Crossword Genius

Star group periodically accepts crossword setters (5)

Ross

I believe the answer is:

cetus

'star group' is the definition.
(I know that Cetus is a star group)

'periodically accepts crossword setters' is the wordplay.
'periodically' indicates alternate letters (letters must be selected 'every so often').
'crossword setters' becomes 'us' (the crossword setter and their colleagues).
The alternating letters of 'accepts' are 'cet'.
'cet'+'us'='CETUS'

(Another definition for cetus that I've seen is " stars".)

I've seen this clue in The Times.
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