Manufacturer: Baader
Product number: BA2458375

EUR 133,00


incl. 19 % VAT (DE)  
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Fringe Killer 2" - Contrast enhancement and reduction of false colour at refractors
The Fringe Killer is a further development of the simple minus violet filter. It lets more of the blue light pass thus causing less colour shift. Additionally, contrast is enhanced significantly.


The Fringe Killer is recommended for the following telescopes
For every achromatic refractor from 70 to 150 mm aperture when the user wants to reduce the false colour inherent to the system and increase contrast.


The Fringe Killer´s effect at the example of Sirius

The upper row shows already after 1/10 second integration time the blue colour fringe as a halo around the star.

With the Fringe Killer (lower column), the blue halo is significantly reduced thus enhancing contrast and resolution.



The Fringe Killer´s effect at daytime use and photography
The image below is an impressive demonstration of this filter´s contrast enhancement - left picture without, right picture with Fringe Killer.


Thread Diameter:2"
Filter thickness:2 mm
Low profile filtercell:height only 6 mm
Fringe Killer



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Reviews

Written by Hans-Jürgen Senftleben
on 2022-02-28

"Den Filter habe ich als Zubehör für einen achromatischen Refraktor gekauft. Bisher konnte ich noch keine Beobachtung am Mond durchführen, um überprüfen zu können, ob der Farbfehler tatsächlich minimiert wurde, aber an hellen Sternen wie Sirius und Rigel konnte ich keinen Farbsaum mehr feststellen. Für mich ein super Produkt. Das Teleskop ist ein 102/660 Refraktor von Celestron."

Written by Boris Markhel
on 2017-10-19

"The filter is very good quality. Many thanks"