NASA Exoplanet Science Institute

NExScI Keck Interferometer Support Page

The NExScI provides observation planning, data infrastructure, and data calibration applications for KI. This web page contains links to help you write and submit a KI proposal and access, reduce and calibrate KI data. For assistance, contact your assigned contact scientist or visit the the help desk page.

Quick Links

Interferometry Basics

Instrument Information

Proposal Planning

Observation Planning

Once your proposal has been accepted, you will need to prepare a schedule file. All observations with the Keck Interferometer are executed as service observing.

Data Access

The raw data are reduced to averaged visibilities (Level 1) by the NExScI and these data are available through a web interface, subject to data proprietary constraints.

Data Analysis

The data analysis is covered in two stages: from raw data to visibilities is called data reduction and correcting those visibilities for the system visibility is called data calibration.

Data Reduction

The data reduction step is run automatically by the NExScI. If you would like the reduction run with different settings, please contact your contact scientist.

Data Calibration

Visiting the NExScI

The NExScI welcomes visits by KI observers who wish to receive in-person tutorials on how to make use of our observing planning and data analysis software tools. To initiate a request to come visit the NExScI, please send email to your contact scientist or visit the the help desk page.