Two-mirror telescope design with third-order coma insensitive to decenter misalignment

Lucimara Cristina Nakata Scaduto, Jose Sasian, Mario Antonio Stefani, Jarbas Caiado De Castro Neto

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Misalignments always occur in real optical systems. These misalignments do not generate new aberration forms, but they change the aberration field dependence. Two-mirror telescopes have been used in several applications. We analyze a two-mirror telescope configuration that has negligible sensitivity to decenter misalignments. By applying the wave aberration theory for plane-symmetric optical systems it is shown that the asphericity in the secondary mirror, if properly chosen, can compensate for any decenter perturbation allowing third-order coma unchanged across the field of view. For any two-mirror system it is possible to find a configuration in which decenter misalignments do not generate fielduniform coma.

Original languageEnglish (US)
Pages (from-to)6851-6865
Number of pages15
JournalOptics Express
Issue number6
StatePublished - Mar 25 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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