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Image of 1.25" Orion Sulfur-II Extra-Narrowband Filter
 

1.25" Orion Sulfur-II Extra-Narrowband Filter

The S-II filter passes light at the 672.4nm wavelength (the Sulfur-II line in the deep red end of the visual spectrum) with very high 90 percent transmission and a bandpass of 7nm. It complements the Orion H-alpha and Oxygen-III extra-narrowband filters,...



 
Image of 1.25" Orion Telescope Eyepiece Extension Tube
 

1.25" Orion Telescope Eyepiece Extension Tube

These anodized, machined aluminum tubes provide extra focuser back travel sometimes needed to achieve focus with certain eyepiece/telescope combinations. More back travel is often needed for short-range terrestrial viewing or with use of a field flattener,...



 
Image of 1.25" Orion Telescope Eyepiece Parfocal Rings, Set of Four
 

1.25" Orion Telescope Eyepiece Parfocal Rings, Set of Four

Improve stargazing efficiency with a Set of 4 Orion 1.25" Parfocal Rings! You can save precious observing time by using our Set of 4 Orion 1.25" Parfocal Rings with your telescope eyepieces. Our precision machined parfocal rings allow you to make an assortment...



 
Image of 1.25" Orion UltraBlock NarrowBand Filter
 

1.25" Orion UltraBlock NarrowBand Filter

The UltraBlock is a great filter for deep-sky observers located at highly light-polluted sites. Blocks all forms of light pollution - mercury vapor and sodium emission bands - while passing the critical hydrogen-beta and ionized oxygen wavelengths. With...



 
Image of 1.25" Orion Universal Camera Adapter
 

1.25" Orion Universal Camera Adapter

The 1.25" Universal Camera Adapter allows attachment of a camera body to reflector and refractor telescopes for either prime-focus or eyepiece-projection photography (hence the term universal). The adapter slides into the eyepiece holder as an eyepiece...



 
Image of 1.25" Orion Variable Polarizing Filter
 

1.25" Orion Variable Polarizing Filter

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....



 
Image of 1.25" Orion Variable Universal Camera Adapter
 

1.25" Orion Variable Universal Camera Adapter

The 1.25" Variable Universal Camera Adapters allow attachment of a camera body to reflector and refractor telescopes for either prime-focus or telescope eyepiece-projection photography (hence the term universal). The adapter slides into the eyepiece holder...



 
Image of 10.56" ID Orion Full Aperture Solar Filter
 

10.56" ID Orion Full Aperture Solar Filter

Designed to fit snugly over the aperture of your telescope, these optical glass filters block 99.999% of incoming sunlight, allowing you to safely observe sunspots and solar granulation in the Sun's photosphere. The Sun appears in a natural, whitish color....



 
Image of 100mm ID Orion Telescope Tube Rings
 

100mm ID Orion Telescope Tube Rings

These tube rings have an inside diameter (ID) of 100mm (3.9"). Orion Tube Rings for telescope Optical Tube Assemblies come as a set of two with quick-release, hinged clamp knobs for easy installation on your favorite telescope. Each tube ring features...



 
Image of 10mm Orion Sirius Plossl Telescope Eyepiece
 

10mm Orion Sirius Plossl Telescope Eyepiece

With a wide 50-deg apparent field, our Sirius Plossl line of eyepieces provide clear, sharp images of impressively high contrast. They're suitable all telescope types: reflector, refractor, and catadioptric. Each 4-element Sirius Plossl is multi-coated...