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Meade 1.25" #1 Color Filter Set - 07530

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SKU: MEA-07530

Meade 1.25" #1 Color Filter Set

Color filters are an essential tool of the lunar and planetary observer, for filters permit the observation and photography of surface detail that is often virtually invisible without filtration.

Meade 1.25" #1 Color Filter Set Includes:

  • #12 Yellow

  • #23A Light-Red

  • #58 Green

  • #80A Blue

  • Each filter comes with a plastic protective case

Filters solve, or greatly reduce, the effects of two basic observing problems: (A) Irradiation is the fuzzying 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 color.

Meade Series 4000 filters are a large 26 mm in clear aperture and are 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 Number 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. The eyepiece-with-filter can be placed in the eyepiece-holder of a Schmidt-Cassegrain telescope or Meade ED Apochromatic Refractor for Tele-Extender eyepiece-projection photography of the Moon and planets. Each Series 4000 filter is packed in a foam-fitted plastic case for secure long-term storage.