Telescope Accessories: Filter

Showing posts with label Filter. Show all posts

Friday, September 9, 2011

Lumicon 2" Multiple Filter Selector with T-Threads

Lumicon 2" Multiple Filter Selector with T-Threads Reviews

Lumicon 2" Multiple Filter Selector with T-Threads Feature

Lumicon 2" Multiple Filter Selector with T-Threads

Lumicon 2" Multiple Filter Selector with T-Threads

Saturday, August 13, 2011

2" Orion Variable Polarizing Eyepiece Filter

2" Orion Variable Polarizing Eyepiece Filter Reviews

2" Orion Variable Polarizing Eyepiece Filter Feature

A dimmer switch for your telescope! Helps to tone down brightness when viewing the Moon and planets to both optimize the view and reduce bright glare
Reduced brightness and glare unmasks detail in your viewing subject and greatly improves contrast
Adjust the amount of light transmission from 1% to 40% by rotating the eyepiece filter housing
The filter has an anodized aluminum cell, which threads into the barrel of any 2" Orion eyepiece
Foam-lined hard plastic filter storage case included

This versatile filter acts like a dimmer switch for your telescope, toning down the brightness of the Moon or planets to a level that is comfortable. The reduction in brightness and glare unmasks detail in your viewing subject and greatly improves contrast. The filter consists of two high-grade glass polarizing filters in a rotating cell that allows you to adjust the amount of light transmission from 1% to 40%. Such control is highly desirable for lunar observing because the Moon's brightness varies with its phase. The filter is great for terrestrial observing too, especially on sunny days. The filter has an anodized aluminum cell, which threads into the barrel of any standard 2" eyepiece. Storage case included.

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Aug 14, 2011 03:53:04

Thursday, August 11, 2011

Galileo Color Filter Wheel

Galileo Color Filter Wheel Reviews

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Galileo Color Filter Wheel Feature

Format: 1.25?
3 Filter Settings: Nebula, Planetary, and Clear
Universal 1.25? slots for Filter Switching
Rotating Bezel
Metal Construction

Filtering out certain bands of light can be very useful when observing astronomical objects. Normally to use filters with your telescope you would have to thread the filters on and off of your eyepieces as you are use them. With the Galileo Color Filter Wheel, you simply switch eyepieces as you normally would. To switch filters, just rotate the dial on the Galileo Color Filter Wheel. There is even a "clear" setting so you can view objects without a filter without removing your Galileo Color Filter Wheel. The C.F.W. has three filter settings: Nebula, Planetary and Clear. The Nebular filter is great for filtering out light pollution such as ground light, while the Planetary filter is great for viewing the moon and planets by increasing contrast. The C.F.W. can also be set to clear so objects can be viewed normally without having to remove the Color Filter Wheel. Additionally the filters are universal 1.25 threaded filters so you can switch them out with other filters for more usability. Why be a pro when you can be a expert with little to no effort, step up to the Galileo Color Filter Wheel today.

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Aug 12, 2011 02:14:05

Wednesday, July 20, 2011

Meade Eyepiece Filter 12 Yellow 1.25

Meade Eyepiece Filter 12 Yellow 1.25 Reviews

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Color filters are an essential tool of the lunar and planetary observer, for filters permit the observation and photography of surface detail that is often virtually invisible without filtration.

Filters solve, or greatly reduce, the effects of two basic observing problems: (a) Irradiation is the fuzzying of a boundary between lighter and darker areas of the Moon or a planetary surface and can be caused either by the effects of highly contrasting light impacting the human eye or by the motion of the Earth's atmosphere, through which the observation is being made. (b) Contrast is the separation of adjacent surface regions according to their color; for example, a light green area on Mars can become mixed in the eye with an adjacent light yellow area, to the effect that the combined area appears yellow-green, unseparated into its component regions.

The use of a Meade Series 4000 color filter can mean the difference between seeing small craterlets in the floor of Clavius on the Moon and not; it can mean the difference between seeing five or six whirls, festoons, and loops in Jupiter's north equatorial belt and seeing one or two; it can mean the difference between seeing the inner crepe ring of Saturn and not. Depending on atmospheric conditions on both the Earth and the planet being observed, the advantages of color filters can be anywhere from subtle to dramatic.Series 4000 filters thread into the barrels of virtually all 1.25" eyepiece brands.

Meade Series 4000 filters are a large 26mm in clear aperture and are manufactured from the purest crown optical glass, dyed-in-the-mass (not "color coated"); there are no finer filters available for telescopic applications. Each filter glass is anti-reflection coated on both sides and is mounted in a machined aluminum cell with the Wratten No. of the filter marked on the side of the cell. Filters may be piggybacked, or stacked, to achieve selective filtration of

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Jul 20, 2011 19:21:04

Monday, July 11, 2011

Thousand Oaks Nebular Filter 1.25" Lp-3 Oxygen III

Thousand Oaks Nebular Filter 1.25" Lp-3 Oxygen III Reviews

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Enhance your deep sky viewing with the latest in multi-layer coating technology. Over three years in development. Our filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance. LP-3 Oxygen III (Green Cell) For diffuse and planetary nebulae.

