Integration, alignment, and verification of the ESPRESSO Front-End

G. Pariani; M. Aliverti; M. Moschetti; M. Landoni; M. Riva; F. M. Zerbi; D. Mégevand; S. Cristiani; F. Pepe

doi:10.1117/12.2233997

9 August 2016 Integration, alignment, and verification of the ESPRESSO Front-End

G. Pariani, M. Aliverti, M. Moschetti, M. Landoni, M. Riva, F. M. Zerbi, D. Mégevand, S. Cristiani, F. Pepe

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 99087B (2016) https://doi.org/10.1117/12.2233997
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

ESPRESSO, Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations, is now under the assembly, integration and verification phase and will be installed beginning next year at Paranal Observatory on ESO's Very Large Telescopes. The Front End is the modular system in the Combined Coudé Laboratory receiving the light from the four VLT Units, providing the needed connection between the input signal, i.e., object light, sky light, and calibration light, to feed the spectrograph through optical fibers. The modular concept of the FE Units drove the system design and the alignment workflow. We will show the integration method of the single FE modules adopted to guarantee the necessary repeatability between the different Units. The performances of the system in terms of image quality and encircled energy in the observed point spread function are reported. Finally, the strategy followed in the Paranal Combined Coudè Laboratory to define the convergence point of the four UTs is described, along with the procedure used to align the ground plates, the main structure, and the mode selector.

Citation Download Citation

G. Pariani, M. Aliverti, M. Moschetti, M. Landoni, M. Riva, F. M. Zerbi, D. Mégevand, S. Cristiani, and F. Pepe "Integration, alignment, and verification of the ESPRESSO Front-End", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99087B (9 August 2016); https://doi.org/10.1117/12.2233997

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available