EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 rrigendum[removed]EMCCD photometry reveals two new variable stars in the crowded central region of the

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• Variable stars
• Globular cluster
• RR Lyrae
• Messier 15
• Lucky imaging
• Charge-coupled device
• European Southern Observatory
• Messier 72
• Star
• Astronomy
• Space
• Standard candles