Abdellaoui, G.G.AbdellaouiAbe, S.S.AbeAdams, J. H., Jr.J. H., Jr.AdamsAhriche, A.A.AhricheAllard, D.D.AllardAllen, L.L.AllenAlonso, G.G.AlonsoAnchordoqui, L.L.AnchordoquiANZALONE, ANNAANNAANZALONEArai, Y.Y.AraiAsano, K.K.AsanoAttallah, R.R.AttallahAttoui, H.H.AttouiAve Pernas, M.M.Ave PernasBacholle, S.S.BacholleBakiri, M.M.BakiriBaragatti, P.P.BaragattiBarrillon, P.P.BarrillonBartocci, S.S.BartocciBayer, J.J.BayerBeldjilali, B.B.BeldjilaliBelenguer, T.T.BelenguerBelkhalfa, N.N.BelkhalfaBellotti, R.R.BellottiBelov, A.A.BelovBelov, K.K.BelovBenmessai, K.K.BenmessaiBertaina, M.M.BertainaBiermann, P. L.P. L.BiermannBiktemerova, S.S.BiktemerovaBisconti, F.F.BiscontiBlanc, N.N.BlancBłȩcki, J.J.BłȩckiBlin-Bondil, S.S.Blin-BondilBobik, P.P.BobikBogomilov, M.M.BogomilovBozzo, E.E.BozzoBruno, A.A.BrunoCaballero, K. S.K. S.CaballeroCafagna, F.F.CafagnaCampana, D.D.CampanaCapdevielle, J. -N.J. -N.CapdevielleCapel, F.F.CapelCaramete, A.A.CarameteCaramete, L.L.CarameteCarlson, P.P.CarlsonCaruso, R.R.CarusoCasolino, M.M.CasolinoCassardo, C.C.CassardoCastellina, A.A.CastellinaCatalano, C.C.CatalanoCATALANO, OSVALDOOSVALDOCATALANOCELLINO, AlbertoAlbertoCELLINOChikawa, M.M.ChikawaChiritoi, G.G.ChiritoiChristl, M. J.M. J.ChristlConnaughton, V.V.ConnaughtonConti, L.L.ContiCordero, G.G.CorderoCotto, G.G.CottoCrawford, H. J.H. J.CrawfordCremonini, R.R.CremoniniCsorna, S.S.CsornaCummings, A.A.CummingsDagoret-Campagne, S.S.Dagoret-CampagneDe Donato, C.C.De Donatode la Taille, C.C.de la TailleDe Santis, C.C.De Santisdel Peral, L.L.del PeralDi Martino, M.M.Di MartinoDiaz Damian, A.A.Diaz DamianDjemil, T.T.DjemilDutan, I.I.DutanEbersoldt, A.A.EbersoldtEbisuzaki, T.T.EbisuzakiEngel, R.R.EngelEser, J.J.EserFenu, F.F.FenuFernández-González, S.S.Fernández-GonzálezFernández-Soriano, J.J.Fernández-SorianoFerrarese, S.S.FerrareseFlamini, M.M.FlaminiFornaro, C.C.FornaroFouka, M.M.FoukaFranceschi, A.A.FranceschiFranchini, S.S.FranchiniFuglesang, C.C.FuglesangFujii, T.T.FujiiFujimoto, J.J.FujimotoFukushima, M.M.FukushimaGaleotti, P.P.GaleottiGarcía-Ortega, E.E.García-OrtegaGaripov, G.G.GaripovGascón, E.E.GascónGenci, J.J.GenciGiraudo, G.G.GiraudoGonzález Alvarado, C.C.González AlvaradoGorodetzky, P.P.GorodetzkyGreg, R.R.GregGuarino, F.F.GuarinoGuzmán, A.A.GuzmánHachisu, Y.Y.HachisuHaiduc, M.M.HaiducHarlov, B.B.HarlovHaungs, A.A.HaungsHernández Carretero, J.J.Hernández CarreteroHidber Cruz, W.W.Hidber