Surprisingly no more stars for stargazers (11)
I believe the answer is:
astronomers
'for stargazers' is the definition.
('astronomer' can be a synonym of 'stargazer')
'surprisingly no more stars' is the wordplay.
'surprisingly' indicates an anagram (a surprising ordering of the letters).
'no'+'more'+'stars'='nomorestars'
'nomorestars' with letters rearranged gives 'ASTRONOMERS'.
(Other definitions for astronomers that I've seen before include "Moon-starers (anag)" , "Monster oars (anag.)" .)