Read e-book online Choosing and Using a New CAT: Getting the Most from Your PDF

By Rod Mollise

ISBN-10: 0387097716

ISBN-13: 9780387097718

ISBN-10: 0387097724

ISBN-13: 9780387097725

Catadioptric telescopes (CATs), corresponding to the Schmidt Cassegrains, are more and more well liked by today’s beginner astronomers and are in a position to exhibiting even the beginner observer hundreds of thousands of lovely deep house wonders. glossy CATs, even though, became more and more reliant on pcs. this enables them to instantly element to and tune celestial items, making astronomy extra available to extra humans than ever before.

Unfortunately, due to the high-tech nature of those telescopes, deciding upon one and studying the way to use it's always a tricky event for stargazers either previous and new. That’s the place identifying and utilizing the hot CAT is available in. This e-book courses even the main greenhorn astronomer prior the pitfalls encountered at the route to having fun with the beauties and mysteries of the universe.

Here you are going to study not only which telescope is true for you yet find out how to organize, function, and retain the main advanced and electronics-laden CAT. there are many counsel for holding the hot CAT chuffed and dealing accurately, and there's even suggestions on complex purposes, corresponding to hooking pcs to CATs and utilizing those telescopes to take lovely photos of planets and deep area gadgets.

This booklet supplies readers the good thing about the author’s thirty-five years event utilizing and having fun with catadioptric telescopes and fixing the issues that unavoidably crop up. if you happen to dream of possessing a telescope or are pissed off through the telescope you already personal, this is often the publication for you!

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Extra info for Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope

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This port, which uses an RJ-45 connector, is instead used for two very different purposes. One use is for upgrading the telescope’s motor control firmware. Celestron go-to scopes use two separate computers, one in the HC and one in the mount (the motor control board). The PC port is also used when operating the telescope via the NexRemote software program rather than a hand control (see Chapter 10). Finally, both Meade and Celestron fork-mount telescopes feature “auxiliary” ports. These are used for a variety of functions, most often for operating accessories such as motorized focusers.

Since, as we all know, “there ain’t no such thing as a free lunch” (TANSTAAFL), there must be a penalty of some kind. There is: GEMs are harder for beginners to learn to use than forks. Since the GEM cannot be set up in alt-az mode, the novice must learn to at least roughly polar align if the mount is to track the stars accurately. A halfway decent polar alignment is also needed for good go-to performance on some models. Go-to alignment is also a bit more complicated with GEMs, with many models requiring the user to sight as many as six or seven stars for optimum accuracy rather than the fork’s two or three.

White is an unusual color for CAT tubes these days, but it may be a plus. A white finish may aid in the thermal cooldown that is necessary when an SCT is taken from a warm house and into the cold night air. 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.

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Choosing and Using a New CAT: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope by Rod Mollise


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