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Telescope Filter

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How to Buy a Telescope : Using Color Filters With Telescopes

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Kantek MAG 14C Telescopic Magnifier 14''

The Max-View Telescopic Magnifier will expand monitor to the view of a larger size monitor. Enlarges character size by more than two times. Magnification feature is adjustable to provide variable enlargement to suit visual needs. Magnifies without distortion. Eliminates 99 percent of glare Blocks 99.9 percent of ELF/VLF E-Field Radiation. Eliminates static 100 percent Visor hood provides privacy.


Orion Moon Filter, 13% Transmission, 1.25"

The Moon's disk, even at partial phases, is intensely bright with reflected sunlight. The glare washes out most of the craters, rilles, and other surface details from view. Our Moon Filter reduces the glare, allowing transmission of only 13% of the reflected light. Not only will you see more surface features, but you can study them in greater comfort. The filter reduces irradiation, which is the distortion at the boundary between light and dark areas, such as along the lunar terminator. The Orion Moon Filter is especially useful to owners of large-aperture scopes, in which the Moon's brightness can be overwhelming. It uniformly reduces light over the entire visible spectrum. Screws into threaded eyepiece barrel.


Lenspen LENMPII1 Minipro II Lens Cleaner For Digital Cameras, Camcorders, Scopes and Eyepieces (color may vary)

Keeping your lens spotless is one of the most crucial steps to high-quality photography. After all, just the slightest imperfection -- such as dust, fingerprints or water stains -- can mean the difference between a stunning portrait and an unsalvageable mistake. Unfortunately, lens cleaning systems do not always provide photographers with a reliable, convenient solution. Microfiber cloths can often leave dust and debris behind, compressed air won't clean fingerprints or other stains, and "wet" cleaning kits that rely on cotton swabs and liquids are often somewhat cumbersome (and often leaky). The answer is a product that removes dust, erases smudges, won't leak, won't leave residue, and is 100% safe for all lenses. The answer is the LensPen MiniPro II! Its unique design makes cleaning your compact lens fast, simple and effective. On one end, a retractable soft brush sweeps dust and loose particles away from the glass. On the other end, a special dry cleaning compound is used to gently remove fingerprints and spots. The result is a crystal clear lens surface and better pictures in just seconds. The LensPen MiniPro II is 100% safe for all lenses, and its unique, self-replenishing cleaning compound will never spill or dry out like other lens cleaning systems. It is environmentally friendly and non-toxic, and because it is so tiny, the LensPen MiniPro II stows easily in any bag or slips right in your pocket. Best of all, it's very affordable, and will endure hundreds of cleanings without losing any of its effectiveness. The LensPen MiniPro II is recommended for use with any lens with a diameter of less than 13mm, including lenses found on compact digital cameras, cell phones, webcams and other small devices.


Moon Filter 1 1/4"

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 1¼" filter. Transmission is about 18%.1¼" Moon Filter [94119-A]Eyepiece filters are an invaluable aid in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue. Celestron's filters are made of high quality, solid plane parallel glass with excellent homogeneity. They're anti-reflection coated to prevent glaring and ghosting. All eyepiece filters are threaded to fit Celestron's, and most other manufacturer's, 1¼" eyepieces, and offer a full 26mm clear aperture. Celestron filters are mounted in black anodized aluminum cells with the Kodak Wratten Series Number individually engraved, and come with a plastic case for safe storage. The cells of each filter are double-threaded, so they can be stacked (piggybacked) in various combinations. This allows you to create different color combinations and transmission characteristics, or to have the same color characteristic, but with a lower transmission. When stacking color filters, the effective transmission of the combination you create is equal to the product of the spectral transmission of each of the filters used.The effectiveness of the filters depends on


Celestron Astro Solar Filter for CPC800 8", Nextsar 8" & 8" SCT Telescopes.

