DEDICATED TO NANNI NANNI EVENTS

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Universidade de São Paulo The ASTRI telescope at Serra La Nave and its potential adaptation to SETI by Osvaldo Catalano SETI Meeting – MILAN 5/06/2017

ASTRI TELESCOPE A MADE IN ITALY INNOVATIVE TELESCOPE Small Size Telescope proposed for CTA OPTICS dual-mirror Schwarzschild-Couder CAMERA Advanced Detection Systems SiPM (Silicon PhotoMultiplier) Novel signal processing electronics ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Acronym invented by NANNI

OPTICS ASTRI INNOVATIVE TECHNOLOGY CITIROC ASIC SiPM TILE AND FRONT END ELECTRONICS CITIROC ASIC

ASTRI TECHNICAL CHARACTERISTICS H.E.S.S.

ASTRI CAMERA After the integration and a first verification in lab...

Camera @SLN The Camera installed on the ASTRI Telescope @Serra La Nave

OPTICAL SETI WITH ASTRI ????? 25 ns INTEGRATION TIME

USEFULL OPTICAL RANGE: 280  650 nm OPTICAL SETI WITH ASTRI ????? ASTRI Camera Spectral Response FILTER TOTAL USEFULL OPTICAL RANGE: 280  650 nm COMPLIANT WITH KNOWN lasers spectral lines

OPTICAL SETI WITH ASTRI ????? I AGREE ASTRI FOV 11° ASTRI COMPLIANT VERY INTRIGUING WELCOME THINK ABOUT THINK ABOUT

OPTICAL SETI WITH ASTRI ?????

OPTICAL SETI WITH ASTRI ????? An optical SETI signal would be pointlike and concentrated to one or a couple of pixels Hard to say and demonstrate true with a single telescope (noise, instrumental noise,….) SIMULATED NSB AND OVERTHRESHOLD PIXEL

OPTICAL SETI WITH ASTRI ????? MUCH EASIER WITH 3 TELESCOPES SIGNALS COHERENT IN SPACE AND TIME Eliminate NSB and instrumental noise accidental coincidence SIMULATED NSB AND OVERTHRESHOLD PIXEL

OPTICAL SETI WITH ASTRI ????? TRIGGER NEEDS FOR SETI here it is

NO PARASITIC TRIGGER OPTICAL SETI WITH ASTRI ????? TOPO TRIGGER SETI TRIGGER TOPO TRIGGER NO PARASITIC TRIGGER

CONCLUSION OPTICAL SETI WITH ASTRI ????? Search for Optical SETI with ASTRI type Telescopes feasible Dedicated and available trigger with CITIROC FE ASIC in parallel to Topological trigger (no parasitic trigger) Large FOV (11°) and resolution time (25 ns) accessible for sky searching Needed at least 3 Telescopes for disentangling accidental coincidences