1. DEDICATED TO NANNI
NANNI EVENTS

2. 1

3. 2

4. 3

5. 4

6. 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

7. 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

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

9. ASTRI TECHNICAL CHARACTERISTICS
H.E.S.S.

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

11.
The Camera installed on the ASTRI La Nave

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

13. 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

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

15. OPTICAL SETI WITH ASTRI ?????

16. 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

17. 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

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

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

20. 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