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Old 11-10-2006, 05:58 PM
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matt
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
OK.... make it $70 + postage

Really? No-one looking for all these mint condition filters at this price?

more details on the contrast booster:


Properties:
  • Eliminates the color error of economy refractors
  • Clearly puts the real quality of the lens on display
  • Removes the bluish "hue" (which equals lack of contrast) during lunar, planetary, solar (with appropriate solar filter) and terrestrial observation!
  • Strongly emphasizes surface detail on Jupiter and Mars! If you have never seen the GRS (Great Red Spot) on Jupiter - with this filter, you will!
  • Over 95% transmission - provides a bright, brilliant image compared to the usual dark green color filters used to bring out detail on Jupiter. Color recognition will be retained!
  • The ultimate in lunar filters! - Moon (and Sun!) appear much more natural in color (with a slight yellowish tint) compared to the usual low-priced dark green moon filters usually offered with beginner's telescopes.
  • Completely removes distracting false color and the resulting smeared and washed out image details. You have never ever seen the Moon so tack sharp in an economy-priced telescope!
  • Blocks atmospheric "stray light" (skyglow). Sky-background turns into pitch black!
  • Fits each and every standard filter thread
  • Combines with the (planoptically polished) Baader Infrared Cut-Filter. In this combination all blue scatter as well as unfocused near infrared light is completely removed - an absolute Must for digital imaging!
  • Planoptically polished, suitable for being used in front of a binocular viewer, or for afocal image projection during digital imaging (way in front of the focal plane!)
  • No deterioration of resolution with magnifications of 150x and more as with "raw polished" (flame polished) glass!
  • Substrate (glass melt): Neodymium doped glass
  • Coating / rear face: 7-layer hard-multicoating, featuring 0,2% reflection
  • Coating / front face: 23-layer dielectric long pass blocker Ionbeam hardened coatings on both faces.
  • Absolutely scratch resistant - may be cleaned any time without fear.