Science instrument module (ISIM)
Houses all cameras and science instruments
Stabilising
trim-flap
Star-tracking
telescopes
Solar power
Steering and
control bus
Antenna for sending
data and receiving
commands from Nasa
Secondary mirror
Reflects light from primary mirror to the science instruments
Primary mirror
18 hexagonal segments made of beryllium and coated in gold to capture faint infrared light
-233C
Cold side
85C
Hot side
Heat shield
Five layers protect optical instruments from light and heat from the sun
1.8-metre
person
to scale
Science instrument
module (ISIM)
Houses all cameras and
science instruments
Stabilising
trim-flap
Solar power
Star-tracking
telescopes
Steering and
control bus
Antenna for sending
data and receiving
commands from Nasa
Primary mirror
18 hexagonal segments made of beryllium and coated in gold to capture faint infrared light
Secondary mirror
Reflects light from primary mirror to the science instruments
-233C
Cold side
85C
Hot side
Heat shield
Five layers protect optical instruments from light and heat from the sun
1.8-metre person
to scale
Science instrument
module (ISIM)
Houses all cameras and
science instruments
Stabilising
trim-flap
Star-tracking
telescopes
Solar power
Antenna for sending
data and receiving
commands from Nasa
Steering and
control bus
Secondary mirror
Reflects light from primary mirror to the science instruments
Primary mirror
18 hexagonal segments made of beryllium and coated in gold to capture faint infrared light
-233C
Cold side
85C
Hot side
Heat shield
Five layers protect optical instruments from light and heat from the sun
1.8-metre person
to scale
-233C
Cold side
Science instrument
module (ISIM)
Houses all cameras and
science instruments
85C
Hot side
Heat shield
Five layers protect optical
instruments from light
and heat from the sun
Star-tracking
telescopes
Solar power array
Steering and
control bus
Antenna for sending
data and receiving
commands from Nasa
Stabilising
trim-flap
Primary mirror
18 hexagonal segments made
of beryllium and coated in gold
to capture faint infrared light
Hubble
primary mirror
2.4-metre diameter
JWST
primary mirror
6.5-metre diameter
Secondary
mirror
Reflects light from
primary mirror to the
science instruments
1.8-metre person
to scale