Cassegrain Twin Spectrograph

Welcome to the TWIN-Spectrograph Homepage
The Cassegrain TWIN Spectrograph (CTS) at the Calar Alto 3.5m telescope and it's documentation is currently being updated. Therefore we recommended to look into the chapter "NEWS" in the appendix of the Observer's Guide to get a short overview of the actual status of the upgrading process.

Observer's Guide
Guidelines for using the TWIN-Spectrograph at the Calar Alto 3.5 m telescope.

Short Overview for the Twin-Spectrograph
Available gratings.

Comparison Lamps
Available gratings.

Short Overview of all available CCD-detectors on Calar Alto

Uwe Graser