# The Dark Energy Survey

**Authors:**  The Dark Energy Survey Collaboration  
**arXiv:** [astro-ph/0510346](https://arxiv.org/abs/astro-ph/0510346)  
**Date:** 2005-10-12  
**Summary page:** https://www.summarizepaper.com/fr/paper/astro-ph--0510346v1/

## Abstract

We describe the Dark Energy Survey (DES), a proposed optical-near infrared survey of 5000 sq. deg of the South Galactic Cap to ~24th magnitude in SDSS griz, that would use a new 3 sq. deg CCD camera to be mounted on the Blanco 4-m telescope at Cerro Telolo Inter-American Observatory (CTIO). The survey data will allow us to measure the dark energy and dark matter densities and the dark energy equation of state through four independent methods: galaxy clusters, weak gravitational lensing tomography, galaxy angular clustering, and supernova distances. These methods are doubly complementary: they constrain different combinations of cosmological model parameters and are subject to different systematic errors. By deriving the four sets of measurements from the same data set with a common analysis framework, we will obtain important cross checks of the systematic errors and thereby make a substantial and robust advance in the precision of dark energy measurements.