Meade 933 45 Degree Erecting Prism
by Meade
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Customers in the UK,
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Digital Photo Product Details
Manufacturer: MeadeModel: 933
Product features:
- 45-degree prism
- For correct viewing orientation
- For terrestrial observing
- Threads to the rear cell
- Accepts any Meade eyepiece
Digital Cameras Photo Reviews of Meade 933 45 Degree Erecting Prism
Customer Review: Purely for terrestrial viewing
Summary: 3 Stars
Only purchase the Meade 933, 45 Degree Erecting Prism if you want to use your ETX for terrestrial viewing. It doesn't really have a uselful astronomical application and tends only to diminish the quality of the object viewed in space. You don't necessarily need this for terrestrial viewing either unless you desire to see the object in its correct orientation, which is what this item is designed for. Does the job nicely in this respect. Recommended for terresrtrial viewing only.
Description of Meade 933 45 Degree Erecting Prism
ETX-60 and 70AT telescopes contain internal mirrors that reflect light to the telescope's astronomical observing position. In this position, the telescope's image is upright, but reversed left-to-right. This is of little consequence for astronomical viewing, but for terrestrial observing it is highly desirable to have a correctly oriented image. The #933 Erecting Prism delivers a fully corrected image and provides a convenient 45 observing angle for optimal terrestrial viewing.The Meade 933 45-degree erecting prism aids terrestrial observing where a correctly oriented image is desirable. It threads onto the telescope's rear cell and accepts an eyepiece of any focal length.
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