Product description

Now you can have the virtues of refractor-sharp images without having to break into your piggy bank. Our remarkable AstroView 90 gives big returns for a small investment! This is a powerful refractor featuring a multi-coated 90mm objective lens of 910mm focal length (f/10) housed in an enameled aluminum tube. You won’t have any trouble gathering enough light for bright, crisp views of deep-sky objects, the Moon, and planets. Even better, we’ve upgraded the AstroView 90 package with two Sirius Plossl eyepieces (25mm and 10mm)! The AstroView 90 comes equipped with a 6×30 finder, 90-deg star diagonal, adjustable aluminum tripod with accessory tray, and an EQ-2 equatorial mount with slow motion controls for manual tracking. One-year limited warranty.

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Orion’s AstroView 90 equatorial refractor telescope is a classic Achromatic refractor with excellent optics and an unusually good accessory package. Bigger and more impressive than it looks in pictures, the AstroView 90 is an adult size telescope that stands nearly five feet high and weighs almost 25 pounds. With fully illustrated instructions the telescope is easy to assemble, and the package includes two Sirius Plossl eyepieces, a 6×30 optical finder scope, and Orion’s Starry Night planetarium software for your computer.

Refractors are known for their crisp, high contrast views of the Moon and planets and the AstroView 90 delivers sharp views right out of the box. The low power 25mm Sirius Plossl eyepiece (36X magnification) nicely frames the moon, while the high power 10mm eyepiece (91X magnification) delivers a crisp close up image full of detail. The sharp Achromatic optics of the AstroView 90 EQ also give me delightful views of deep space objects. On a moonless night I like the way the 25mm eyepiece frames the ghostly glow of the Orion Nebula. Zooming in with the 10mm Sirius Plossl eyepiece, I can easily pick out all four stars of the Orion Nebula’s embedded quadruple star the Trapezium. Another night I used an Ultima 2X Barlow with the 10mm plossl eyepiece for a total magnification of 182X while viewing the planet Jupiter. I was rewarded with a clear view of Jupiter’s famous Great Red Spot.

The Equatorial mount included with the AstroView 90 EQ is designed to help track stars and planets at high power. When I set up the telescope, I simply point the polar axis at Polaris, the North Star. This makes it easy to keep celestial objects in the field of view by turning one slow motion knob. Orion also offers the EQ-2M Electronic Telescope Drive which features a battery powered motor for automatic tracking. The EQ-2 equatorial mount is a little wobbly when the legs are fully extended, but that’s normal for any large telescope in this price range.

With excellent optics, classic design, and a very good accessory package, Orion‘s AstroView 90 Equatorial Refractor is an excellent introduction to the world of Astronomy. —Jeff Phillips

Pros:

• Classic refractor design
• Crisp clear views of the Moon and planets
• Two Sirius Plossl eyepieces and 6×30 finder
• Starry Night planetarium software included

Cons:

• Equatorial mount wobbles a bit while focusing

First quarter Moon shot at 36x with Powershot camera	First quarter Moon shot at 90X with Powershot camera.
Crater Ptolemeaus shot at 350X with NexImage camera and Ultima barlow.	Planet Jupter shot at 350X with NexImage camera and Ultima barlow.

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Product description

Some of the most picturesque celestial objects are too large to fit in the field of view of an imaging refractor and camera. What’s more, most objects in deep space are very faint and therefore challenging to image without taking very long exposures, increasing the potential for error. Our new Orion 0.8x Focal Reducer for Refractors addresses these obstacles by increasing your refractor telescope’s field of view while reducing the effective focal length by a factor of 0.8x, thereby providing a shorter, more optically “fast” focal ratio to increase astrophotography efficiency. Using the 0.8x focal reducer not only enables your refractor telescope to acquire a larger field of view, but also makes it capable of capturing bright, vividly detailed astrophotos in considerably less time. The Orion 0.8x Imaging Focal Reducer’s fully multi-coated, 38mm clear aperture optics are housed in a sleek, all-machined, anodized aluminum body. Internal glare-threads provide maximum image contrast and brightness. It’s designed for use with any refractor telescope equipped with a 2″ focuser, and requires 55mm of backfocus. Use with a DSLR and appropriate T-ring combination will not require use of any spacers. For use with a CCD astrophotography camera with less backfocus, we highly recommend using the Orion Variable 12-17mm T-thread Spacer Ring (sold separately) to achieve proper distance. You can further enhance your astrophotos by using 2″ imaging filters with the Orion 0.8x Imaging Focal Reducer since it is conveniently threaded for use with 2″ filters. Unit weighs 6.2 oz.

From the Manufacturer

Reduces an astrophotography refractor’s effective focal length by a factor of 0.8x, providing a shorter, more optically fast focal ratio. Designed for use with any refractor telescope equipped with a 2″ focuser. Enables a refractor to both acquire a larger field of view and to capture bright, detailed astrophotos in considerable less time. Features fully multi-coated, 38mm clear aperture optics housed in a sleek, machined and anodized aluminum body. Requires 55mm of back focus