CruzIkeda, D.D.IkedaInoue, N.N.InoueInoue, S.S.InoueIsgrò, F.F.IsgròItow, Y.Y.ItowJammer, T.T.JammerJeong, S.S.JeongJoven, E.E.JovenJudd, E. G.E. G.JuddJung, A.A.JungJochum, J.J.JochumKajino, F.F.KajinoKajino, T.T.KajinoKalli, S.S.KalliKaneko, I.I.KanekoKaradzhov, Y.Y.KaradzhovKarczmarczyk, J.J.KarczmarczykKatahira, K.K.KatahiraKawai, K.K.KawaiKawasaki, Y.Y.KawasakiKedadra, A.A.KedadraKhales, H.H.KhalesKhrenov, B. A.B. A.KhrenovKim, Jeong-SookJeong-SookKimKim, Soon-WookSoon-WookKimKleifges, M.M.KleifgesKlimov, P. A.P. A.KlimovKolev, D.D.KolevKrantz, H.H.KrantzKreykenbohm, I.I.KreykenbohmKudela, K.K.KudelaKurihara, Y.Y.KuriharaKusenko, A.A.KusenkoKuznetsov, E.E.KuznetsovLA BARBERA, ANTONINOANTONINOLA BARBERALachaud, C.C.LachaudLahmar, H.H.LahmarLakhdari, F.F.LakhdariLarson, R.R.LarsonLarsson, O.O.LarssonLee, J.J.LeeLicandro, J.J.LicandroLópez Campano, L.L.López CampanoMACCARONE, MARIA CONCETTAMARIA CONCETTAMACCARONEMackovjak, S.S.MackovjakMahdi, M.M.MahdiMaravilla, D.D.MaravillaMarcelli, L.L.MarcelliMarcos, J. L.J. L.MarcosMarini, A.A.MariniMarszał, W.W.MarszałMartens, K.K.MartensMartín, Y.Y.MartínMartinez, O.O.MartinezMartucci, M.M.MartucciMasciantonio, G.G.MasciantonioMase, K.K.MaseMastafa, M.M.MastafaMatev, R.R.MatevMatthews, J. N.J. N.MatthewsMebarki, N.N.MebarkiMedina-Tanco, G.G.Medina-TancoMendoza, M. A.M. A.MendozaMenshikov, A.A.MenshikovMerino, A.A.MerinoMeseguer, J.J.MeseguerMeyer, S. S.S. S.MeyerMimouni, J.J.MimouniMiyamoto, H.H.MiyamotoMizumoto, Y.Y.MizumotoMonaco, A.A.MonacoMorales de los Ríos, J. A.J. A.Morales de los RíosMoretto, C.C.MorettoNagataki, S.S.NagatakiNaitamor, S.S.NaitamorNapolitano, T.T.NapolitanoNaslund, W.W.NaslundNava, R.R.NavaNeronov, A.A.NeronovNomoto, K.K.NomotoNonaka, T.T.NonakaOgawa, T.T.OgawaOgio, S.S.OgioOhmori, H.H.OhmoriOlinto, A. V.A. V.OlintoOrleański, P.P.OrleańskiOsteria, G.G.OsteriaPAGLIARO, ANTONIOANTONIOPAGLIAROPainter, W.W.PainterPanasyuk, M. I.M. I.PanasyukPanico, B.B.PanicoPasqualino, G.G.PasqualinoParizot, E.E.ParizotPark, I. H.I. H.ParkPastircak, B.B.PastircakPatzak, T.T.PatzakPaul, T.T.PaulPérez-Grande, I.I.Pérez-GrandePerfetto, F.F.PerfettoPeter, T.T.PeterPicozza, P.P.PicozzaPindado, S.S.PindadoPiotrowski, L. W.L. W.PiotrowskiPIRAINO, SANTINASANTINAPIRAINOPlacidi, L.L.PlacidiPlebaniak, Z.Z.PlebaniakPliego, S.S.PliegoPollini, A.A.PolliniPolonski, Z.Z.PolonskiPopescu, E. M.E. M.PopescuPrat, P.P.PratPrévôt, G.G.PrévôtPrieto, H.H.PrietoPuehlhofer, G.G.PuehlhoferPutis, M.M.PutisRabanal, J.J.RabanalRadu, A. A.A. A.RaduReyes, M.M.ReyesRezazadeh, M.M.RezazadehRicci, M.M.RicciRodríguez Frías, M. D.M. D.Rodríguez FríasRodencal, M.M.RodencalRonga, F.F.RongaRoudil, G.G.RoudilRusinov, I.I.RusinovRybczyński, M.M.RybczyńskiSabau, M. D.M. D.SabauSáez Cano, G.G.Sáez CanoSagawa, H.H.SagawaSahnoune, Z.Z.SahnouneSaito, A.A.SaitoSakaki, N.N.SakakiSalazar, H.H.SalazarSanchez Balanzar, J. C.J. C.Sanchez BalanzarSánchez, J. L.J. L.SánchezSantangelo, A.A.SantangeloSanz-Andrés, A.A.Sanz-AndrésSanz Palomino, M.M.Sanz