Best Refractor Keratometer

Orion Observer 90mm Equatorial Refractor Telescope

  • This wonderfully capable equatorial refractor telescope gives beginning stargazers an exciting look at solar system favorites and beyond.
  • Its 90mm (3.5") lens optics and 900mm focal length excel for stunning views of the lunar surface, Saturn's rings, and bright deep-sky gems like Great Hercules Cluster.
  • The sturdy EQ3-class equatorial mount and aluminum tripod is a big upgrade from the mounts that comparable telescopes on the market come with.
  • Two quality 1.25" Plossl eyepieces are included: a 25mm for low-power views at 36x, and a 10mm for getting in tight at 90x.
  • Highly portable: the optical tube can be removed from the mount quickly via the dovetail mounting system and carried separately..
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SVBONY SV197 Collimating Cheshire Eyepiece 1.25 Inch Collimation Eyepiece for Newtonian Reflector Telescope

  • SV197 cheshire collimating eyepiece fits for Newtonian and SCT reflector telescopes.
  • also useful for aligning refractor optics very accurately.
  • The SV197 cheshire collimating eyepiece for accurate alignment of any Newtonian reflector telescope mirrors.
  • ideal for ensuring the optical alignment.
  • The SV197 cheshire collimating eyepiece can directly see the result of the calibration.
  • Precision machined from aluminium with fine crosshairs and a clear bright mirror with sighting hole.
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Vivitar 500mm f/8 Telephoto Lens For Nikon Digital SLR Camera - Fixed

  • This 500mm Telephoto lens is perfect for wildlife, nature, sports, and landscape photography. who wants to be hidden while taking photos of the....
  • The Vivitar 500mm f/8 Multi Coated Telephoto is a refractor style lens, utilizing lightweight aluminum alloy construction..
  • The aperture settings from f/8 to f/32 retain a full range of exposure and depth of field settings. With an equivalent focal distance of 750mm results....
  • The multi-coated optics provide crisp, high contrast, and flare free images of distant subjects..
  • Includes T-mount adapter for digital and 35mm Nikon SLR cameras.
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Orion Observer 80ST 80mm Equatorial Refractor Telescope Kit

  • Telescope Kit includes extra value-packed accessories for a fun stargazing experience.
  • An ideal refractor telescope package for the observer on-the-go, the compact Observer 80ST packs a lot of performance into a petite telescope design.
  • The included EQ-1B equatorial mount and adjustable-height tripod allows smooth slow-motion movement to easily track objects in the sky.
  • Includes two 1.25" telescope eyepieces, red-dot aiming sight, smooth rack and pinion focuser, 90-degree mirror diagonal for comfortable viewing, and more!.
  • Value-packed telescope kit also includes a 2x Shorty Barlow, MoonMap 260, Orion Telescope Observer's Guide book, Star Target Planisphere, and RedBeam Mini LED keychain flashlight.
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RAB Lighting WP2SN150 WP2 Glass Lens High Pressure Sodium Wallpack, ED17 Type, Aluminum, 150W NPF Power, 16000 Lumens, 120V, Bronze Color

  • Die cast aluminum housing is powder-coated for durability.
  • High-temperature silicone gasket remains in place during lamp changes.
  • Comes with drilling template for easy wall mounting.
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BARSKA 600 Power 80060 Starwatcher Refractor Telescope

  • Beginner Telescope: The Starwatcher telescope is suitable for astronomy beginners to begin a lifetime journey to the stars and planets..
  • Quality Optics: The telescopes features 60mm aperture, 800mm focal length, and coated optics for enhanced image brightness and clarity..
  • Powerful Magnification: The high power 600 magnification brings you easily close up to the astonishing celestial bodies..
  • Multiple Accessories: The telescope comes with 2 eyepieces, a 3x Barlow lens, Moon filter, and a red-dot finder, providing amazing experiences..
  • Easy Access: The altazimuth mount with slow motion altitude controls make it convenient for steady viewing..
  • Included components: Cameras & Photo Telescopes.
  • Solid 600x power refractor telescope with a red dot finderscope.
  • All glass coated optics for enhanced image brightness.
  • Includes 3 separate Interchangeable eyepieces and a 3x Barlow lens to increase viewing power.
  • Engineered with smooth functioning altazimuth mount with slow motion altitude controls.
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Orion GoScope III 70mm Refractor Travel Telescope

  • Grab-and-go day and night refractor telescope and lightweight aluminum tripod for beginning stargazers and families on the go.
  • Rugged, specially designed backpack holds the 70mm telescope, tripod and all accessories.
  • 400mm focal length telescope (f/5.7) excels at daytime birding use as well as viewing wildlife, scenery and casual nighttime observing of the Moon and bright planets.
  • Includes 5x24 finder scope for easy aiming, two anti-reflection coated 1.25" Kellner telescope eyepieces (20mm and 9mm) for 20-power and 44-power views right out of the box, and the Orion MoonMap 260 to help you learn about the cool lunar features you see.
  • The included compact tripod can be adjusted to hold the telescope as low as 17.75" up to a 43.5" maximum height with the tripod legs fully extended.
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Astromania 2\ 90-Degree Mirror Diagonal with 93% reflectivity Across Visible Spectrum

  • It fits all rear cells of Schmidt-Cassegrain telescopes equipped with a big, 2" focuser and can use with refractor telescopes with SCT adapter which you can find in our store(NOT INCLUDE)..
  • The 2" diagonal features dielectric coatings with 93% reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images..
  • Allows you to take advantage of the wider field of view provided by two inch eyepieces. Dielectric coatings are more durable than regular or enhanced aluminum coatings, so you will enjoy years of excellent performance from this product..
  • Associated with 90°mirror diagonals, which let you view objects that are at a 90°angle from the direction the telescope is pointing..
  • Improved attachment design features a brass clamping ring which does not mar, and provides a more secure connection..
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Educational Insights GeoSafari Telescope & Microscope Set, 2-in-1 Set, STEM Learning, Ages 8+

  • Two-in-one set includes high quality telescope and microscope!.
  • Includes 360 mm telescope with magnifications from 18x–80x, all-glass optics, 50 mm achromatic objective lens, and 2 eyepieces..
  • Easy-to-use refractor design and tabletop tripod make the telescope perfect for on-the-go discovery.
  • Perfect for viewing everything from a microbe to the moon..
  • The microscope features durable die-cast metal construction.
  • and professionally prepared slides and everything users need to make their own specimen slides.
  • Great for STEM learning, providing experience with key scientific tools and encouraging exploration and discovery..
  • A hands-on introduction to astronomy and microbiology!.
  • Microscope light requires 2 AA batteries (not included)..
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SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter

  • Mirror Star Diagonal - 99% Reflectivity；Provides a Comfortable 90 Degree View from your Refractor.
  • New 2" 90 deg 99% Dielectric Mirror Diagonal for Telescope With 1.25" adapter.
  • has a 1/10th wave flat optical glass surface.
  • Both sizes of eyepieces may be used and are protected from dings and scratches that would result from a standard set-screw. This 2" diagonal works....
  • Dielectric diagonal is especially important.
  • A standard aluminized diagonal has about 92% reflectance.
  • And this decreases with time as the aluminum....
  • For the vast majority of the visible spectrum.
  • the reflectance does not vary more than about 0.1% below 100%.
  • And the dielectric surface does not age....
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