By Rod Mollise
Choosing and utilizing the hot CAT will supersede the author’s profitable Choosing and utilizing a Schmidt-Cassegrain Telescope, which has loved enthusiastic aid from the beginner astronomy group for the previous seven years.
Since the 1st booklet used to be released, much has replaced within the expertise of novice astronomy. The sophistication and diversity of the telescopes on hand 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 every one amateurs contemplating the acquisition of a brand new telescope (not just a SCT, and never simply newbies) will make the most of this certain consultant. selecting the best telescope for specific sorts of commentary (or even for normal paintings) is much from effortless – yet Rod Mollise provides priceless suggestion and guidance.
Read 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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Additional 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)
In Gregory design MCTs, the secondary is a silvered (aluminized) spot on the inside surface of the corrector plate. Inside a CAT 39 Plate 12. (MCT Corrector) The deep-dish corrector plate of a Gregory-style Maksutov Cassegrain telescope, the Meade ETX125PE. Credit: Author. Why would somebody want an MCT instead of an SCT? because—some amateurs think—MCTs have better optics. Although SCTs are good, the MCT does usually pull ahead of the SCT in image sharpness. This is due in part to the nature of the corrector.
Why are no companies other than Meade and Celestron making SCTs today? Maybe this is because the other makers who have entered the SCT arena have been, like Takahashi and Lichtenknecker, focused on making the best SCTs it is humanly possible to make. That does not come cheaply in any scope design. The Lichtenknecker 8-inch, for example, cost nearly 5,000 German marks in the mid-1980s. The big problem, though? It is hard to best Meade and Celestron when it comes to SCTs, whether you want to produce an expensive scope or just something similar to what comes out of California.
RS-232 serial data are used for a variety of functions on a forkmount SCT, including sending the telescope on go-tos using an astronomy program running on a laptop personal computer (PC), autoguiding the telescope serially if a dedicated autoguide port is not available, and updating telescope firmware. ” You’d think that would be the place to connect a laptop computer to control the scope via “planetarium” software. Makes sense, right? But, the Celestron engineers had other ideas apparently. This port, which uses an RJ-45 connector, is instead used for two very different purposes.