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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
