Meade 1.25" Color / Planetary Filter - #82A Light Blue # 07521 (Japan)

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Out of Stock
Availability: Item has been discontinued by the manufacturer
Our Product ID: ZZOFIL-ZZME-07521
Manufacturer SKU: 07521
Item Can Ship: Worldwide
Meade 1.25" Color / Planetary Filter - #82A Light Blue  # 07521 (Japan)

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Quick Overview

Meade Series 4000 Telescope Color Filters:

  • Large 26mm in clear aperture
  • Manufactured from the purest crown optical glass
  • Dyed-in-the-mass (not "color coated")
  • Each filter glass is anti-reflection coated on both sides and is mounted in a machined aluminum cell with the Wratten No. of the filter marked on the side of the cell.
  • Filters may be piggybacked, or stacked, to achieve selective filtration of the visual color spectrum.

Product Details

Color filters can be very useful for enhancing your views of the Moon and the planets. Depending on the atmospheric conditions, the telescope being used, the observer's experience, and the planet being observed or photographed, the advantages of color filters can be anywhere from subtle to dramatic. The right filter can make all the difference between seeing several small craters in the floor of Clavius on the Moon or not; seeing five or six swirls in Jupiter's belts or not; or seeing the inner Crepe Ring of Saturn or not.

Meade #82A Light Blue Color Filter # 07521. For improving contrast and visibility on planetary features. 73% transmission. Moon: Very useful as a contrast-enhancing lunar filter under dark sky conditions with scopes 5" and smaller. Also very useful with scopes 6" and larger when combined with a polarizing or neutral density filter. Mercury: May improve observations of rarely visible dusky surface features at twilight, when the planet is near the horizon. Venus: Increases contrast of occasional faint dark shadings in upper Venusian clouds. Mars – Useful for enhancing the visibility of surface features and localized dust storms, clouds, and ice fogs with 5" and smaller scopes, particularly during the still-unexplained phenomenon of violet clearing (when the Martian atmosphere - normally a bright, featureless disc in violet light due to the scattering of short wavelengths of light by the thin atmosphere - becomes transparent through a violet or blue filter, revealing large dark surface features). Jupiter: Primarily used for enhancing the boundaries between the reddish belts and adjacent bright zones in the upper atmosphere with 5" and smaller scopes. Helpful in defining the Great Red Spot (which is more like a Faint Pink Spot at the present). Saturn: Brings out some low-contrast details in the belts, zones, and polar regions of the planetary disc with smaller scopes. Comets: Brings out the best highlights in comet gas tails in scopes 5" and smaller.

For all 1.25" eyepieces that can accept standard 1.25" astronomy filters. Premium quality glass filter with aluminum cell. Made in Japan. New old stock so boxes may show some light wear from storage.

Product carries full one year factory limited warranty (within US/Canada only).

Useful Resources

Agena Informational Article: Choosing a Color / Planetary Filter