DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)

DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)

DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)

B&H # DACK2AUNI MFR # CK2AUNI
DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)

DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)

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Product Highlights

  • Highly-Precise Research-Grade Filter
  • Anti-Reflection Coated BK7 Glass
  • High-Sensitivity Tuning for Photography
  • RS-232 Serial Port for Computer Control
  • Recommended for use at f/15-f/20
  • Runs on 12 VDC Power
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SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

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  • 1Description

Designed and engineered as a research-grade solar-viewing instrument, Daystar Filters' 2.0Å Calcium II K-Line Quantum Filter is built with anti-reflection coated BK7 glass and highly-precise electronic tuning. The blue calcium k-line is sensitive to magnetic fields, so magnetically-active areas and structures show in high-contrast against the surrounding chromosphere; and this filter reveals complex temporal variations, also in the chromosphere.

Since much solar research is conducted remotely, there is an integrated RS-232 serial port that enables remote viewing of the filter's display and control of its tuning. Its concentration on the K-line makes it ideal for solar photography or remote image transmission due to the sensitivity of many imaging sensors to the K-line. This sensitivity allows imaging systems to resolve the different layers of the Sun's chromosphere at focal ratios between f/15 to f/20. The filter runs on 12 VDC power and comes with a 6' power cord with a set of international outlet plugs for US, EU, UK, and Australia.

UPC: 702730990476
In the Box
DayStar Filters 2.0Å Calcium II K-Line Quantum Filter (PE-Grade)
  • 12 VDC 6' Power Cord
  • Set - International Wall Plugs
  • Limited 10-Year Warranty
  • Table of Contents
    • 1Description
    Type Calcium II K-line
    Bandpass 2.0 Å
    3933 Å
    Size 1.25" / 3.2 cm, clear aperture
    Grade Research-grade
    Multi-Coated Yes
    Application Solar viewing
    Dimensions Diameter: 3.0" / 7.6 cm
    Length: 1.7" / 4.3 cm
    Length, with filter mounting plates: 2.2" / 5.6 cm
    Weight 16.0 oz / 453.6 g
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