Saw only deep space flicks (7,4,2)

I believe the answer is:

clapped eyes on

'saw' is the definition.

'only deep space flicks' is the wordplay.
'flicks' indicates anagramming the letters (to flick can mean to cause movement).
'only'+'deep'+'space'='onlydeepspace'
'onlydeepspace' anagrammed gives 'CLAPPED EYES ON'.

I've seen this clue in The Telegraph.

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