Dark Energy Spectroscopic Instrument

• The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3D map spanning the nearby universe to 11 billion light years.

Basic Information

• The Dark Energy Spectroscopic Instrument (DESI) Webpage

Imaging Surveys:

• DECam Legacy Surveys

Social Media:

• [@desisurvey: DESI’s twitter handle](https://twitter.com/desisurvey?lang=en)

Important Documents:

• Science Final Design Report
• Instrument Final Design Report

Policy and Community:

• DESI collaboration bylaws: collaboration, membership, governance​
• DESI data management plan (DMP)
• DESI Policy on Membership Effort and Builder Status​
• DESI Policy on Ongoing Participation By Those Leaving DESI Institutions
• DESI Publication Policy
• DESI External Collaborator Policy

Important Publications:

• Overview of the Dark Energy Spectroscopic Instrument

Imaging Survey:

• Overview of the DESI Legacy Imaging Surveys
• Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys

Technical Papers:

• Dark Energy Spectroscopic Instrument (DESI) Fiber Positioner Thermal and Wind Disturbance Test
• The DESI instrument control systems: status and early testing
• Dark energy spectroscopic instrument (DESI) fiber positioner production
• DESI focal plate alignment
• Fabrication of the DESI corrector lenses
• The DESI fiber system
• The DESI spectrograph system and production
• A predictive optical sky background model for DESI

Cosmology Related:

Impacts of Fiber Assignments:

• Unbiased clustering estimates with the DESI fibre assignment
• Imprint of DESI fiber assignment on the anisotropic power spectrum of emission line galaxies
• Mitigating the impact of the DESI fiber assignment on galaxy clustering

Software and Pipeline:

• desihub - Public code associated with the Dark Energy Spectroscopic Instrument

Key Components:

• desisurvey: Code for desi survey planning and implementation
• surveysim: Simulate afternoon planning and nightly tile scheduling for the DESI survey
• specter: A toolkit for simulating multi-object spectrographs
• desitarget: DESI targeting
• desispec: DESI spectral pipeline
• specsim: Quick simulations of spectrograph response
• desisim: DESI simulations
• fiberassign: Fiber assignment code for DESI
• redrock: Redshift fitting for spectroperfectionism
• desietc: Online exposure time calculator