Wratten #82A: Light Blue Colour Filter

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Quick Overview

Useful on the Moon; Mars; Jupiter; and Saturn; this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. A valuable filter to piggyback with other filters.

Wratten #82A: Light Blue Colour Filter

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Details

Brand:
Astronomica
Information:
Astronomica have in stock some superb 1.25" colour eyepiece filters. Colour Filters are an essential tool of the lunar and planetary observer as they allow the observation of surface detail that is often invisible without filtration.

Useful on the Moon; Mars; Jupiter; and Saturn; this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. A valuable filter to piggyback with other filters.



Specifications:
Specifications for Astronmica Colour Telescope Filters:
  • Large 26mm in clear aperture
  • Manufactured from the purest crown optical glass
  • Dyed-in-the-mass (not "colour coated")
  • Each filter 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 colour spectrum.

For visual applications Astronomica Colour filters thread into the barrels of virtually all other 1.25 " eyepieces. Each filter is packed in a foam-fitted plastic case for secure long-term storage.

Our colour filters solve; or greatly reduce the effects of:
(a) Irradiation is the fuzzing of a boundary between lighter and darker areas of the Moon or a planetary surface and can be caused either by the effects of highly contrasting light impacting the human eye or by the motion of the Earth`s atmosphere; through which the observation is being made.
(b) Contrast is the separation of adjacent surface regions according to their colour; for example; a light green area on Mars can become mixed in the eye with an adjacent light yellow area; to the effect that the combined area appears yellow-green; unseparated into its component regions.

The filter is brand new; we are UK based and all this item will be shipped directly to you from our stock.  There are no additional duty or taxes to pay.

What makes us different?
We are experienced practical astronomers; with many years experience who are happy to offer advice and guidance.  We personally have tested each line we sell for quality and suitability.  Images taken by us with our equipment are available on request; where appropriate.  Please feel free to contact us by telephone; post or email.

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