Prices

Baader Fringe Killer - Achromat owners rejoice! Baader Planetarium has taken minus violet filtration to a new level. The Fringe Killer 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 Baader to tune the filter for maximum practical reduction of the most damaging defocused blue wavelengths, with only a faint yellow color shift - without dimming and lowering image contrast by resorting to reduction of the important green-yellow wavelengths to crudely restore an apparent color balance! (where the eye is very sensitive, and where refractors are their sharpest) The result is a filter that removes the majority of color fringe, without notably affecting image brightness, imparting strong coloration, or reducing contrast at important wavelengths. As any telescope owner knows, light is a valuable commodity for both planetary and deep sky viewing, and the fringe killer preserves every bit of light possible. Terrestrial observers will also find the qualities of this filter to be ideal for their needs.

Baader Contrast-Booster A unique filter for many different astronomical tasks - incomparable in acuity to combinations of generic color filters, made of raw polished glass - where surface inaccuracy adds up in the optical wave front to an unbearable degree! Especially designed to improve the ubiquitous beginners telescopes - to provide a professional replacement for the simple "dark green" Moon- & Solar-Filters made of "raw polished" glass.

Baader Moon & Skyglow Filter brings an entirely unique approach to contrast enhancement and light pollution reduction. Based on earlier research at Carl Zeiss, Baader has developed a new filter that uses Neodymium glass which filters out a few specific wavelengths from streetlights as well as skyglow from the Moon. The unique spectral characteristics of Neodymium also boost color contrasts by isolating the Red, Green, and Blue regions (so-called RGB enhancement). The result is a filter that leaves natural colors intact, but enhanced.
Lunar and Planetary views are improved in all scopes, reflectors, refractors (APO or Achro). Background sky is darkened, and subtle details improved. The filter's high efficiency preserves image brightness, and many Galaxies, Nebulae and Globular Star Clusters are improved due to the reduction of skyglow from artificial lighting.

Baader UV-IR-Cut Filter The only infrared blocker in this price range featuring a planoptically polished substrate, parallel to within 30 seconds of arc!

In combination with the unique properties of the Baader-Contrast-Booster™ the resulting spectral window eliminates all known effects of image deterioration - an absolute MUST for digital imaging.

Baader UHC-S Nebula Filter The UHC-S delivers a darker sky and improved contrast over typical broadband 'Deep Sky Filters', but without sacrificing all the stars like other 'UHC' filters. The moderate 60nm passband and extreme efficiency makes this filter great for smaller scopes as well as the giants. Ideal for imaging, too (with >99% transmission of H-Alpha).

Baader O-III Nebula Filter Delivers the absolute highest contrast views of many diffuse and planetary nebula. For many objects, the Baader O-III reveals a level of intricate detail that rivals the best deep sky photographs. Our favorite filter for the majority of nebula, especially The Veil, Lagoon (M8), Swan (M17), Ring (M57) and Dumbell (M29). With a large scope, you can even view the famous 'Pillars of Creation' in M16 (Eagle).

Prices

Baader Venus U-Filter The latest coating technologies permit the Baader Venus Filter to transmit from 300nm to 400nm, with a peak transmission of 80%! The filter completely blocks the rest of the region from 200nm to 1500nm, through the use of a complex 20 layer dielectric coating stack, on top of a special UG-11 substrate. Up till now, Amateur efforts typically relied upon deep violet colored filters, or combinations with simpler interference filters, which do not provide the high transmission and efficient rejection outside the important spectral region from 320nm to 390nm. Given the poor transmissions of many optics in the UV and the lower sensitivity of some CCDs to this wavelength, high filter efficiency and complete rejection at longer wavelengths becomes paramount to recording good contrast at reasonable exposures. The same high optical quality and features as the other Baader filters ensures the highest contrast and sharpest images possible.

Baader H-Alpha Filter Baader's new H-Alpha filter enables high-contrast deep sky images of H-II regions (such as the N. American Nebula). Its 45nm FWHM bandwidth is ideal for many of today's CCD cameras (particularly those with interline CCDs). The sharp, narrow bandpass and high efficiency coatings make the Baader H-Alpha filter superior to the common colored-glass based filters, all at a reasonable price. The Baader H-Alpha filter shares the same outstanding features as all the other Baader imaging filters. Unmatched optical quality, and high efficiency hardened multicoatings result in the sharpest and highest contrast images possible.

Baader Solar Continuum Filter (540 nm) Unsurpassed contrast of photospheric details is achieved by an extremely narrow half bandwidth of only 8 nm. Functions like a monochrometer, suppressing the effects of atmospheric turbulence to provide images that appear markedly more stable. Focus "Sweet Spot Generator" – completely eliminates the usual focusing guesswork – the image snaps to a razor sharp focus at the exact focal position. Image the sun the way professionals do!

Note: Use only in combination with AstroSolar Safety Film or Herschel Safety Wedge or other safe prefilters.

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Red No23A 25% VLT - This is a very useful filter. Light red filters help to make Mercury and Venus stand out from the blue sky when viewed during the day. Used in large telescopes, light red sharpens boundaries and increases contrast on Mars, sharpens belt contrast on Jupiter, and brings out detail on Saturn.

Yellow No15 62% VLT - Yellow filters help greatly in viewing Mars by bringing out the polar ice caps, enhancing blue clouds in the atmosphere, increasing contrast, and brightening desert regions. Yellow also enhances red and orange features on Jupiter and Saturn and darkens the blue festoons near Jupiter's equator.

Neutral Density No96 - An excellent filter to reduce the overall brightness of an image to cut down glare. Useful for splitting binary systems, comfortably observing the moon, or stacking with other planetary filters. Retains true color balance since all wavelengths are transmitted uniformly over the entire spectrum. Available as 50%,25% and 13% VLT.

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Polarizing Filter - Use these to increase contrast in some images, especially in daytime photography. Retains true color balance since all wavelengths are transmitted uniformly over the entire spectrum. Use two together for a variable polarising filter combination to vary the amount of light transmission 1% to 40%.

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Aquila Optical & Electronics ABN 22 489 700 636