PalominoSaprykin, O.O.SaprykinSarazin, F.F.SarazinSato, M.M.SatoSchanz, T.T.SchanzSchieler, H.H.SchielerScotti, V.V.ScottiSelmane, S.S.SelmaneSemikoz, D.D.SemikozSerra, M.M.SerraSharakin, S.S.SharakinShimizu, H. M.H. M.ShimizuShinozaki, K.K.ShinozakiShirahama, T.T.ShirahamaSpataro, B.B.SpataroStan, I.I.StanSugiyama, T.T.SugiyamaSupanitsky, D.D.SupanitskySuzuki, M.M.SuzukiSzabelska, B.B.SzabelskaSzabelski, J.J.SzabelskiTajima, N.N.TajimaTajima, T.T.TajimaTakahashi, Y.Y.TakahashiTakami, H.H.TakamiTakeda, M.M.TakedaTakizawa, Y.Y.TakizawaTalai, M. C.M. C.TalaiTenzer, C.C.TenzerThomas, S. B.S. B.ThomasTibolla, O.O.TibollaTkachev, L.L.TkachevTokuno, H.H.TokunoTomida, T.T.TomidaTone, N.N.ToneToscano, S.S.ToscanoTraïche, M.M.TraïcheTsenov, R.R.TsenovTsunesada, Y.Y.TsunesadaTsuno, K.K.TsunoTubbs, J.J.TubbsTurriziani, S.S.TurrizianiUchihori, Y.Y.UchihoriVaduvescu, O.O.VaduvescuValdés-Galicia, J. F.J. F.Valdés-GaliciaVALLANIA, PIEROPIEROVALLANIAVankova, G.G.VankovaVigorito, C.C.VigoritoVillaseñor, L.L.VillaseñorVlcek, B.B.Vlcekvon Ballmoos, P.P.von BallmoosVrabel, M.M.VrabelWada, S.S.WadaWatanabe, J.J.WatanabeWatts, J., Jr.J., Jr.WattsWeber, M.M.WeberWeigand Muñoz, R.R.Weigand MuñozWeindl, A.A.WeindlWiencke, L.L.WienckeWille, M.M.WilleWilms, J.J.WilmsWłodarczyk, Z.Z.WłodarczykYamamoto, T.T.YamamotoYang, J.J.YangYano, H.H.YanoYashin, I. V.I. V.YashinYonetoku, D.D.YonetokuYoshida, S.S.YoshidaYoung, R.R.YoungZgura, I. S.I. S.ZguraZotov, M. Yu.M. Yu.ZotovZuccaro Marchi, A.A.Zuccaro Marchi2021-02-022021-02-0220181748-0221http://hdl.handle.net/20.500.12386/30154EUSO-Balloon is a pathfinder mission for the Extreme Universe Space Observatory onboard the Japanese Experiment Module (JEM-EUSO). It was launched on the moonless night of the 25th of August 2014 from Timmins, Canada. The flight ended successfully after maintaining the target altitude of 38 km for five hours. One part of the mission was a 2.5 hour underflight using a helicopter equipped with three UV light sources (LED, xenon flasher and laser) to perform an inflight calibration and examine the detectors capability to measure tracks moving at the speed of light. We describe the helicopter laser system and details of the underflight as well as how the laser tracks were recorded and found in the data. These are the first recorded laser tracks measured from a fluorescence detector looking down on the atmosphere. Finally, we present a first reconstruction of the direction of the laser tracks relative to the detector.ELETTRONICOenArticle10.1088/1748-0221/13/05/P050232-s2.0-85048075268000432931100003https://iopscience.iop.org/article/10.1088/1748-0221/13/05/P050232018JInst..13P5023AFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation