By Rod Mollise
Choosing and utilizing the recent CAT will supersede the author’s winning Choosing and utilizing a Schmidt-Cassegrain Telescope, which has loved enthusiastic aid from the novice astronomy group for the prior seven years.
Since the 1st booklet used to be released, much has replaced within the know-how of beginner astronomy. The sophistication and diversity of the telescopes to be had to amateurs has elevated dramatically. automatic SCTs, Maksutov-Cassegrains, and so much lately Meade’s new and acclaimed Ritchey-Chrétiens have come to dominate the industry. that suggests that every one amateurs contemplating the acquisition of a brand new telescope (not just a SCT, and never simply novices) will make the most of this designated advisor. selecting the right telescope for specific sorts of remark (or even for common paintings) is way from effortless – yet Rod Mollise provides useful suggestion and guidance.
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Additional resources for Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (The Patrick Moore Practical Astronomy Series)
The white tube may radiate heat away from the tube interior more quickly than a dark color. The mount this tube rides on, although not fancy, is workmanlike and workable. Operationally, its German mount is more complicated for beginners to learn to use than a fork. The major difference is that, as discussed in Chapter 3, the GEM must be at least roughly polar aligned if it is to accurately go-to and track sky objects. That involves pointing the right ascension (RA) axis of the mount at the North (or South) Celestial Pole, which lies about half a degree from bright Polaris, the North Star.
25-inch format prism star diagonal that, like the eyepiece, is usable if not exactly impressive in its build quality or performance. Even though this is a go-to scope, a decent finder is needed to help locate go-to alignment stars (or objects the computer misses). Meade’s 7 × 50 is a good one, providing prominent crosshairs, a wide field, and enough aperture to pull stars out of light-polluted suburban skies. Finally, there is a battery pack that holds eight D cells for powering the mount. Unfortunately, the D cells will not power the telescope for long, especially in cold weather.
They are considerably easier to balance than fork-mount scopes, and that helps a lot when pushing the scope along after the battery dies. Is a German mount better than a fork? In some ways, it is. Despite the aforementioned smaller RA gears on some GEMs, most of the German mounts seem to track better than similar-quality forks. In large part, this is because they are easier to balance. Unlike a fork, a telescope on a German mount is easily balanced in RA by moving the counterweight up and down its shaft.
Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (The Patrick Moore Practical Astronomy Series) by Rod Mollise