Subo Dong The Ohio State University Microlensing Follow-Up Network μFUN Coordination in Chaos – (An Brief History on) How a Planet was Discovered Subo Dong The Ohio State University Microlensing Follow-Up Network

Theoretically … Alert Follow-up Planet!!!

Other Groups (PLANET/RoboNet, etc) Daily Alerts OGLE/MOA MicroFUN in Action Home base Other Groups (PLANET/RoboNet, etc) Analysis Daily CTIO High-mag/Anomaly? Data Reductions MicroFUN Observers

May 16th, Prelude to the Discovery UT 10:35 OGLE-243 is binary, should we drop it? OGLE-270 too crowded? OGLE-08-270 Scott UT 10:42 Yeah, I agree on OGLE-243, but OGLE-270 is interesting. Andy UT 8:53 OGLE-270, OGLE-243 anomaly! UT 9:16 OB243 anomaly confirmed OGLE-08-243 OGLE Ian (MOA)

May 16th, Prelude to the Discovery MOA-198 Grant/Tim Dave/Guy Jennie Berto Bill CTIO Mt. Lemmon MOA-198 Subo, Byeong-Gon, Sungju Ian(MOA) Stefan (PLANET/Canopus) Anomaly? condition no good Scott Subo Andy

May 16th, Prelude to the Discovery UT 17: “Fog is now causing 5 mags of extinction. Only Jupiter is visible now” Grant UT12: Fixing tracking; More MOA-198, Fog is coming, look at OGLE-270? Berto UT 19:11, clouded out Jennie Did Jennie’s data, but can’t reduce the Auckland data (ap8).  Subo Yeah, let’s do OGLE-270! UT 16: OGLE-270 is either peaking in 3 hrs at very high-mag or anomalous, priority override MOA-198 Andy

May 17th , by the noon (US) OGLE didn’t observe; Canopus clouded out UT 16: Ask for 14 more CTIO points Andy UT 8:52 Pascal (PLANET) UT 6 SAAO data Subo “must head to airport now. “ CTIO Byeong-Gon Mt. Lemmon UT 15 “Blonde Dah! …it appears I copied the incorrect file hahaha, anyway the correct data is now on its way …  Jennie - blonde and lacking sleep :)” Didn’t have cable, so Guy observed MB198 previous night! Jennie Tim/Grant Dave/Guy

May 17th , Planet! Request Override from CTIO UT 23:29 “Beautifully confirmed by Kumeu, … Very likely to be a planet …” UT 23:13 Clear anomaly! No seeing correlation! Andy Jennie, upload UT 22:51 Subo Tim/Grant Dave/Guy, uploading UT 22:54

Aftermath Grant/Tim David/Guy Jennie Bill CTIO Mt. Lemmon Roland Palomar Wise Data CAO OGLE PLANET Szymon Rick, Byeong-Gon Reduction Andy Scott Subo Model May 27th

Coordination Conclusions: I wish I don’t have to sleep Have a wristwatch running UT Maybe everyone should try Dave’s coffee while observing? from David Moorhouse <acrux@orcon.net.nz> to Subo Dong dong@astronomy.ohio-state.edu Special observations require the right type of coffee I think we have some very noisy non-normalized data on the left hand side. Isn’t this a planet???