Citizen science with colour blindness: A case study on the Forel-Ule scale

• Olivier Burggraaff ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: burggraaff@strw.leidenuniv.nl

  Affiliations Leiden Observatory, Leiden University, Leiden, The Netherlands, Institute of Environmental Sciences (CML), Leiden University, Leiden, The Netherlands

  https://orcid.org/0000-0002-2487-4533

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• Sanjana Panchagnula,

  Roles Conceptualization, Investigation, Visualization, Writing – original draft, Writing – review & editing

  Affiliations Leiden Observatory, Leiden University, Leiden, The Netherlands, Laboratory for Astrophysics, Leiden Observatory, Leiden University, Leiden, The Netherlands

  https://orcid.org/0000-0002-7583-1672

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• Frans Snik

  Roles Funding acquisition, Methodology, Visualization, Writing – review & editing

  Affiliation Leiden Observatory, Leiden University, Leiden, The Netherlands

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