Observational techniques meeting #2

19
Observational techniques meeting #2

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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

Page 1: Observational techniques meeting #2

Observational techniquesmeeting #2

Page 2: Observational techniques meeting #2

Good use for diffraction: exoplanets

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Good use for diffraction: exoplanets

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Chromatic aberration

http://upload.wikimedia.org/wikipedia/en/4/47/Lens6a.svg
http://upload.wikimedia.org/wikipedia/commons/1/15/Lens6b-en.svg
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Spherical aberration

Parabolic

Spherical

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Coma

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Astigmatism

(e.g., Hale telescope)

http://upload.wikimedia.org/wikipedia/commons/b/b3/Astigmatism.svg
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Field curvature

(e.g., Oschin Schmidt telescope)

http://upload.wikimedia.org/wikipedia/commons/f/fc/Field_curvature.svg
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Distortion

Barrel Pincushion

Keck NIRC

http://en.wikipedia.org/wiki/File:Barrel_distortion.svg
http://en.wikipedia.org/wiki/File:Pincushion_distortion.svg
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Reflection and transmission

http://en.wikipedia.org/wiki/File:Optical-coating-2.png
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Telescopes

Galilean (refracting)

40” refractor at Yerkes Obs.

http://upload.wikimedia.org/wikipedia/commons/4/4c/Galileantelescope.png
http://upload.wikimedia.org/wikipedia/commons/d/dc/Yerkes_Observatory_Astro4p7.jpg
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Telescopes: newtonean

http://upload.wikimedia.org/wikipedia/commons/6/60/Newton-Teleskop.svg
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Telescopes: Cassgrain

http://upload.wikimedia.org/wikipedia/en/2/2c/Cassegrain.en.png
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Telescopes: Cassegrain

Ritchey-Cretien: Wise, HST, VLT …

http://upload.wikimedia.org/wikipedia/en/2/2c/Cassegrain.en.png
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Interlude: mounts

Equatorial

Alt-az

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Telescopes: Coude

Naysmith

Coude

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Telescopes: prime focus

http://www.astro.caltech.edu/palomar/animations/lfcwirc.mov
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Telescopes: Schmidt

Schmidt Cassegrain

Schmidt (e.g., PTF)

Maksutov

http://en.wikipedia.org/wiki/File:Schmidt-Cassegrain-Telescope.svg
http://en.wikipedia.org/wiki/File:Schmidt_telescope_(PSF).png
http://en.wikipedia.org/wiki/File:Maksutov_spot_cassegrain.png
http://en.wikipedia.org/wiki/File:Dmitri_Maxutow_Leutnant.jpg
http://en.wikipedia.org/wiki/File:Maksutov_cassegrain_comercial.png
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End


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