11/4" Polarizing Filter Set: – #93608

Ambient daylight is normally comprised of multiple wavelengths of light, vibrating in multiple planes. The Eyepiece Polarizing Filter Set transmits only light moving along a specific plane, thereby increasing the contrast between surfaces with different planar transmissions. Generally, the polarization effect makes blue skies a deeper blue, eliminates surface reflections and helps reduce atmospheric haze.

The Polarizing Filter Set is intended for visual use. It’s particularly useful for reducing glare while observing the moon, double stars, the planets and terrestrial subjects – all without affecting the color of the object being observed.

The Filter Set is comprised of two filters that thread into either the eyepiece or the filter adapter, which comes with the set. When one filter is used alone, you get 30% light transmission. When both filters are used together, you can vary the degree of transmission. By causing the amount of transmitted light to vary, the filters become, in effect, a continuously variable neutral density filter. At

maximum density, the Polarizing Filter Set transmits only 5% of entering light.

Skylight Filter/Dust Seal – #93621

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, C8, C91/4, C11 or C14 telescope to serve as an effective dust seal. By leaving the Skylight Filter/Dust Seal on when removing or attaching other visual accessories, you prevent dust and other atmospher- ic contaminants from entering the rear of your telescope. Needless to say, it’s much easier to clean a dusty filter than a dusty primary mirror, secondary mirror and corrector plate.

The Skylight Filter/Dust Seal must be threaded onto the rear cell of the instrument before any other accessory is installed. The female end attaches to the rear cell of the C5, C8 and C91/4 telescopes and the reducer plate of the C11 and C14 telescopes. All additional accessories mount onto the exterior/male threads.

Moon Filters

Celestron’s Moon Filters are economical eyepiece filters for reducing the brightness of the moon and improving contrast, so greater detail can be observed on the lunar surface. The clear aperture is 21mm for the 11/4" filter and 10mm for the .96" filter. Transmission is about 18%.

11/4" Moon Filter [94119-A]

.96" Moon Filter (for Economy and SMA Series eyepieces) [94119-B]

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Canon 93517, 93518, 93515 manual 11/4 Polarizing Filter Set #93608, Skylight Filter/Dust Seal #93621
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93517, 93515, 93518 specifications

The Canon 93518, 93515, and 93517 are part of Canon's versatile series of ink cartridges designed to complement various printers in their lineup. These cartridges exhibit high efficiency and quality output, catering to both home and office users who demand reliability and superior print results.

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Overall, the Canon 93518, 93515, and 93517 cartridges combine performance, convenience, and sustainability, making them an excellent choice for anyone looking to achieve high-quality prints while maintaining efficiency and supporting environmental efforts. With these cartridges, users can confidently rely on Canon's reputation for excellence in printing technology.
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