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Journal Article
LSST Science Book, Version 2.0
Paul Abell2009
Houston Nasa
Few Citations
0 citations · Instrumentation
Open Access

TLDR

A new telescope will take detailed pictures of the sky over ten years, helping scientists learn more about our solar system, stars, galaxies, and the universe as a whole.

Summary

1 Study Aim

The main goal of the LSST Science Book is to describe the design and scientific goals of the Large Synoptic Survey Telescope (LSST). The authors aim to show how a wide-field, fast, and deep optical survey can open up new discoveries in astronomy. They focus on how LSST will help map the solar system, study stars and galaxies, and explore the structure and history of the universe. Simply put: The paper explains how a new telescope project will help scientists study everything from nearby asteroids to the farthest galaxies.

2 Study Design

The LSST project is designed as a ten-year imaging survey using a telescope with a 6.7-meter aperture and a camera that can capture a 9.6 square degree field of view. The survey will cover 20,000 square degrees of the sky south of +15 degrees latitude. Each area will be photographed about 2,000 times using six color filters, with each exposure lasting fifteen seconds. The survey will reach a faintness limit of about magnitude 27.5 in the r-band, allowing detection of very dim objects. The Science Book details the telescope's hardware, software, and observing strategies. Simply put: The project will use a powerful camera to take many pictures of the southern sky in different colors over ten years.

3 Findings

The LSST Science Book outlines how the telescope will transform many areas of astronomy. The authors report that LSST will help map objects in the solar system, study the structure and populations of stars in the Milky Way and nearby galaxies, and observe both normal and active galaxies across cosmic time. The survey will also track changing and short-lived objects, such as supernovae, and provide data to study the large-scale structure of the universe. By combining different types of observations, LSST will help test models of the universe and the nature of dark energy. The book also discusses opportunities for education and public outreach. Simply put: The telescope will help scientists discover new things about space, from asteroids to the universe's biggest mysteries.

Abstract

A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade. The Large Synoptic Survey Telescope (LSST) will have an effective aperture of 6.7 meters and an imaging camera with field of view of 9.6 deg^2, and will be devoted to a ten-year imaging survey over 20,000 deg^2 south of +15 deg. Each pointing will be imaged 2000 times with fifteen second exposures in six broad bands from 0.35 to 1.1 microns, to a total point-source depth of r~27.5. The LSST Science Book describes the basic parameters of the LSST hardware, software, and observing plans. The book discusses educational and outreach opportunities, then goes on to describe a broad range of science that LSST will revolutionize: mapping the inner and outer Solar System, stellar populations in the Milky Way and nearby galaxies, the structure of the Milky Way disk and halo and other objects in the Local Volume, transient and variable objects both at low and high redshift, and the properties of normal and active galaxies at low and high redshift. It then turns to far-field cosmological topics, exploring properties of supernovae to z~1, strong and weak lensing, the large-scale distribution of galaxies and baryon oscillations, and how these different probes may be combined to constrain cosmological models and the physics of dark energy.