Conceptual design of roof-pyramid wavefront sensor for GMACS on GMT

Tiago Giorgetti; Oswaldo Horikawa; Rodrigo Lima Stoetereau; Alexandre T. S. Mello; Rafael A. S. Ribeiro

doi:10.1117/12.3020062

27 August 2024 Conceptual design of roof-pyramid wavefront sensor for GMACS on GMT

Tiago Giorgetti, Oswaldo Horikawa, Rodrigo Lima Stoetereau, Alexandre T. S. Mello, Rafael A. S. Ribeiro

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 130973S (2024) https://doi.org/10.1117/12.3020062
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

This work presents the conceptual design of a wavefront sensor utilizing the double-roof pyramid prism proposed for the On-Instrument Wavefront Sensor (OIWFS) within the Giant Magellan Telescope Multi-Object Astronomical and Cosmological Spectrograph (GMACS). It details the design process, presents simulation methods and results to verify the sensor’s performance, and investigates the sensor’s precision and limits by the telescope primary segments tilt to be estimated. The results of the simulations show that the pyramidal sensor has sufficient sensitivity to measure misalignment between the primary segments of up to 3μrad with an error of less than 5% and proved to be effective in estimating the wavefront slope for these limits. The optical model generated images of the exit pupil on the detector in compliance with the precautions demonstrated regarding field rotation, lateral color distortions, differential distortions, and pupil misalignments. The mechanical model resulted in an instrument that allows a complete scan over the external field intended for the search for a guide star and a detailed mechanical design for the manufacture of the pyramidal prisms. Opto-mechanical COTS elements were presented to exemplify the system. This contribution adds to the ongoing development of adaptive optics technology for GMACS on the Giant Magellan Telescope (GMT).

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tiago Giorgetti, Oswaldo Horikawa, Rodrigo Lima Stoetereau, Alexandre T. S. Mello, and Rafael A. S. Ribeiro "Conceptual design of roof-pyramid wavefront sensor for GMACS on GMT", Proc. SPIE 13097, Adaptive Optics Systems IX, 130973S (27 August 2024); https://doi.org/10.1117/12.3020062

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