Download Choosing and Using a New CAT: Getting the Most from Your by Rod Mollise PDF
By Rod Mollise
Choosing and utilizing the recent CAT will supersede the author’s profitable Choosing and utilizing a Schmidt-Cassegrain Telescope, which has loved enthusiastic help from the beginner astronomy neighborhood for the earlier seven years.
Since the 1st ebook was once 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. automated SCTs, Maksutov-Cassegrains, and such a lot lately Meade’s new and acclaimed Ritchey-Chrétiens have come to dominate the industry. that suggests that each one amateurs contemplating the acquisition of a brand new telescope (not just a SCT, and never simply newbies) will take advantage of this specific advisor. selecting the best telescope for specific varieties of remark (or even for basic paintings) is way from effortless – yet Rod Mollise provides helpful recommendation and guidance.
Read Online or Download Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (The Patrick Moore Practical Astronomy Series) PDF
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Extra info for Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (The Patrick Moore Practical Astronomy Series)
Example text
A telescope is more than just a mount and a tube; a few accessories are needed before any observing can be done. How does the LXD75 stack up there? It is a little Spartan but not overly so compared to other SCTs, including considerably more expensive ones. In the box, in addition to the tube, mount, and Autostar hand control, there’s a 26-mm Plössl eyepiece, an imported ocular that, while not a world beater, is of decent quality. 25-inch format prism star diagonal that, like the eyepiece, is usable if not exactly impressive in its build quality or performance.
Accurate time, date, and location may help the scope come closer to go-to alignment stars during its initial slews, but it will be no more accurate than a scope with date, time, and location entered manually with reasonable care. Amateur-grade mounts are simply not able to take advantage of the precision time and location data offered by GPS. SCT Buyer’s Guide This guide to new SCTs is current as of the writing of this book, but CAT manufacturers tend to change models, prices, and features every year or two.
3-inch 16 tpi for Celestron), do not ask why. ” This item is supplied as standard equipment with all Schmidt Cassegrains bigger than 10-inches. What else does the rear cell do? It provides a place to mount a finder. Even if the SCT has go-to, as most do these days, a finder scope will be needed to help locate two or three go-to alignment stars. An f/10 2000-mm focal length 8-inch SCT has a narrow field of view, even when long focal length (low-magnification) eyepieces are used. This field of view is so narrow that it is surprisingly difficult to get even the Moon centered in an eyepiece without a finder.