Selecting optimal glass combinations for atmospheric dispersion correctors

Jacob Pember*, Christian Schwab, Davide Greggio

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

The correction of differential atmospheric dispersion is important for a broad range of astronomical observations, from high precision coronagraphy and astrometry to extremely stable fiber coupling in Doppler spectroscopy. The wide availability of adaptive optics systems, and the push to bluer wavelengths in particular, requires very highperformance designs. The choice of glasses for typical atmospheric dispersion corrector (ADC) configurations is a surprisingly challenging task, and depends on a range of parameters, in particular the wavelength range, with considerations on the level of dispersion correction as well as transmission and mechanical parameters. Finding the optimal glass combination with optical raytracing programs is time consuming, and it is hard to verify the solution is optimal. We describe a numerical method that uses Python to evaluate all possible unique combinations of two glasses from an input catalogue. This enables easy identification of potentially good candidate pairs for further, detailed investigation.

Original languageEnglish
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV
EditorsRamón Navarro, Roland Geyl
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-7
Number of pages7
ISBN (Electronic)9781510636903
ISBN (Print)9781510636897
DOIs
Publication statusPublished - 13 Dec 2020
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020 - Virtual, Online, United States
Duration: 14 Dec 202022 Dec 2020

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume11451
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020
CountryUnited States
CityVirtual, Online
Period14/12/2022/12/20

Keywords

  • ADCs
  • analytic glass selection
  • atmospheric dispersion correctors
  • Python

Fingerprint Dive into the research topics of 'Selecting optimal glass combinations for atmospheric dispersion correctors'. Together they form a unique fingerprint.

Cite this