They reveal the stars in all their splendour (10)

I believe the answer is:

spotlights

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'all their splendour' is the definition.
I can't judge whether this definition defines the answer.

'they reveal the stars' is the wordplay.
'they reveal' becomes 'spot' (I am not sure about this - if you are sure you should believe this answer much more).
'the stars' becomes 'lights'.
'spot'+'lights'='SPOTLIGHTS'

'in' is the link.

Can you help me to learn more?

(Another definition for spotlights that I've seen is " Focuses attention on".)

I've seen this clue in The Globe and Mail and The Guardian.

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