Baader Fringe Killer Filter 1.25" - USED

The Baader Fringe Killer Overview

FACTS AND FIGURES

• Removes blue fringing as well as red fringing above 700nm.
• Forms in the range between 450 to 480 nm with a plateau at around 50% transmission rate, the coating becomes more complex to produce than even the narrowest Nebula filters.
• Achieved in the passband the highest transmission rate of all previously available colour fringe, whether filter or correction lens. From 486-656 nm all relevant deep sky wavelengths are completely transmitted. Visually this is enough light for even high magnifications.
• Built-in IR-cut filter for the range 656-1150 nm; perfect for the CCD and Digital Camera-use in deep sky, moon or planets.

THE HIGHLIGHTS OF THE BAADER FRINGE KILLER

• Provides the brightest image of all industrially produced colour error correction systems. Thus the Fringe Killer is a must for even the smallest telescopes.
• Removes blue fringing as well as red fringing above 700nm.
• Cancels the devastating intensity of the disturbing purple fringing in a new form, which was never implemented to date in astronomical filters
• Even weak nuances remain clearly visible in the planet due to the excellent colour balance.
• Planeoptically polished for perfect sharpness, even when the filter is assembled well before the focal point (or binocular digital camera insert).
• No deterioration of resolution with high magnification - as would happen with flame-polished (raw polished) glass, commonly used for all sorts of filters!
• Hight Quality Coating: Plasma-enhanced dielectric coatings result in hard, scratch-resistant and waterproof filters. Almost 50 layers on either side, carefully positioned as not to impair the optical quality of the substrate surface
• Makes the performance of a simple f/8 economy refractor look like a classic f/15 Fraunhofer achromat. See it to believe it!