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Winter Haloes, by Thomas Gigl, Germany

Gigl, Thomas; IAU, OAE


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  <identifier identifierType="DOI">10.5281/zenodo.5418795</identifier>
  <creators>
    <creator>
      <creatorName>Gigl, Thomas</creatorName>
      <givenName>Thomas</givenName>
      <familyName>Gigl</familyName>
    </creator>
    <creator>
      <creatorName>IAU, OAE</creatorName>
      <givenName>OAE</givenName>
      <familyName>IAU</familyName>
    </creator>
  </creators>
  <titles>
    <title>Winter Haloes, by Thomas Gigl, Germany</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2021</publicationYear>
  <subjects>
    <subject>Astrophotography</subject>
    <subject>Sun/Moon haloes</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2021-08-25</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Image">Photo</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/5418795</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsIdenticalTo" resourceTypeGeneral="Image">https://www.iau.org/public/images/detail/ann21047q/</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.5418794</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/astro4edu</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Second place in the 2021 IAU OAE Astrophotography Contest, category Sun/Moon haloes.&lt;/p&gt;

&lt;p&gt;Captured in Jochberg located in the famous Austrian ski-region of Tirol, this image shows multiple features related to ice halos, which are a more common appearance around the sun, due to its brightness, than the moon. External and internal reflection of sun rays from ice crystal faces and within different types of ice crystals lead to these halo related phenomena. The 22&amp;deg; halo encircles the sun, with two bright spots at the edge called Sundogs, Parhelia or Mock Suns observed to the left and right at the same height as the sun. The horizontal white band called the parhelic circle, named after the sun god Helios, passes through the sun and the Sundogs at the same angular elevation. An Upper tangent arc, a suncave parry arc and a lower tangent arc are also seen touching the top and bottom of the 22&amp;deg; halo. An upside down rainbow like arc or the circumzenithal arc is seen touching the bright supralateral arc, both of which are less frequently observed.&lt;/p&gt;

&lt;p&gt;Credit:&amp;nbsp;Thomas Gigl/IAU OAE&lt;/p&gt;</description>
  </descriptions>
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