2 inch Moon Filter: 0.9 Density

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Quick Overview

The ND96 0.9 Astronomica Moon Filter reduces glare; allowing transmission of only a portion of the Moon's reflected light. Not only will you see more surface features; but you can study them in greater comfort.

2 inch Moon Filter: 0.9 Density

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Details

Brand:
Astronomica
Information:

The ND96 0.9 Astronomica Moon Filter reduces glare; allowing transmission of only a portion of the Moon's reflected light. Not only will you see more surface features; but you can study them in greater comfort.

The filter reduces irradiation; which is the distortion at the boundary between light and dark areas; such as along the lunar terminator. The Filter is especially useful to owners of large-aperture scopes; in which the Moon's brightness can be overwhelming. It uniformly reduces light over the entire visible spectrum. Screws into threaded eyepiece barrel. The 0.9 version has been measured to transmit 13% of the incident light.



Specifications:
Specifications for Astronomica Moon 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.
  • Filters may be piggybacked; or stacked; to achieve selective filtration of the visual colour spectrum.

    For visual applications Astronomica Moon filters thread into the barrels of virtually all 2" eyepieces. Each filter is packed in a foam-fitted plastic case for secure long-term storage.

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