dr lisa jardine-wright cavendish laboratory university of cambridge

Light the Universe & EverythingDr Lisa Jardine-WrightCavendish LaboratoryUniversity of Cambridge

How do astronomer

s “see” things?

How do we make a picture?

How do we make a picture?

What does this say when you

look through the red filter and

read?

How do we make a picture?

How do we make a picture?

What does this say when you

now look through the red filter and read?

How do we make a picture?

Red Filter Green Filter Blue Filter

How do we make a picture?

Red Green Blue

http://coolcosmos.ipac.caltech.edu/image_galleries/ir_zoo/

Light can be emitted by objects.

How do we “see” things?

How do we “see” things? Light can be reflected by an object.

How do we “see” things?

Light is blocked…

Light is blocked...

in some wavelengths but not others.

How do we “see” things?

How do we “see” things?

Light is blocked...

in some wavelengths but not others.

The Sun:Visible

The Sun:Radio

The Sun:Microwave

The Sun:Infrared

The Sun:Visible

The Sun:Ultraviolet

The Sun:X-ray

The Sun:Gamma Rays