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Probing Lensing Anomalies Network (PLANET) was a 1995-2015 collaboration including a number telescopes world-wide, to carry out follow-up observations of gravitational microlensing events (recording their light curves) in response to alerts of transients by a number of surveys.
At some point, PLANET partnered with or merged with MicroFUN, apparently using the name MicroFUN. I have found nothing about recent PLANET activity.