1. Fresnel Diffractive Arrays Imagery Sky observation Targets Presented by Truswin Raksasataya

2. Agenda Sky validation and its objectives FDAI Gen II configurations FDAI Gen II Estimation First Results Future Targets

3. Sky observation for Prototype II To test Fresnel Imagery with real astrophysical objects. To validate the performance of Fresnel Imagery with the ground support of 20 meter long focal To test the operation on field usages.

4. What’s changes  Prototype Gen II and Current state  Version 1.5.1  What’s change  But..  Effective area is approximately the same as Prototype 1, Chromatic Correction

5. Recent Results from Sky observation FDAI 1.5.1 No Tilt tip compensation for atmosphere turbulance

6. Estimation of Fresnel Dynamic Range

7. First Results from Sky observation Fresnel Imagery version 1.5.1 during transferred state: Single Stars Vega : Magnitude: 0

8. Recent Results from Sky observation Single Star : Deneb Magintude: 1 From FDAI 1.5.1

9. Recent Results from Sky observation Epsilon Lyr ----------------------------------- Epsilon 1 AB Magnitude : 1 Separation 2.6 arcsec Epsilon 2 AB Magnitude : 1 Separation 2.3 arcsec

10. Recent Results from Sky observation STT 433 : (Upsilon Cyg) Mag(Separation,arcsec): 4.4, 10(15”), 9,9(21”) STT 433 C STT 433 B STT 433 A

11. Recent Results from Sky observation STF 2767 Magnitude: 4.2, 8.7 Separation: 6 arcsec B A

12. Recent Results from Sky observation Results form Ground validation from FDAI 1.5.1 Epsilon Lyr 1 AB Epsilon Lyr 2 AB STT 433 STF 2767

13. Future Targets High Dynamic Ranges Targets : Binary systems Double Stars: Sirius AB, Procyon AB, AGC 9AB etc. Extended Fields: Solar system objects Mars and its satellites : High Resolution image, separation of its satellites. Pluton and Charon: Challenge!

14. Future Targets Double Stars Procyon AB SiriusAB BUP 9AB BU 633AB AGC 9AB Xi Peg

15. Future Targets Solar system objects Mars and its Satellites

16. Mars magnitude profile

17. Mars’ Separations

18. THANK YOU FOR YOU ATTENTION ANY QUESTIONS ARE WELCOME T