Calcium-K Solar Filters

Calcium K filters are used to study the 393.4nm emission line just at the edge of the visible spectrum in a layer of the chromosphere that is slightly lower and cooler than the layer viewed in Hydrogen-alpha.

  • Daystar Calcium H Line Filter CH5ATS
  • Daystar Calcium H Line Filter CH5ATS

  • The Calcium H line is much closer to the visual spectrum and easier to see in high contrast violet color for visual observations. read more...
  • Our price: $4000.00

  • Daystar Calcium K-line Filter CK2AUNI
  • Daystar Calcium K-line Filter CK2AUNI

  • The Calcium K emission line displays areas of super granulation cells that are brightest and strongest in areas of high magnetic fields, such as sunspot activity and active regions. read more...
  • Our price: $5669.50

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