Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)

Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)

Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)

B&H # LU12BF2ST2TL MFR # LS12CAKMDS
Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)

Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)

Show MoreLess

Close

Now Viewing:

No Longer Available

Product Highlights

  • Highlights Sunspots and Active Areas
  • 12mm Aperture Filter
  • Straight Tube Configuration
  • For up to 100mm Aperture OTAs
  • Fits 2" Focusers
  • Accepts 1.25" Eyepieces and Accessories
  • Use with 1200mm Focal Length OTAs
Show moreShow less

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.

Promotion
  • 1Description

Specifically engineered for the 393.4nm wavelength, Lunt Solar Systems' 12mm Calcium-K Solar Eyepiece Filter is primarily used to more clearly resolve sunspots and active areas of the Sun. This wavelength is slightly outside the visible spectrum on the ultraviolet side and highlights areas that are slightly lower and cooler than the layer viewed using hydrogen-alpha filters, so this Ca-K filter makes an ideal companion accessory to give observers a more diverse viewing experience. The straight tube viewing configuration fits into 2" focusers, and accepts any user-supplied 1.25" eyepieces and accessories while providing a blocking 12mm aperture. This model is recommended for use with optical tube assemblies (OTAs) with a focal length of up to 1200mm.

In the Box
Lunt Solar Systems 12mm Calcium-K Solar Eyepiece Filter (12mm Blocking, 2" Straight)
  • Limited Five-Year Warranty
  • Table of Contents
    • 1Description
    Type Calcium-K
    12mm aperture
    Size Barrel: 2"
    Eyepiece holder: 1.25"
    Application Solar observation
    393.4 nm wavelength light
    Be the first to review this item
    See any errors on this page? Let us know.
    vuzqbbtq