Read more about NOIRLab's instruments and other capabilities in the Capabilities brochure.
COSMOS - Cerro Tololo Ohio State Multi-Object Spectrograph
COSMOS is a nearly-identical modified version of the OSMOS spectrograph in use on the MDM Hiltner 2.4-m telescope, and adapted for use on the 4-m telescopes at CTIO. The design modifications, fabrication, assembly and testing were a joint effort between Ohio State and NOIRLab. This instrument was built to provide a modern, high-efficiency spectrograph for the U.S. community that meets many of the scientific needs described in the ReSTAR (Renewing Small Telescope for Astronomical Research) report.
- COSMOS Manual (PDF)
- COSMOS Fact Sheet (PDF)
- COSMOS Contact Information
Observing Information and Tutorials:
- COSMOS Observing Information
- COSMOS MOS Mask Design
- Exposure Times and S/N
Data Reduction Guides:
- IRAF Spectroscopy Documents
- Data Reduction Cookbook (courtesy of R. Shaw)
Last Updated: 09 March 2018 (SDP)
Updated on January 18, 2023, 9:31 am