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ETX
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Daniel Johnson on November 12, 2003 04:55:35 UTC |
It depends. The non-computerized version of the ETX-90 (which CANNOT be computerized later) is often available for $200 to $300 dollars. The computerized version costs much more. Either one is portable, and of reasonable optical quality, and can be used for daytime viewing as well (such as bird watching). The ETX 90's drawback is it small aperture (the size of a telescope's main lens or mirror, which determines how much light it collects, and hence how bright objects will appear. Aperture also determines the maximum useful magnification to some extent).
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