ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
----------------------------------------------

CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: May 08 (Thursday) 14:00


András Péter Joó (Konkoly Observatory): Mechanical design for the cold optics 
of NOTT, a nulling interferometer for VLTI

ESO’s Very Large Telescope Interferometer (VLTI) has long been at the 
forefront of astrophysical research and instrumentation. Its new visitor 
instrument suite, Asgard, representing a leap forward in capabilities, will 
offer high angular resolution and high contrast imaging. Among its four 
natively collaborating instruments is NOTT, a nulling interferometer 
dedicated to imaging nearby young giant exoplanets in the L’ band (3.5-4.0 
microns), with its cold optics designed to operate at 90K. We present the 
mechanical design for NOTT's cold optics, encompassing the mounting for 
collimation, polarization, and imaging, along with a preliminary mount design 
for the detector. One of its main challenges is to ensure optimal alignment 
at the operating temperature and achieve precise focus at the detector plane. 
A critical requirement is to avoid stress on optical elements during and 
after the cooling process, to maintain their geometry within tolerances. Our 
devised system exerts minimal f
 orce to maintain axial alignment of the optics while facilitating necessary 
adjustments to achieve focal precision at the detector plane.


https://konkoly.hu/k-szeminariumok

The seminar will be held live in the Detre hall with audience, but also 
streamed online via Zoom. If you are unable to attend the presentation in 
person, you can join us via this link
https://us06web.zoom.us/j/82806911982?pwd=SVZpT0syQ1J6dHBvSkF4N2dXNEQ0dz09
or the meeting ID: 828 0691 1982 and passcode: 206265



Everyone is welcome!

Krisztián Vida, Ramon Brasser
organizers
https://konkoly.hu/k-szeminariumok