User manual MEADE ETX (90, 105, 125) EC

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Detailed instructions for use are in the User's Guide.

[. . . ] Instruction Manual ETX-90EC Astro Telescope ETX-105EC Astro Telescope ETX-125EC Astro Telescope Meade Instruments Corporation CONTENTS WARNING! Never use a Meade® ETX® Astro Telescope to look at the Sun!Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late. Do not point the telescope or its viewfinder at or near the Sun. [. . . ] This screen provides a brighter and clearer image to focus and is highly recommended. Correct shutter speeds vary widely, depending on lighting conditions and film used. Trial-and-error is the best way to determine proper shutter speed in any given application. Note: The camera used with an ETX model may have an exposure meter that is still active when the standard lens is removed and the body is connected to the telescope with the T-mount. If used for terrestrial photography, the camera meter should be acceptable. If used for astrophotography, the meter probably will not provide good results since camera meters are not made to compensate for a dark sky. Terrestrial photography through an ETX model is sensitive to heat waves rising from the Earth's surface. Long distance photography is best accomplished in the early morning hours before the earth has had time to build up heat. Photography of the Moon and planets through an ETX model can be especially gratifying, but points 1 through 4 should be particularly noted in this case. Lunar or planetary photography requires that the telescope be polar aligned (see POLAR ALIGNMENT PROCEDURE, page 16), and that the telescope's motor drive be in operation (see APPENDIX A, page 26). Note: Long-exposure photography of deep-sky objects is not practical with an ETX model, since this type of photography requires special electronic and optical guiding devices not available for this telescope. Fig. 20: Example of a format 2 photo. - 19 - OPTIONAL ACCESSORIES A wide assortment of professional Meade accessories are available for the for ETX telescopes. Meade accessories greatly extend many important applications to the telescope, from low-power, wide-field terrestrial viewing to high-power lunar and planetary observing. The premium quality of these accessories is well-suited to the quality of the instrument itself. Meade telescopes and accessories, including optional accessories for ETX telescopes, are available at more than 3, 000 dealer locations in the U. S. and Canada and through Meade international distributors worldwide. Once you have identified the accessories you wish to order, contact your local Meade authorized dealer. To find a dealer near you call (949) 451-1450 or visit the Meade website at www. meade. com. #497 AutostarTM Computer Controller: One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller (Fig. 21) turns your ETX model into an automatic celestial object locating system. Just plug Autostar into the telescope's HBX port in place of the standard-equipment Electronic Controller, do a quick telescope alignment, and you are ready to observe any object in the Autostar's 14, 000-object database. Best of all, the Meade Autostar is easy to use. [. . . ] It is 2. 2 million light years away in the constellation Andromeda. 36: The Pleiades is one of the most beautiful open clusters. Organizations: 1. 2. 3. And watch Jack Horkheimer, Star Gazer, on your local PBS station. MEADE LIMITED WARRANTY Every Meade telescope, spotting scope, and telescope accessory is warranted by Meade Instruments Corporation ("Meade") to be free of defects in materials and workmanship for a period of ONE YEAR from the date of original purchase in the U. S. A. Meade will repair or replace a product, or part thereof, found by Meade to be defective, provided the defective part is returned to Meade, freight-prepaid, with proof of purchase. [. . . ]

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