Fig. 1.

Field of NGC 3532, as seen in the Digitized Sky Survey 2 (red filter), with the individual observed fields indicated. The brightest cluster stars are located in the inner four fields (1 to 4). Their shorter exposure times were optimised for the solar-like stars. The outer fields (5 to 8) were exposed longer, with the fainter stars optimised. (Field numbers are positioned in the north-east corners).
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