Comparison of designs of off-axis Gregorian telescopes for millimeter-wave large focal-plane arrays.

@article{Hanany2002ComparisonOD,
  title={Comparison of designs of off-axis Gregorian telescopes for millimeter-wave large focal-plane arrays.},
  author={S Hanany and Daniel P Marrone},
  journal={Applied optics},
  year={2002},
  volume={41 22},
  pages={
          4666-70
        }
}
We compare the diffraction-limited field of view (FOV) provided by four types of off-axis Gregorian telescopes: the classical Gregorian, the aplanatic Gregorian, and the designs that cancel astigmatism and both astigmatism and coma. The analysis is carried out with telescope parameters that are appropriate for satellite and balloonborne millimeter- and submillimeter-wave astrophysics. We find that the design that cancels both coma and astigmatism provides the largest flat FOV, approximately 21… CONTINUE READING

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