopic resolution is somewhat a subjective process. Examples are the Rayleigh, Dawes, and Sparrow criteria. For more detail on this topic, please refer to “Telescope Optics” by Rutten and van Venrooij. The well-known theoretical Rayleigh resolution limit, similar to Dawes but more restrictive, is based on diffraction [ α = 1.22 λ / D ] where α is the … Read the rest “Resolution and Seeing”

Sperry Observatory is open for observing from 7:30 pm - 10:30 pm every Friday night with the exception of the 1st Friday of each month from September to May. A presentation on an astronomy related topic is given at 8:30 pm. This is free and open to the public.