Design of a precision calibration unit for Keck NIRC2 AO instrument

Zeren Lin; Tarun Kumar; Xun Chen; Jessica Lu; Peter Wizinowich; Scott Lilley; Ed Wetherell; Nicholas McConnell

doi:10.1117/12.2561958

13 December 2020 Design of a precision calibration unit for Keck NIRC2 AO instrument

Zeren Lin, Tarun Kumar, Xun Chen, Jessica Lu, Peter Wizinowich, Scott Lilley, Ed Wetherell, Nicholas McConnell

Proceedings Volume 11448, Adaptive Optics Systems VII; 1144879 (2020) https://doi.org/10.1117/12.2561958
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

High-precision astrometry has the potential to address questions in planet formation, black hole science, Galactic structure, and more. However, in order to achieve a precision of sub-milli arcseconds (mas), we need a calibration method better than the current techniques such as on-sky calibration using calibrated stellar or stellar cluster systems, which have a precision of $sim$ 1 mas. Precision calibration unit with a regular grid of photo-lithographically manufactured pinholes combined with self-calibration techniques, on the other hand, is a new and innovative way to potentially achieve a precision of sub-mas over the entire field of view. This technique is beneficial to adaptive optic (AO) instruments for future telescopes like the Thirty Meter Telescope (TMT). In this work, we present our design for a new astrometric calibration unit to feed the NIRC2 AO instrument at the W. M. Keck Observatory. It allows calibration over a large field of view of $47^{''} times 47^{''}$, spat

Conference Presentation

Citation Download Citation

Zeren Lin, Tarun Kumar, Xun Chen, Jessica Lu, Peter Wizinowich, Scott Lilley, Ed Wetherell, and Nicholas McConnell "Design of a precision calibration unit for Keck NIRC2 AO instrument", Proc. SPIE 11448, Adaptive Optics Systems VII, 1144879 (13 December 2020); https://doi.org/10.1117/12.2561958

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