Baader Fringe-Killer Filter - Round Mounted - FKK- type-telescope-eyepieces It will work with any

It will work with any barrel design: smooth

About the TeleVue Eyepiece Barrel Extender - 2"

Along with great imaging performance

For the Clickstop Zoom

Eye Relief: 17

Baader Fringe-Killer Filter - Round Mounted - FKK- type-telescope-eyepieces It will work with anyAbout the Baader Fringe Killer Filter Round Mounted Achromat owners rejoice! Baader Planetarium has taken minus violet filtration to a new level. The Baader Fringe Killer Filter brings a type of filtration, never before seen, to the amateur. Rather than simply trimming the shorter wavelengths at a chosen wavelength and slope like all other minus violet filters, the Fringe Killer carefully attenuates a specific region of the spectrum. This allowed