This transient is a microlensing event due to uknown lens. If the lens contains a planet around it, we should be able to detect it in form of a very short (hours-days) anomaly to the overall trend in the light curve. Therefore, please observe this target as frequently as possible, ideally many times every night, in all possible passbands. The event is likely to last for many months from now and we need a lot of observations!
The evolution and the most recent data can be seen in BHTOM: BHTOM | Target AT2025acft
If you want to submit your observations to BHTOM and have them processed automatically, please get in touch!
Lukasz Wyrzykowski on behalf of the BHTOM team