Celestron ExploraScope 80 Manual de instrucciones descargar pdf (Pagina 10)

FILTERS

OXYGEN III NARROWBAND FILTERS

The OIII narrowband filter isolates just the two doubly-ionized oxygen lines

(496 and 501nm lines) emitted by planetary and emission nebulae, while

blocking the rest of the overall spectrum of light. The result is extreme con-

trast between the black sky background and the faint photons of OIII light

needed for detailed views of the Veil, Ring, Dumbbell, Crescent & Orion

nebulae.

Each filter has an ultra hard, vacuum-deposited coating carefully designed to block all of the

visual spectrum ranging from 400 to 700 nm. This eliminates the unnatural colored halos

surrounding bright stars common with OIII filters of less sophisticated coating technology.

Model #93623 1.25” Oxygen III Narrowband Filter

Model #93624 2” Oxygen III Narrowband Filter

SKYLIGHT FILTER (for Schmidt-Cassegrains)

If you were to use only one filter, Celestron’s Skylight Filter/Dust Seal would

be your most versatile choice. This general purpose, Wratten #1A filter

improves color saturation and balance, increases visual and photographic

contrast, helps to decrease glare in lunar and planetary observing, and

penetrates atmospheric haze. It’s also an inexpensive way to protect your

investment in quality optics. This filter threads onto the rear cell of your

Celestron C5, C6, C8, C9.25, C11 or C14 telescope to serve as an effective dust seal. By leav-

ing the Skylight Filter/Dust Seal on when removing or attaching other visual accessories, you

prevent dust and other atmospheric contaminants from entering the rear of your telescope.

Model #93621 Skylight Filter for Schmidt-Cassegrain telescopes

UHC/LPR FILTERS

Our Light Pollution Reduction (LPR)

Filters are designed to selectively

reduce the transmission of certain

wavelengths of light, specifically

those produced by artificial light.

This includes mercury vapor, and

both high and low pressure sodi-

um vapor lights and the unwanted

natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).

The Ultra High Contrast (UHC) LPR filter has improved contrast over the typical broadband fil-

ters. Sky background is darker, and contrast of emission nebulae are noticeably improved.

The advanced technology coatings enable the filter to achieve an outstanding transmission

of over 97% across the entire bandpass, with total blockage of prominent light pollution

lines. The perfect filter for viewing nebulae from light polluted skies, or for boosting the con-

trast of nebulae from dark sky sites.

The multi-layer dielectric coatings are plasma assisted and ion beam hardened using the

latest technology for durability and resistance to scratching.

Model #94123 1.25” UHC/LPR Filter

Model #94124 2” UHC/LPR Filter

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