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Grovers Toymaster 216 High Street, Northallerton DL78LW

A family business

Filters

The variety of uses for filters in amateur astronomy has considerably increased during the last decade, enabled by both more accurately manufactured optical accessories, and, above all, by the “digital revolution“.

Filters There are 92 products.

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Showing 1 - 30 of 92 items
  • £ 229.00 Delivery In 1-5 Days* Tax included
    New

    SkyTech Tri-Band EOS Clip Filter for DSLR cameras (including astro-modified)Narrowband Bi-Colour imaging is a growing new trend in astrophotography, especially popular in light polluted areas, or for imaging in rural areas in moonlight.

    £ 229.00 Tax included
    1-5 Days UK Delivery*
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  • £ 135.00 Delivery In 1-5 Days* Tax included

    The SkyTech LPRO-MAX filter is designed to improve the visibility of stars and deep-sky objects, by blocking light pollution, while transmitting light from deep-sky objects. It is therefore the best option for imaging in moderate light pollution where a more natural colour balance is desired.

    £ 135.00 Tax included
    1-5 Days UK Delivery*
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  • £ 619.00 Delivery In 1-5 Days* Tax included

    Take beautiful images of deep-sky objects from light-polluted suburban locations with the Rowe-Ackermann Schmidt Astrograph (RASA) using this all-new light pollution suppression filter designed by Celestron and Astrodon, a leading astroimaging filter company.

    £ 619.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 169.00 Delivery In 1-5 Days* Tax included

    This 1.25” Eyepiece & Filter Kit includes fourteen (14) accessories that will add new life to your telescope and your observing! You’ll get five quality Plossl eyepieces, a 2X Barlow Lens, six colored filters to improve observations of the planets, a Moon filter, and a foam-fitted aluminum carry case with extra room to grow.

    £ 169.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 15.95 Delivery In 1-5 Days* Tax included

    Sky-Watcher's Moon Filter is an economical eyepiece filter for reducing the brightness of the moon and improving contrast.

    £ 15.95 Tax included
    1-5 Days UK Delivery*
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  • £ 32.95 Delivery In 1-5 Days* Tax included

    £ 32.95 Tax included
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  • From £ 29.95 Delivery In 1-5 Days* Tax included

    This high performance CCD filter transmits only the Hydogen Beta emission line, and therefore is useful for greatly increasing the contrast of objects that glow in the corresponding region of the spectrum, for example the Horsehead, Cocoon and California nebulae.

    From £ 29.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 44.95 Delivery In 1-5 Days* Tax included

    The O-III narrowband filter is specially designed for the observation of gas and  planetary nebulae.It distinguishes different contrasts of the wavelengths of light that pass through, giving ideal conditions for the observation of faint super nova remnants and planetary remnants.

    From £ 44.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 44.95 Delivery In 1-5 Days* Tax included

    The narrowband UHC filter, like the O-III filter, isolates the two doubly ionized oxygen lines (496 and 501nm) in addition to the hydrogen-beta line (486nm) emitted by planetary and most emission nebulae.

    From £ 44.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 21.95 Delivery In 1-5 Days* Tax included

    These contrast-enhancing anodized aluminium, optical glass filters are designed to block out the wavelengths of light emitted by mercury-vapour light and other common causes of light pollution, whilst providing higher transmission at critical hydrogen-alpha and hydrogen-beta lines than competing filters.

    From £ 21.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • From £ 24.95 Delivery In 1-5 Days* Tax included

    These high quality anodized aluminium, optical glass variable polarising filters reduce the amount of light entering your eyepiece.

    From £ 24.95 Tax included
    1-5 Days UK Delivery*
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  • £ 64.95 Delivery In 1-5 Days* Tax included

    This handy, time-saving device is a must-have for astronomers, for both visual and photographic use.

    £ 64.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 129.00 Delivery In 1-5 Days* Tax included

    £ 129.00 Tax included
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    Delivery In 1-5 Days*
  • £ 54.95 Delivery In 1-5 Days* Tax included

    This long-pass filter limits transmission of light with wavelengths longer than 650nm.

    £ 54.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 44.95 Delivery In 1-5 Days* Tax included

    This filter blocks night glow and airglow, sodium and mercury emissions (but not UV or IV).

    £ 44.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 44.95 Delivery In 1-5 Days* Tax included

    This filter blocks low and high pressure mercury and sodium vapour lamplight and neon light whilst letting the rest of the visible spectrum through. Excellent for viewing all deep sky objects under the urban sky. Suitable for visual observations and for CCD photography.

    £ 44.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 39.95 Delivery In 1-5 Days* Tax included

    £ 39.95 Tax included
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  • £ 19.95 Delivery In 1-5 Days* Tax included

    £ 19.95 Tax included
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    Delivery In 1-5 Days*
  • £ 19.95 Delivery In 1-5 Days* Tax included

    £ 19.95 Tax included
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  • £ 64.95 Delivery In 1-5 Days* Tax included

    With the help of this special CE certified film with a filter factor of 100,000 you can observe the sun directly with your binoculars or telescope

    £ 64.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • From £ 41.95 Delivery In 1-5 Days* Tax included

    Your filter can be attached inside or outside the optic with bolts supplied. So there is a min-max range that a single filter will fit. Select your size on the right & refer to the options files below. Call for price for the 150mm filter See below attachment for the instructions for the range of baader solar filters for telescope binoculars & spotting scopes

    From £ 41.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 54.95 Delivery In 1-5 Days* Tax included

    Filters can be attached inside or outside the optic with bolts supplied. So there is a min-max range that a single filter will fit. Select your size on right & refer to the options files below. See below attachment for a review & the instructions for the range of Baader solar filters for telescope binoculars & spotting scopes

    From £ 54.95 Tax included
    1-5 Days UK Delivery*
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  • From £ 26.95 Delivery In 1-5 Days* Tax included

    ONE FILTER IS DESIGNED TO COVER ONE LENS ON A PAIR OF BINOCULARS. Your filter can be attached inside or outside the optic with bolts supplied. So there is a min-max range that a single filter will fit. Select your size on right & refer to the options files below See below attachment for the instructions for the range of baader solar filters for...

    From £ 26.95 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • From £ 280.00 Delivery In 1-5 Days* Tax included

    Never use any eyepiece filter for solar observation without a Solar objective front filter. 

    From £ 280.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 89.95 Delivery In 1-5 Days* Tax included

    Ideal for beginners

    £ 89.95 Tax included
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  • £ 468.00 Delivered In 2-3 Weeks Tax included

    £ 468.00 Tax included
    Ask For Delivery Time
    Delivered In 2-3 Weeks
  • £ 498.00 Delivered In 2-3 Weeks Tax included

    £ 498.00 Tax included
    Ask For Delivery Time
    Delivered In 2-3 Weeks
  • £ 348.00 Delivered In 2-3 Weeks Tax included

    2" Mounted

    £ 348.00 Tax included
    Ask For Delivery Time
    Delivered In 2-3 Weeks
  • £ 403.00 Delivered In 2-3 Weeks Tax included

    50.4mm round unmounted

    £ 403.00 Tax included
    Ask For Delivery Time
    Delivered In 2-3 Weeks
  • £ 459.00 Delivered In 2-3 Weeks Tax included

    50x50mm square unmounted

    £ 459.00 Tax included
    Ask For Delivery Time
    Delivered In 2-3 Weeks
Showing 1 - 30 of 92 items