By Martin Peston

ISBN-10: 0387364897

ISBN-13: 9780387364896

This e-book deals a entire introductory consultant to "choosing and using" a sequence LXD55 or LXD75 computer-controlled ("goto") telescope, containing a wealth of worthy info for either rookies and extra complicated useful beginner astronomers. The manufacturer’s manuals aren't approximately distinct adequate to be of genuine support to novices. No different ebook bargains complicated thoughts for more matured LXD sequence users.

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Read or Download A User's Guide to the Meade LXD55 and LXD75 Telescopes (The Patrick Moore Practical Astronomy Series) PDF

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Extra info for A User's Guide to the Meade LXD55 and LXD75 Telescopes (The Patrick Moore Practical Astronomy Series)

Sample text

Whenever it was clear or partly cloudy, I would be out there looking at the Moon and Stars or trying to find a bright Planet. The telescope wasn't the best instrument. Its tripod was wobbly and the eyepieces were poorly constructed, but I loved using it nevertheless. Alas, I don't own that telescope anymore, but since then I have owned many astronomical instruments. Some were better than others, but I still had many hours of enjoyment out of them. When my parents bought me that telescope all those years ago, they never considered all the little problems or weaknesses that came with it.

Hence, for large apertures with very long focal lengths a ladder is possibly required to access the focus. An advantage of an SCT is that multiple mirror configuration makes the focal length quite long for a relatively sho rt telescope tub e design. The light has to travel several times up and down the tub e, reflecting off two mirrors, before reaching the focus area at the back of the telescope. Focal ratio s are typically f/l O. Hence, these telescopes are excellent for planet ary work as well as deep sky observing.

For basic Goto operations only a rough leveling is necessary, so you shouldn't waste too much time on the task if you are going to be moving the telescope in between observing sessions. Many tripod stands have an accessory tray, like the LXD55and LXD75tripods where eyepieces and other accessories are placed on ready to be used during an observing session. These trays are normally fixed to all three tripod legs and enhance the overall stability of the stand. 6. LXD75 tripod mount. There is a drawback with tripod designs that have aluminum or wooden struts used as legs.

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A User's Guide to the Meade LXD55 and LXD75 Telescopes (The Patrick Moore Practical Astronomy Series) by Martin Peston

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