https://familystar.org.tw/index.php?option=com_smf&Itemid=35&topic=39382.msg262496#msg262496seestar s50 變星觀測 XY LEO
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5078555&fbclid=IwY2xjawJlO3pleHRuA2FlbQIxMAABHmLeJ9Re7VmWJMufbr1yrKB0awMXPyQWc-1prv24ApkE6rbm42tOw4J6pjYn_aem_SGxFLjIZPgeU-bmK1z_gYQhttps://www.facebook.com/photo/?fbid=10231888098558621&set=gm.654578860687733&idorvanity=201735739305383XY LEO, is a binary system 166 light years away from Earth in the constellation Leo. The binary system consists of two stars that eclipse each other approximately every 7 hours. If the system were stable, eclipses would occur precisely every 7 hours. However, if we monitor this timing over time, it is easy to see that the time of the minimum (maximum of the eclipse) seems to shift by a few seconds each cycle, sometimes advancing and sometimes retarding the time of the so-called epoch.
With software such as Phoranso, you can extract the G channel.