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Product Info
Orion - Basic Color Filter Set - 1.25"
This product was added to our catalog on Thursday 29 May, 2008.
Item #:
709
Price:
59,00
EUR
Product Description
Orion - Basic Color Filter Set - 1.25"
Each Orion Basic Color Filter Set includes a #15 Deep Yellow, #25 Red,
#58 Green, and an #80A Blue filter.
Each filter is double-threaded so that filters can be stacked. r Set -
1.25"
Planetary and lunar observation is almost always improved by the use
of color filters. They bring out subtle details by selectively increasing
the contrast among markings of different hues, and by
reducing “irradiation,” the smudging of the boundaries between light
and dark regions due primarily to turbulence in the Earth’s atmosphere.
With the right color filter, suddenly the indistinct, pale bands of Jupiter
resolve into loops and festoons. Delicate markings appear on Saturn’s
globe, and the Cassini and crepe divisions darken and solidify. Mars’
polar caps stand out like tiny pearls, and vague lunar rilles acquire
greater depth and contrast. Bad “seeing” becomes acceptable; good
seeing becomes superb!
Because many planets have a characteristic color (e.g., Mars is
reddish), a color filter will reduce the predominant hues to enhance
contrast and uncover hidden surface markings. That’s why “the Red
Planet” is most effectively enhanced with a green filter!
Orion color planetary filters are the absolute best available. Made from
high-grade Hoya optical glass, each is vat-dyed for even color
distribution and then fully antireflection coated. The glass is held in an
anodized aluminum cell labeled with the appropriate Wratten filter
number. The cell is double-threaded to permit threading of the filter
into the barrel of an eyepiece as well as the stacking of filters for
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