Telescope & Facility Information
Including latitude, latitude, and altitude, as well as optical prescription of the telescope.
Telescope pointing limits
Keck I and Keck II pointing limits. Make sure to check these to determine when your targets are accessible and for how long.
Overview of The Observatory
Very general information about the Observatory.
Interfacing Visitor Instruments
Contains lots of useful tidbits on the facility instruments, too.
Images from Mauna Kea, satellite images, weather forecasts.
Mauna Kea Summit Views
A summary of the Concam, Gemini, UKIRT, and JAC summit views.
Interactive infrared transmission plot
Sky PA Calculator
A tool for deducing the Sky Position Angle from a FITS header.