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Modeling sidelobe r...
Modeling sidelobe response for ground-based mm-wavelength telescopeswith the geometrical theory of diffraction
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- Adler, Alexandre E. (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Gudmundsson, Jón E. (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum
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(creator_code:org_t)
- Bellingham, WA : SPIE, The International Society for Optical Engineering, 2020
- 2020
- English.
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In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. - Bellingham, WA : SPIE, The International Society for Optical Engineering. - 9781510636934 - 9781510636941
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Abstract
Subject headings
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- Accurate optical modeling is important for the design and characterisation of current and next-generation experiments studying the Cosmic Microwave Background (CMB). Geometrical Optics (GO) cannot model diffractive effects. In this work, we discuss two methods that incorporate diffraction, Physical Optics (PO) and the Geometrical Theory of Diffraction (GTD). We simulate the optical response of a ground-based two-lens refractor design shielded by a ground screen with time-reversed simulations. In particular, we use GTD to determine the interplay between the design of the refractor’s forebaffle and the sidelobes caused by interaction with the ground screen.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Astrophysics - Instrumentation and Methods for Astrophysics
- Physics
- fysik
Publication and Content Type
- vet (subject category)
- kon (subject category)
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