Fresnel Diffractive Arrays Imagery
Sky observation Targets
Presented by Truswin Raksasataya
Agenda
• Sky validation and its objectives• FDAI Gen II configurations• FDAI Gen II Estimation• First Results• Future Targets
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.
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
Recent Results from Sky observation
• FDAI 1.5.1
No Tilt tip compensation for atmosphere turbulance
Estimation of Fresnel Dynamic Range
First Results from Sky observationFresnel Imagery version 1.5.1 during transferred state:
Single StarsVega :Magnitude: 0
Recent Results from Sky observation
• Single Star : Deneb• Magintude: 1
From FDAI 1.5.1
Recent Results from Sky observation
Epsilon Lyr-----------------------------------• Epsilon 1 AB
Magnitude : 1 Separation 2.6 arcsec
• Epsilon 2 ABMagnitude : 1 Separation 2.3 arcsec
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
Recent Results from Sky observation
• STF 2767• Magnitude: 4.2, 8.7• Separation: 6 arcsec
B
A
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
Future Targets
• High Dynamic Ranges Targets : Binary systemsDouble 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!
Future Targets• Double Stars
Procyon AB
SiriusAB
BUP 9AB
BU 633AB
AGC 9AB
Xi Peg
Future Targets
• Solar system objects • Mars and its Satellites
THANK YOU FOR YOU ATTENTIONANY QUESTIONS ARE WELCOMET