Stars head off for shelter (8)
I believe the answer is:
sunshade
'shelter' is the definition.
(sunshade is a kind of shelter)
'stars head off' is the wordplay.
'stars' becomes 'suns' (Sun is an example).
'off' indicates an anagram.
'head' with letters rearranged gives 'hade'.
'suns'+'hade'='SUNSHADE'
'for' acts as a link.
(Other definitions for sunshade that I've seen before include "Awning or parasol will provide it" , "shelter" , "Awning or parasol, for example" , "protective cover" .)