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Lens Shades Item
#94011, Lens Shade, 5" Schmidt-Cassegrains
Item #94012, Lens Shade, 8" Schmidt-Cassegrains (except NexStar GPS)
Item #94013, Lens Shade, 9-1/4" Schmidt-Cassegrains
Item #94014, Lens Shade, 11" Schmidt-Cassegrains
Item #94015, Lens Shade, 14" Schmidt-Cassegrains
Item #94019, Hard Lens Shade (NexStar 8 GPS, Celestar 8 DX)
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Item #94019
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A Lens Shade/Dew Cap is a tube, of approximately the same diameter as your
telescope tube, designed to fit on the front end of the telescope to reduce
the amount of dew that builds up on the corrector plate. It also serves as
a Len Shade by preventing stray light from falling on the corrector plate,
which greatly improves contrast.
The 8" Lens Shade, item #94019, is made of rugged plastic, and
has a tapered design (other designs made with different materials
cause vignetting). It snaps
easily onto the front cell of all of Celestron’s 8" Schmidt-Cassegrain
telescopes.
Celestron also offers a complete line of rugged, but soft Foamex
plastic lens shades that can be put away flat after usage. They
use a thicker material and
won’t crack easily as other manufacturer’s products do. The quality
level is a step above all others as all material is sewn (not glued in some
places) for a long life. |