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

    2 Citations (Scopus)

    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
    Country/TerritoryUnited States
    CityVirtual, Online
    Period14/12/2022/12/20

    Keywords

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

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