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ASDF Standard schemas
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ASDF Standard schemas
  • Low-level file layout
  • The tree in-depth
  • Versioning Conventions
  • ASDF Schemas
  • ASDF Specification Resources
    • Core
      • core/asdf-1.1.0
      • core/complex-1.0.0
      • core/datatype-1.0.0
      • core/extension_metadata-1.0.0
      • core/ndarray-1.1.0
      • core/constant-1.0.0
      • core/software-1.0.0
      • core/history_entry-1.0.0
      • core/integer-1.1.0
      • core/externalarray-1.0.0
    • Astronomy
      • fits/fits-1.1.0
      • table/column-1.1.0
      • table/table-1.1.0
      • time/time-1.2.0
      • unit/unit-1.0.0
      • unit/defunit-1.0.0
      • unit/quantity-1.2.0
    • Legacy schemas
      • core/asdf-1.0.0
      • core/column-1.0.0
      • core/integer-1.0.0
      • core/ndarray-1.0.0
      • core/subclass_metadata-1.0.0
      • core/table-1.0.0
      • fits/fits-1.0.0
      • time/time-1.0.0
      • time/time-1.1.0
      • unit/quantity-1.1.0
      • asdf-schema-1.1.0
      • transform/transform-1.0.0
      • transform/domain-1.0.0
    • YAML Schema
    • core-1.0.0
    • core-1.1.0
    • core-1.2.0
    • core-1.3.0
    • core-1.4.0
    • core-1.5.0
    • core-1.6.0
    • astronomy-1.0.0
  • Known limits
  • Changes
  • Appendix B: Developer API
    • DirectoryResourceMapping
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AstronomyΒΆ

The ASDF specification contains a few astronomy-specific tags that are optional but maintained as part of the specification (for historical reasons). These include:

  • fits/fits-1.1.0
  • table/column-1.1.0
  • table/table-1.1.0
  • time/time-1.2.0
  • unit/unit-1.0.0
  • unit/defunit-1.0.0
  • unit/quantity-1.2.0
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fits/fits-1.1.0
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core/externalarray-1.0.0
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Last updated on Feb 05, 2026