Read e-book online Choosing and Using a Schmidt-Cassegrain Telescope: A Guide PDF

By Rod Mollise

ISBN-10: 1447102274

ISBN-13: 9781447102274

ISBN-10: 1852336315

ISBN-13: 9781852336318

Amateur astronomy is changing into progressively more well known, quite often as a result availability of rather reasonably cheap astronomical telescopes of wonderful caliber - commercially-made Schmidt-Cassegrain and Maksutovs. Rod Mollise's booklet comprises every little thing novice astronomers want to know approximately those telescopes. that includes (but now not solely) the ever present Meade and Celestron levels, he describes what those tools will do, how you can use them, and that are the easiest to settle on. This e-book contains every thing! There are sections on add-ons, gazing recommendations, and tricks and information gleaned from his 25 years event with this kind of telescope: cleansing, collimating, protecting the telescope and mounting; utilizing the telescope in numerous stipulations; desktop regulate; imaging (wet, electronic and CCD). this can be the appropriate booklet for newbie astronomers who're approximately to speculate in a brand new Schmidt-Cassegrain or Maksutov telescope, or in the event you have already got one and need to get the simplest out of it.

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Extra info for Choosing and Using a Schmidt-Cassegrain Telescope: A Guide to Commercial SCTs and Maksutovs

Example text

Celestron has the Celestar 8. Like the LX-10, this telescope is furnished with enhanced coatings on its mirrors and corrector plate, which Celestron calls Starbright Coatings. Also like the Meade, the scope comes without a case. " This really has very little effect on the price of this telescope, though, which is about the same as that of the LX-IO, when the Meade tripod is figured into the LX-10's final cost. Like all other Celestron Schmidt-Cassegrains, the Celestar is available with f/lO optics only.

You can choose how much money to spend on your telescope's electronics. Are you a stay at home type? A backyard observer doing visual observing? Then you can put a simple and inexpensive AC drive on your scope. Want a telescope that automatically points at objects, just like a goto fork-mount? Mount makers offer robotic drive kits for your GEM too. The GEM mount is a viable alternative for the SCT fan, but one that is just now really coming into its own. Both Celestron and Meade now offer big German mounts that are exceptionally stable and full featured.

The pinpoint light sources of stars need the same exposure regardless of f-ratio. Because of this smaller, brighter image, a nebula or galaxy shows up on film a lot faster 50 Choosing and Using a Schmidt-Cassegrain Telescope with the short focallengthllow f-ratio telescope than it does with the long focal lengthllarge focal ratio telescope. Like terrestrial photographers, astrophotographers refer to smaller f ratio telescopes as being faster than large f-ratio ones. 3 telescope is faster than an f/lO one.

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Choosing and Using a Schmidt-Cassegrain Telescope: A Guide to Commercial SCTs and Maksutovs by Rod Mollise

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