Ask an Astronomer Team

Marc Berthoud

Marc worked on the FORCAST camera for the SOFIA airborne observatory. He now is a staff astronomer at the Yerkes Observatory.

Display #

Title	Created Date	Hits
When is the best time to observe zodiacal light? (Intermediate)	Feb 09	30653
How does the color index of a star relate to its actual color? (Intermediate)	Jan 07	61658
On which days can I see the Moon in the evening / morning and why is this so? (Beginner)	Sep 06	85118