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Baader Fringe Killer Color Correction-Filter

In Stock - Ships Today if Ordered by 3pm! (Mon - Fri)

FedEx Ground Order Cutoff is 11am

Filter
2458370
$129

*Size


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  • The fringe killer blocks defocused light in the blue spectrum, as well as in the red part of the spectrum (IR) above 700nm, usually seen in small achromat telescopes.
  • The smaller details on craters of the Moon and planetary surfaces are so much more visible!
  • Planeoptically polished; can be used well before the focal point of the optical system, without any loss of sharpness, as a single filter in front of a binocular for afocal projection with digital cameras.
  • Provides the brightest picture of all industrially manufactured colour error-correction systems. Thus, the Fringe-Killer is a must for small refractors!

Planeoptically polished with Phantom Group Coating

Baader Fringe Killer
Baader Fringe Killer

The Fringe-Killer (Fringe = colour fringing) blocks unfocused light in the red part of the spectrum (IR) uo to 100% - but above all suppresses over 50% of the interfering stray light in the blue spectral range - without changing the colour impression of the image.

The most delicate details of lunar craters and planetary surfaces can be seen with a much higher contrast.

The Baader Fringe-Killer Color Correction-Filter prevents unwanted colour fringes in both the blue spectral range and in the NIR above 700 nm! The visual impact initially corresponds to a minus violet filter, as opposed to this but the image colour remains broadly balanced. In itself a contradiction in terms? It can only be implemented by applying modern DWDM plasma assisted coating technology, which allows the application of approximately 100 individual layers on a flat-optically polished face surface perfectly and reproducibly without compromising visual quality. This fine optical precision tool also allows inexpensive China-refractors to reach the promised imaging performance. The reduction of chromatic aberration corresponds to what is achieved by corrections-lens systems, which usually cost 20 times more.


Example of Sirius with and without the Fringe Killer
For comparison please click

The Baader Fringe Killer Overview

Facts and Figures

  • Is due to its construction both visually and photographically a very valuable aid
  • 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 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.
  • Above of 656 nm (H-alpha), at 660nm, the transmission sinks very fast. In the NIR at 670nm, transmission is already down to 50%, and at 690nm it is already close to zero. The NIR is fully blocked up to 1150nm. This way, details on planets are shown much clearer when using CCD/CMOS-cameras, too.
The clearly visible colour correction of the Baader Fringe Killer. For comparison please click
THE HIGHLIGHTS OF THE BAADER FRINGE KILLER COLOR CORRECTION-FILTER
  • 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.
  • In conjunction with an RG-610 Red Filter produces a narrowband Ha-pass filter with an only 70 nm wide windows and 95% light transmission - at an incredibly low price!
  • The combination with the Neodymium Skyglow Filter (with Phantom-Group-Coating) results in a balanced, breathtaking contrast to the observation of fine lunar and planetary details.
  • 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!

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

Items that have been opened, damaged or are otherwise unsaleable will be subject to a minimum 10% restocking fee, to be assessed by Telescopes Canada upon receipt of the returned goods

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Typographical Errors and Order Cancellations

Telescopes Canada reserves the right to cancel an order due to an error in pricing by Telescopes Canada or one of our suppliers, equipment being no longer obtainable, or other events which are out of our control.

Client-Initiated Cancellations

Client-initiated order cancellations are accepted prior to delivery of the equipment to the customer, thereafter it is a return.

Additional Information

Manufacturer Baader Planetarium
Weight (kg) 0.065
Transmission Range multiple bands (see spectral image)
Filter Thickness (without cell) 2 mm
AR-Coating Phantom Coating® Group, planeoptically polished
Filter Usage Color Correction, IR-Cut
Filter mounted Mounted (LPFC 6mm)
Type of Filter Bandpass
Single or Set? Single Filter
Filter shape round

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