WEAVE spectrograph cameras: the polishing of the spherical lenses

Rafael Izazaga; Esperanza Carrasco; Andrea Hidalgo; Daniel Aguirre; Elena Terlevich; Roberto Terlevich; Gavin Dalton; Scott Trager; J. Alfonso L. Aguerri; Piercarlo Bonifacio; Antonella Vallenari; Don Carlos Abrams; Kevin Middleton

doi:10.1117/12.2314124

10 July 2018 WEAVE spectrograph cameras: the polishing of the spherical lenses

Rafael Izazaga, Esperanza Carrasco, Andrea Hidalgo, Daniel Aguirre, Elena Terlevich, Roberto Terlevich, Gavin Dalton, Scott Trager, J. Alfonso L. Aguerri, Piercarlo Bonifacio, Antonella Vallenari, Don Carlos Abrams, Kevin Middleton

Author Affiliations +

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 107063J (2018) https://doi.org/10.1117/12.2314124
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

WEAVE is the new wide field multi-object and integral field survey facility for the prime focus of the 4.2 m William Herschel Telescope. WEAVE fiber-fed spectrograph offers two resolutions, R ~ 5000 and 20,000. The dual-beam spectrograph has two cameras: the blue one optimized for the wavelength interval of 366 - 606 nm and the red one for 579 - 959 nm. Each camera is formed by eight lenses, one aspherical and seven spherical. The lenses of the red camera are identical to the lenses of the blue camera only differentiated by the anti-reflection coating wavelength range. The diameter of the largest surface is 320 mm while of the smallest is 195 mm. INAOE, as a member of the collaboration is responsible of the manufacturing of the 14 spherical lenses and the collimator mirror. Here, we describe the main characteristics of WEAVE high precision cameras lenses, the manufacturing challenges giving the combination of OHARA glasses properties, dimensions and specifications. We discuss the solutions developed to achieve the very demanding specifications.

Citation Download Citation

Rafael Izazaga, Esperanza Carrasco, Andrea Hidalgo, Daniel Aguirre, Elena Terlevich, Roberto Terlevich, Gavin Dalton, Scott Trager, J. Alfonso L. Aguerri, Piercarlo Bonifacio, Antonella Vallenari, Don Carlos Abrams, and Kevin Middleton "WEAVE spectrograph cameras: the polishing of the spherical lenses ", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107063J (10 July 2018); https://doi.org/10.1117/12.2314124

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
20 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polishing

Lenses

Glasses

Interferometers

Manufacturing

Surface finishing

Optical inspection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years