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Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations
- Source :
- Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX.
- Publication Year :
- 2018
- Publisher :
- SPIE, 2018.
-
Abstract
- The Simons Observatory (SO) is a new experiment that aims to measure the cosmic microwave background (CMB) in temperature and polarization. SO will measure the polarized sky over a large range of microwave frequencies and angular scales using a combination of small (~0.5 m) and large (~6 m) aperture telescopes and will be located in the Atacama Desert in Chile. This work is part of a series of papers studying calibration, sensitivity, and systematic errors for SO. In this paper, we discuss current efforts to model optical systematic effects, how these have been used to guide the design of the SO instrument, and how these studies can be used to inform instrument design of future experiments like CMB-S4. While optical systematics studies are underway for both the small aperture and large aperture telescopes, we limit the focus of this paper to the more mature large aperture telescope design for which our studies include: pointing errors, optical distortions, beam ellipticity, cross-polar response, instrumental polarization rotation and various forms of sidelobe pickup.
- Subjects :
- Physics
Aperture
business.industry
media_common.quotation_subject
Cosmic microwave background
Astrophysics::Instrumentation and Methods for Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
02 engineering and technology
021001 nanoscience & nanotechnology
Polarization (waves)
01 natural sciences
law.invention
010309 optics
Telescope
Optics
Observatory
law
Sky
0103 physical sciences
0210 nano-technology
business
Focus (optics)
Microwave
media_common
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
- Accession number :
- edsair.doi...........d06e056e929f346cc851176f2ba3df87