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Baader Planetarium Contrast Booster Telescope Filter

Item# AAS008
 
3.5

(3 Ratings)

Customer Q & A
1. Filter Size:
1.25 Inch Contrast Booster Filter

Price:

$77.00

List Price: $77.00
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Details & Dimensions
Guarantee & Returns
  • Delivers a significant enhancement of lunar contrast
  • Eliminates the blue defocused haze in Achromatic refractors
  • Display the full resolution your scope is capable of
  • Exceptional for viewing Jupiter
  • The ideal filter for viewing Mars

Description

Much more than a simple minus-violet filter. Based on the popular Baader Moon&Skyglow filter, the Baader Contrast-Booster takes contrast enhancement and skyglow reduction to the maximum level possible from a filter. Not only does this filter deliver a significant enhancement of planetary and lunar contrasts, but it is designed to also totally eliminate the damaging blue defocused haze present in achromatic refractors. Gone are the annoying blue halo and obscuring haze that surround and smear resolution and contrast. Subtle contrasts and colors are boosted, while displaying the full resolution your scope is capable of.


The Contrast-Booster combines a special proprietary melt of Neodymium glass with a carefully designed 23 layer dielectric long-pass blocker on one face, and a 7-layer ultra-low antireflection coating on the other face. By aggressively filtering out the defocused blue wavelengths, a light yellow tint is imparted to objects (noticeably less than a typical yellow filter). The special coatings enable over 95% transmission across key portions of the visible spectrum. This results in a filter that retains the colors and color contrasts in tough subjects like Jupiter, without excessive image dimming. Cloud bands retain their ruddy red hues, but now become more striking in contrast. The Great Red Spot finally becomes easier. Planets and Lunarscapes are set against a jet black sky. The Contrast-Booster is a must for Solar observing (with Baader Astro Solar).


As many users have found, this is the ideal filter for Mars! The views of Mars with all telescopes (including reflectors and apochromats) benefit from the RGB filtration plus blue blocking.


Combined with the Baader UV-IR-Cut Filter, the Contrast-Booster makes the ideal filter set for digital imaging. Rather than add the cost of additional IR filtration (only needed for digital imaging), the Baader Contrast Booster has been optimized for visual use. Digital imagers can simply add our Baader UV-IR-Cut Filter when needed. The true 1/4 wave fineoptically polished surfaces guarantee the sharpness and contrast of the image. Filters are available in both 1¼ and 2" sizes.


The base substrate is a special custom melt of Neodymium doped glass, designed for specific transmission characteristics, and made only for Baader Planetarium. In addition to it's unique spectral characteristics, the Contrast-Booster offers Baader's hallmark optical and mechanical features that set it apart and result in the best possible image sharpness, contrast, and real-world durability.

 

Properties

  • Eliminates the color error of economy Refractors
  • Clearly puts the real quality of the lens on display
  • Removes the bluish hue (= lack of contrast) during lunar-, planetary-, solar- and terrestrial observation!
  • Strongly emphasizes surface detail on Jupiter and Mars! If you have never seen the GRS (Great Red Spot) on Jupiter - with this filter you will!
  • Over 95% transmission - provides a bright, brilliant image compared to the usual dark green color filters, used to bring out detail on Jupiter. Color recognition will be retained!
  • The ultimate in lunar filters! - Moon (and Sun!) appear much more natural in color (with a slight yellowish tint), compared to the usual low priced dark green Moon-filters, usually offered for beginners telescopes.
  • Completely removes distracting false color and the resulting smeared and washed out image details. You have never ever seen the Moon or the Sun (with AstroSolar Safety Film) so tack sharp in an economy priced telescope!
  • Blocks atmospheric stray light (skyglow). Sky-background turns into pitch black!
  • Fits each and every standard filter thread;
  • Combines with the (planoptically polished) Baader Infrared Cut-Filter. In this combination all blue scatter as well as unfocused near infrared light is completely removed - an absolute Must for digital imaging!
  • Planoptically polished, suitable for being used in front of a binocular viewer, or for afocal image projection during digital imaging (way in front of the focal plane!)
  • No deterioration of resolution with magnifications of 150x and more - as with raw polished (flame polished) glass!
  • Substrate (glass melt): Neodymium doped glass
  • Coating / rear face: 7-layer hard-multicoating, featuring 0,2% reflection
  • Coating / front face: 23-layer dielectric long pass blocker
  • Ionbeam hardened coatings on both faces, absolutely scratch resistant - may be cleaned any time without fear


CHOKING HAZARD - small parts may pose a risk to children under 6 yrs.

Shipping Restrictions:
Only ships in contiguous USA.

Dimensions & Specifications

Size

1.25 Inches

Warranty

2 Year Manufacturers Warranty

Type

UHC Filters

Brand

Baader Planetarium

Telescope Accessories Series

Filters

Options

Filter Size:

Baader Planetarium Contrast Booster Telescope Filter
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The Perfect Accessories

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Baader Planetarium Contrast Booster Telescope Filter
 
3.7

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

67%

of respondents would recommend this to a friend.

Pros

    Cons

      Best Uses

      • Astronomy (3)

      Reviewed by 3 customers

      Sort by

      Displaying reviews 1-3

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      (2 of 2 customers found this review helpful)

       
      5.0

      Contrast booster that works...

      By LukeBB

      from Vermont

      About Me Avid Adventurer

      Verified Buyer

      Pros

      • Easy To Use

      Cons

        Best Uses

        • Astronomy

        Comments about Baader Planetarium Contrast Booster Telescope Filter:

        The contrast booster fromm Baader works perfect , it removes the violet fringes at high power from achromatic refractor and darken the background sky . It gives a subtle yellowish color when looking at planets or the moon but it is really not a problem . It stays on my diagonal at all time.

        (2 of 3 customers found this review helpful)

         
        2.0

        Not Impressed

        By Dave Riem

        from M.V. Ca.

        About Me Avid Adventurer

        Verified Buyer

        Pros

          Cons

            Best Uses

            • Astronomy

            Comments about Baader Planetarium Contrast Booster Telescope Filter:

            Baader claims that this filter completely eliminates fringing from achromatic refractors which it does , but it produces an excessive amount of a red/blue opposing limb on Jupiter which in my opinion distracts from the quality of the view . The[...]filter also eliminates the fringing every bit as well , has better light throughput , retains the natural color of the view much better and produces a very slight , almost unnoticed red/blue opposing limb compared to the Baader Contrast Booster . So the [...]wins hands down .

            (1 of 1 customers found this review helpful)

             
            4.0

            Nice filter for non-ED refractors.

            By Stevo

            from GA

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Quality Lens
            • Strong Construction

            Cons

              Best Uses

              • Astronomy

              Comments about Baader Planetarium Contrast Booster Telescope Filter:

              Noticed a difference when used and gave improved details on the Moon's craters and Saturn's rings. Baader products are great for the price.

              Displaying reviews 1-3

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