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Jul 11, 2011 15:30:04

Friday, July 1, 2011

Thousand Oaks Solar Filter Type 2 for Celestron Nexstar 80

Thousand Oaks Solar Filter Type 2 for Celestron Nexstar 80 Reviews

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Type 2 Plus: Made with high quality hand select glass coated with our exclusive Solar II Plus. The most durable glass filter on the market. Transmission is 1/1,000th of 1% (Optical Density 5). Great for both visual and photographic use. Solar image is yellow-orange. Guaranteed fifteen years.

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Jul 02, 2011 06:34:04

Monday, June 13, 2011

SBIG CFW10 10-Position Filter Wheel for the ST-7, 8, 9, 10 & 2000 USB Model Cameras, Filters Not Included.

SBIG CFW10 10-Position Filter Wheel for the ST-7, 8, 9, 10 & 2000 USB Model Cameras, Filters Not Included. Reviews

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The SBIG CFW10 is a ten-position filter wheel designed for the USB version of the ST camera series where a serial port is available for controlling the wheel. The CFW10 accepts control input via the I2C port. When attached to an ST-7/8/9/10/2000 USB camera, the filter wheel receives power and control commands through the I2C accessory port of the camera - no additional power or cable to the computer is required. The portion of the housing between the camera and the telescope is only about 3/4" (20mm) thick for minimum back focus. Two versions of the housing make it possible to use the CFW10 either as a separate unit, or as an integral piece replacing the face plate of the ST series camera. The replacement version contains a high quality optical window with superior AR coatings. By using the filter wheel housing as a replacement face plate for the camera, an additional 1/4" (6mm) in back focus is eliminated. The front aperture of the CFW10 contains standard t-threads. A custom camera lens adapter will be available for commonly available 35mm Nikon, Canon, Olympus and other lenses. For attachment to the telescope, a 1.25" nosepiece or 2" nosepiece may be used, or a t-thread to visual back adapter for more secure fit to Schmidt-Cassegrain scopes. For other scopes, any adapter with male t-threads can be used to secure the filter wheel.

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Jun 14, 2011 08:40:03

Tuesday, May 3, 2011

2" Orion Extra Narrowband Filter Set

2" Orion Extra Narrowband Filter Set Reviews

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2" Orion Extra Narrowband Filter Set Feature

These specialized astrophotography filters pass select wavelengths and essentially block all other wavelengths of light, including light pollution, so you can capture images in less than ideal conditions
Ideal for use with Orion monochrome Parsec and StarShoot astrophotography cameras
H-Alpha filter transmits 90% of light at 656.3nm wavelength
S-II filter highlights deep red Sulfur-II wavelength features of emission nebulae
O-III filter highlights blue/green Oxygen-III wavelength features of emission nebulae

Orion's 2" Extra Narrowband Hydrogen-Alpha, Oxygen-III, and Sulfur-II filters are designed to enhance the contrast of emission nebulae in monochrome astrophotography. They are perfect for using with a monochrome CCD camera like Orion's Parsec 8300M Astronomical Imaging Camera. Imaging with extra-narrowband filters is the latest technique used by amateur astronomers for producing striking, high-contrast color CCD astrophotos of emission nebulae. These specialized 'line' filters transmit only the specific wavelengths of light important in these nebulae, while blocking out all the rest. They blacken the background sky to produce high-contrast images, even in heavily light-polluted or brightly moonlit skies. The filters can be used separately or in combination with a filter wheel for advanced tri-color astrophotography. Capture your favorite nebulae in a revealing new light - no matter how light-polluted your skies. Add Orion's 2" Extra Narrowband CCD Filters to your imaging repertoire! Includes a protective plastic case for each.

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May 04, 2011 00:23:56

Saturday, April 30, 2011

Thousand Oaks Nebular Filter 1.25" Lp-1 Broadband

Thousand Oaks Nebular Filter 1.25" Lp-1 Broadband Reviews

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Enhance your deep sky viewing with the latest in multi-layer coating technology. Over three years in development. Our filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance. LP-1 Broadband (Black Cell) For slight to moderately light-polluted areas.

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Apr 30, 2011 13:01:04

Monday, April 4, 2011

Orion 1.25" Mars Observation Eyepiece Filter Set

Orion 1.25" Mars Observation Eyepiece Filter Set Reviews

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Orion 1.25" Mars Observation Eyepiece Filter Set Feature

Unique set of high-performance observational filters markedly improve views of Mars through your telescope
Fully-coated Mars filter increases contrast to bring out subtle detail, even in smaller telescopes.
Included Blue #82A filter enhances low-contrast detail and Orange #21 filter accentuates dark surface markings.
You'll see the polar ice cap, subtle mare shadings, and cloud activity with this thorough complement of Mars filters for telescope eyepieces
All filters fit threaded 1.25" eyepieces - hard plastic filter case included

The custom-designed Mars Observation filter enhances contrast of virtually all surface features. Dielectric coatings transmit violet/blue (<505nm) and orange/red (>615nm) wavelengths where detail is rich, while blocking overbearing yellow/green (515nm-615nm) wavelengths. Polar icecaps appear more sharply defined, and differences in landscape shading are nicely resolved. Polar hazes and cloud cover become visible. The filter's high transmission makes it effective even in small telescopes. Custom-engineered filter comes with protective plastic case.