Papers
7
Total Citations
451
H-Index
6
About
F. J. Castander is a prominent astrophysicist whose research has centered on observational cosmology, with a particular focus on the development and deployment of large-scale spectroscopic survey instruments designed to probe the nature of dark energy. A core contributor to the Dark Energy Spectroscopic Instrument (DESI) collaboration, Castander has played a significant role in advancing one of the most ambitious cosmological surveys ever undertaken — a five-year program targeting 40 million galaxies and quasars to map the universe's expansion history through baryon acoustic oscillations and redshift-space distortions. His most-cited work, the 2016 DESI instrument design paper (234 citations), laid critical groundwork for this Stage IV dark energy experiment, while his contributions to the robotic multi-object focal plane system (175 citations) helped bring to life the precision fiber-positioning technology that makes DESI's survey efficiency possible. Earlier, Castander was involved in conceptualizing the DESpec instrument for the Blanco Telescope, a precursor vision that anticipated many of DESI's capabilities. Across his career, Castander's work has helped transform wide-field spectroscopic cosmology from concept into operational reality, directly enabling the community's most precise measurements of cosmic structure and dark energy's role in the universe's accelerating expansion.
Research Focus
Key Achievements
Top Papers
- 1The DESI Experiment Part II: Instrument Design234 citations · 2016
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- 4Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument10 citations · 2022
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- 6The DESI instrument control system6 citations · 2016
- 7The DESI instrument control systems: status and early testing6 citations · 2018