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Orion 07212 9x50 Right-Angle Correct-Image Finder (Black)

5.0 out of 5 stars 4 customer reviews

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  • A specialty Moon filter especially useful for increasing contrast during waning and waxing crescent phases
  • Allows transmission of 25% of incoming light
  • Reduces bright glare reflected off the Moon and boosts contrast and resolution of lunar surface features
  • Threads directly into Orion 1.25" telescope eyepiece barrels
  • Provides a brighter view than our 13% Moon filter by blocking less light - ideal for use with smaller telescopes

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Technical Details


Product Description

Sometimes looking through a straight finder scope can be a strain, making you crouch down and crane your neck for a clear view. Well, you can call off the chiropractors because this Orion 9x50 Right-Angle Correct-Image Finder Scope lets you view in contortion-free comfort! What's more, it has a built-in Amici prism to provide a correctly oriented view - not upside-down as with standard finders. This achromatic crosshair finder scope sports deluxe features including fully coated glass lenses, internal baffling, and focus adjustment. The Orion 9x50 Right-Angle Correct-Image Finder Scope includes a sturdy aluminum bracket with two perpendicular thumbscrews and an oblique spring-loaded tensioner for easy two-step alignment - a big improvement over older six-setscrew designs. You'll have this finder scope aligned with your telescope in no time. The finder scope bracket features a dovetail foot that fits most Orion telescopes. An optional dovetail base can be purchased for custom installations, or for dual-finder scope desires. The right-angle prism and eyepiece are not removable, but focus can be adjusted by rotating the front lens housing. A locking ring lets you set the focus point however you wish. This Black 9x50 Right-Angle, Correct-Image Finder Scope is a large-aperture model ideal for use with bigger telescopes. With 50mm of aperture and a wide 5 degree field of view, you'll be able to identify bright deep space curiosities for clues of where to aim your telescope for more magnified inspection. The finder scope's significant 9x magnification makes it easy to aim your telescope with precision. Weighs 18.6 oz.

Product Information

Product Dimensions 8 x 3.2 x 6 inches
Item Weight 1.2 pounds
Shipping Weight 1.2 pounds
ASIN B0000XMYBA
Item model number 07212
Customer Reviews
5.0 out of 5 stars 4 customer reviews

5.0 out of 5 stars
Best Sellers Rank #236 in Camera & Photo > Camera & Photo Accessories > Telescope & Microscope Accessories > Telescope Accessories > Filters
Date first available at Amazon.com November 1, 2003

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By Allan Ray Miller on January 11, 2011
This filter is used in telescopes for observing the moon. The moon is so bright under magnification by a telescope that details can be washed out, making it difficult to observe interesting details. In addition, too much light can mess up your night vision, something you want when looking at the night sky through a telescope. Think of this as "sunglasses for the moon". (However don't forget to remove it when looking at other objects or they'll be too dark!)

This is the one that you want for typical small powered telescopes - defined as 5" in aperture or less for the primary, or objective, lens. The more commonly available 13% transmission filters are for the "big boys" - telescopes that have an aperture of over 6". If you use a 13% filter on a small telescope you'll be filtering out too much light and the moon will appear way too dark. There are also variable transmission filters that use two polarizing lenses. But they are way more money and most backyard family telescopes are well served by this filter alone.

One note: this filter is used for eyepieces that are 1.25" in size. This is one of the most common sizes for telescopes but check yours to be sure first. It does not have to be an Orion telescope - any brand will do as long as the eyepieces are 1.25". Also make sure that your eyepieces have threads on the bottom inside of the tube, as this filter screws into the bottom of your eyepieces.
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A finder scope is a low magnification, wide field of view telescope which is used to help point the main telescope at your target in the night sky. This one is an excellent value with bright images and views oriented the same way that most star charts are printed. Although I don't have a scope from the same manufacturer, it was very easy to fit it into the mount on my scope. I couldn't be happier!
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As the instructions say, this works best when the moon is in partial shadow. But the views of the surface are incredible!!
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Works great
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