Happy Birthday Mr. Black!

What is a Sunspotter?

How does a Sunspotter work?

What are sunspots?

Wow, is this expensive?

Why didn't we see any sunspots?

Why did the sunspotter have to be adjusted so often?

How can we look at the sun through this Coronado telescope?

Is this the photosphere or the chromosphere?

This isn't a shadow, it is a reflection of the sun.