Celestron Solar Filters are made with Baader Astro Solar Safety Film. Far superior than any existing glass, Mylar or polymer filters, they lead to brighter, sharper, and higher contrast images.Enter the millennium with the finest solar filters available. Astro Solar Safety Film is clear and homogenous and attains the optical performance of high quality plane-parallel glass filters-it is diffraction limited! Double-sided metal coatings have uniform density and good color balance across the entire field ensuring razor sharp images from edge to edge.The Sun appears in its "real "color -neutral white, not blue or orange ,and the sky adjacent to the solar limb is jet black.You can see detail in sunspots, bright faculae near the limb and the mottled areas known as granules with these filters. The Sun offers constant changes and will keep your observing interesting and fun. Even small aperture telescopes can enjoy features of the Sun.The Astro Solar film is completely safe and durable (won't break like glass if dropped). Its rating is ND-5 which means that the film transmits 1/100,000 of visible light (.001%) while reflecting (blocking) 99.999%of unwanted light. The film absorbs all ultraviolet rays while coating reflects infrared light rendering both absolutely harmless. For added assurance, Baader Astro Solar film has been declared safe for direct solar viewing by the German National Bureau of Standards for eye safety.Celestron has previousl


Telescope Solar Filter by Seymour Solar for Meade ETX 125, 114EQ, and DS-2114 ATS

This size filter will fit any telescope with an optical tube diameter of 143-149mm. It is made with a sturdy aluminum outer cell that houses an optical thin film aperture. The thin film is a .002" thick black polymer. It is safe for direct viewing through the telescope and for photography. It is rated as a neutral density 5. You are buying this directly from the manufacturer and it has a 30 day money back guarantee. Also included are instructions for use and care.


Tele Vue Adapter for Long Schmidt-Cassegrain Telescopes

Long Adapter to use Televue 2" Diagonals (#DPC-2002 and DSC-2001) on Schmidt-Cassegrain TelescopesFor the Short Version 2" Diagonal #DPS-2004 use the #ACS-004 Short Schmidt Cassegraing Adapter


Observing the Sun with Coronado Telescopes (Patrick Moore's Practical Astronomy Series)

The Sun provides amateur astronomers with one of the few opportunities for daytime astronomy.

In order to see the major features of our nearest star, special telescopes that have a very narrow visible bandwidth are essential. The bandwidth has to be as narrow as 1 × 10-10 m (1 Angstrom) and centred on the absorption line of neutral hydrogen. This makes many major features of the Sun’s chromosphere visible to the observer. Such narrow-band "Fabry-Perot etalon filters" are high technology, and until the introduction of the Coronado range of solar telescopes, were too expensive for amateur use. The entry-level Coronado telescope, the PST (Personal Solar Telescope) costs under $500.

Solar prominences (vast columns of plasma, best seen at the edge of the solar disk), filaments, flares, sunspots, plage and active regions are all visible and can be imaged to produce spectacular solar photographs. Philip Pugh has assembled a team of contributors who show just how much solar work can be done with Coronado telescopes, and explain how to get the best from these marvellous instruments.

The Adaptive Effects Of Virtual Interfaces: Vestibulo-Ocular Reflex and Simulator Sickness

This is a AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH report procured by the Pentagon and made available for public release. It has been reproduced in the best form available to the Pentagon. It is not spiral-bound, but rather assembled with Velobinding in a soft, white linen cover. The Storming Media report number is A767053. The abstract provided by the Pentagon follows: Current virtual interfaces imperfectly simulate the motion dynamics of the real world. Conflicting visual and vestibular cues of self-motion are believed to result in vestibulo-ocular reflex (VOR) adaptations and simulator sickness, which raises health and safety issues surrounding virtual environment (VE) exposure. Four experiments were conducted to examine the effects of conflicting visual-vestibular cues through employment of typically occurring virtual interface scenarios. Subjects were exposed for 30 minutes to a head- coupled virtual interface, completing visual search tasks using active, unrestricted head movement rotations.


Orion Multiple 5-Filter Wheel and Color Filter Set

Includes #5520 filter wheel and set of four 1.25" color filters (neutral density Moon filter, #25 red and #80A medium blue color planetary filters and a SkyGlow light pollution filter) for planet study.

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