Observing at Cerro Tololo


This page contains all the information needed to conduct your observations at Cerro Tololo. Click on the links below for additional information. For general information, you can also refer to the MSO section of our Where to get help page.

Planning, Executing, Wrapping up your run at CTIO

Everything you need to know before, during, and after your observing run at Cerro Tololo.

Director's Discretionary (DD) Time

General guidelines to apply for Director's Discretionary (DD) Time.

ToO Policy

Information about preparation, triggering, and data taking policies regarding Target of Opportunity.

CTIO Staff Responsibilities

Contact information for staff members based on telescope and instrument.

Visitor's computer Guidelines

Already at Cerro Tololo? Make sure your computer is properly set up by following these guidelines.

Remote Observing at Blanco

Not able to visit the observatory this time? Here you can find information about remote observing with the Blanco Telescope.

DECam support Staff

Complete list of support staff for each night, including program and instrument information.

Bad weather protocol at CTIO

Check our current protocol when bad weather conditions affect Cerro Tololo.

Updated on September 8, 2021, 9:47 am