HAO encourages special observation requests to maximize scientific discovery for the solar and heliospheric community.

The MLSO web pages have now officially been moved into the HAO web tree. The navigation is a bit different and is now contained in the sidebar. We hope you can find everything you need. If not, please let us know!

Chromag optics testing

The Chromospheric and Prominence Magnetometer (ChroMag) prototype optics under test on a lab bench at HAO. Monochromatic green light is being passed through 88mm of calcite. This is the thickest stage in ChroMag.

On June 5th, MLSO observed the last transit of Venus in our lifetimes! Visit our transit page to view movies taken during the event.

The FORWARD model is a suite of IDL and fortran codes that calculates simulated coronal polarization signals from numerical and analytical models of the corona.