10X50mm illuminated right angle correct image finder, blue body with black trim

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This Meade blue and black trim Astro-Tech 10 x 50mm illuminated finderscope is an excellent replacement for the straight-through dark crosshair finder supplied with many Meade catadioptric telescopes, such as the LX10, LX50, LX90, and LX200. It can also replace the smaller finders that often come with other brands and types of scopes.

The image-erecting amici prism built into the Astro-Tech’s right-angle diagonal gives you images that are correctly oriented (upright and right-reading), so that star patterns are seen exactly the way you see them on star charts and with your bare eye. This makes star-hopping from object to object using the Astro-Tech finder easier than with a mirror-image or inverted finderscope view.

The Astro-Tech’s right-angle right-reading/erect image optics also allow you to view near the zenith in comfort with the finder, without having to turn your head upside down, as you do with the standard straight-through inverted-image finder supplied with most scopes.

The finder’s image-erecting diagonal has precise helical focusing and a compression ring eyepiece holder. Both are premium touches rarely found in a finderscope. There is a dust cap for the eyepiece holder.

The finder’s field of view is a full 5° and its 50mm aperture has a limiting magnitude of 11, fainter than the stars on any commercial star chart. This makes it easier for you to locate faint nebulas and galaxies.

Eye relief is a very long 20mm that is ideal for unvignetted eyeglass use. There's a rubber eyecup that rolls down for eyeglass use and rolls up to shield your eye from contrast-reducing ambient light when used without glasses.

The Astro-Tech finder weighs 26 ounces, including eyepiece and illuminator, but without optional finder bracket. The finder is aluminum, finished in Meade blue with an anodized black diagonal and trim. It is internally baffled for higher contrast. The integral dew shield is extra long to retard the formation of dew and shield the objective from ambient light. There is a thread-in dust cover for the dew shield and objective, another premium touch rarely seen in competitive finders.

Please note: The 62mm diameter body of the finder will not fit into the standard 50mm finder dovetail supplied with most Meade scopes. A larger i.d. dual ring quick release dovetail bracket (#ATF50QRB) is available as an option. Also available as an option is the Astro-Tech #AT90GSR guidescope ring set which has the benefit of being able to hold either the finder or a small photoguide scope for astrophotography.

The supplied single crosshair illuminated reticle eyepiece is removable and has a standard 1.25" barrel. This allows you to remove it from the finder and also use it for centering stars in your main optics for polar alignment and go-to system alignment, for collimating your finder precisely with your main optics, for lining up guide stars in a photoguide scope and/or targeting objects for astroimaging, etc. A diopter ring on the eyepiece allows you to focus the crosshairs precisely to match your eyesight.

The illuminator for the eyepiece crosshairs has a combined on/off switch and rotary variable brightness control. The illuminator uses common A76/LR44/SR44 button-type batteries (supplied) which are easily replaced when needed. While the manufacturer supplies batteries at no cost with this product as a convenience, the battery charge or useful life is not guaranteed. The batteries may arrive with their charge depleted or very low. In such a case, you will have to purchase replacement batteries locally, as battery life is not covered by the manufacturer’s warranty.

Weight:
The weight of this product.
26 oz.
Warranty:
2 years
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General Accessories
Finderscopes (1)
Quick release bracket for 50mm Astro-Tech finders
by Astro-Tech
Quantity:  
$59.95 
Tube Rings (1)
90mm finder/photoguide ring system
by Astro-Tech
Not for sale - Product is shown for informational purposes only
$69.95 
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Astro-Tech - 10X50mm illuminated right angle correct image finder, blue body with black trim

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Our Product #: ATF50BL
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This blue and black Astro-Tech correct image right angle illuminated 10x50mm finder is a user-friendly replacement for the often less-convenient straight-through inverted image finder supplied with many Meade telescopes, such as the LX90 and LX200, but is also usable with virtually any brand and type of telescope . . .





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