Observational techniques meeting #2
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Observational techniques meeting #2
description
Observational techniques meeting #2. Good use for diffraction: exoplanets. Good use for diffraction: exoplanets. Chromatic aberration. Spherical aberration. Parabolic. Spherical. Coma. Astigmatism. (e.g., Hale telescope). Field curvature. (e.g., Oschin Schmidt telescope). - PowerPoint PPT Presentation
Transcript of Observational techniques meeting #2
Observational techniquesmeeting #2
Good use for diffraction: exoplanets
Good use for diffraction: exoplanets
Chromatic aberration
Spherical aberration
Parabolic
Spherical
Coma
Astigmatism
(e.g., Hale telescope)
Field curvature
(e.g., Oschin Schmidt telescope)
Distortion
Barrel Pincushion
Keck NIRC
Reflection and transmission
Telescopes
Galilean (refracting)
40” refractor at Yerkes Obs.
Telescopes: newtonean
Telescopes: Cassgrain
Telescopes: Cassegrain
Ritchey-Cretien: Wise, HST, VLT …
Interlude: mounts
Equatorial
Alt-az
Telescopes: Coude
Naysmith
Coude
Telescopes: prime focus
Telescopes: Schmidt
Schmidt Cassegrain
Schmidt (e.g., PTF)
Maksutov
End