Baader Solar Continuum Filter- 10nm (2 inch)

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Baader Solar Continuum Filter- 10nm (2 inch)

SKU: BAA2458391
$239.00

or 4 payments of $59.75 with Afterpay

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  • Baader Planetarium Solar Continuum Filter 10nm (2 inch)Features:

     

    True Optical Quality: Baader glass substrates are of true optical quality. Most other filters are merely made from raw flame-polished, “optically flat”, or sometimes a top quality commercially polished filter glass (fine for camera filters), resulting in wavefront deformations that damage image sharpness and contrast when used with telescopes. Baader Planetarium filters are made from striae-free substrates, and actually fine optically polished flat to within 1/4 wave p-v over the entire surface, plane parallel to within 30 seconds of arc! This important and unique custom step adds cost – but the result is a filter that maintains the full wavefront quality of the telescope without double images or ghosting, even at high magnifications. Critical to maintaining this level of flatness are Baader’s carefully balanced coating designs, which prevent coating surface stresses from warping the substrate. Such high flatness enables Baader filters to be used far in front of the focal plane, ahead of star diagonals and digital cameras. They are particularly well suited for attachment to the nosepiece of the Maxbright Binocular Viewer (other manufacturer’s filters must be used in pairs, attached to the eyepieces).

     

    Filter Durability: Filter durability has always been a hallmark of Baader Planetarium. The multi-layer dielectric coatings are plasma-assisted and Ionbeam-hardened using the latest technology (the coatings are harder than the glass substrate itself!). Baader filters withstand repeated real-world exposure to the elements and physical cleaning. Users need not leave their precious filters dull and dust encrusted to avoid cleaning – Baader filters may be used and cleaned without fear. We have heard sad stories from owners of other simpler soft-coated dielectric filters, who have seen their coatings degrade from normal exposure to moisture, or wiped away from routine cleaning. Some manufacturers even resort to sandwiching their delicate coatings in between two layers of glass (and risking blurred double images as well as eventual degradation from the edges inward). Baader Filters will truly last a lifetime.

     

    Stackability: Unlike other filters, Baader Planetarium filters are truly designed to be stacked and combined. This is possible due to the high optical quality and highly efficient anti-reflection multicoatings. The ability to combine filters opens up many exciting possibilities, permitting unique spectral characteristics unachievable with any single filter.

     

    Special Filter Cell: Baader’s special filter cell design offers unique features that enhance their reliability and usability. Though difficult to produce, the ultra-thin filter cell results in the maximum possible clear aperture, in order to minimize vignetting (1.25″ Filter clear aperture is 27mm, 2″ Filter aperture is 45mm). The special threading has been designed to fit a wide variety of eyepieces and accessories (there is significant variation between the 1.25″ filter threading used by eyepiece and accessory manufacturers). The front ‘crown’ of the filter incorporates milled notches which make handling and threading the filter a more secure operation in the dark.

Baader Planetarium Solar Continuum Filter – 2″

  • 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

    Baader Planetarium Solar Continuum Filter – 2″

    • This Baader Planetarium Solar Continuum Filter comes in a fully-threaded 2″ round cell.
    • Works in conjunction with a primary white light solar filter (or Herschel Wedge Prism) to show more granulation and sunspot detail!
    • The Baader Planetarium Solar Continuum Filter boosts contrast, cuts down on atmospheric disturbances but transmits at 540nm.
    • Good for both visual work as well as imaging, and even makes a good star test filter.
    • The Baader Planetarium Solar Continuum Filter cannot be used alone when looking at the Sun, or eye damage and equipment damage will occur. Must be used in conjunction with primary solar filter.

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