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INSTRUCTION MANUAL
Orion
®
SkyView
™
Pro 127mm EQ
#9877
Equatorial Maksutov-Cassegrain Telescope
Customer Support (800) 676-1343
E-mail: support@telescope.com
Corporate Offices (831) 763-7000
P.O. Box 1815, Santa Cruz, CA 95061
Providing Exceptional Consumer Optical Products Since 1975
IN 215 Rev. A 11/02
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Summary of Contents for ORION TELESCOPES & BINOCULARS SkyView Pro 127mm EQ 9877
- Page 1 INSTRUCTION MANUAL Orion ® SkyView ™ Pro 127mm EQ #9877 Equatorial Maksutov-Cassegrain Telescope Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 P.O. Box 1815, Santa Cruz, CA 95061 Providing Exceptional Consumer Optical Products Since 1975 IN 215 Rev. A 11/02...
- Page 2 Optical tube Finder scope Finder scope bracket Declination lock lever (opposite side) Right Ascension lock lever (opposite side) Declination slow-motion control knob Eyepiece Safety thumbscrew Star diagonal Mounting plate securing knob Focus knob (not shown) Right ascension slow-motion Counterweight shaft control knob Counterweights Right ascension axis...
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Page 3: Table Of Contents
ongratulations on your purchase of an Orion telescope. Your new SkyView Pro 127mm EQ is designed for, high-resolution viewing, and astrophotography of astronomical objects. With its precision optics and sturdy equatorial mount, you’ll be able to enjoy hundreds of fascinating celestial denizens. These instructions will help you set up, properly use, and care for your telescope. - Page 4 Finder scope bracket Nylon alignment thumbscrews Finder scope Azimuth adjustment knobs Post Tensioner Focus lock ring Figure 2. Orient the equatorial mount so that the post on the tripod head lines up between the azimuth adjustment knobs on the equatorial mount. Figure 3a.
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Page 5: Balancing The Telescope
Figure 4a-d. Proper operation of the equatorial mount requires that the telescope tube be balanced on both the Right ascension and Declination axes. (a) With the R.A. lock lever released, slide the counterweights along the counterweight shaft until it just counterbalances the tube. - Page 6 focused. Make sure to position the object in the center of the telescope’s eyepiece by turning the R.A. and declination slow- motion control knobs (the R.A. and Dec. lock levers must be tightened to use the slow-motion control knobs). Now look in the finder scope. Is the object visible? Ideally it will be somewhere in the field of view.
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Page 7: Setting Up And Using The Equatorial Mount
Dec. slow-motion control knob Dec. lock lever Dec. setting circle Front opening R.A. setting circle R.A. lock lever Polar axis finder R.A. slow-motion (optional) control knob Latitude scale Latitude adjustment L-bolts Figure 6a-b. The SkyView Pro 127mm EQ mount. aperture of 127 millimeters, so the maximum magnification would be about 254x. - Page 8 Eyepiece Alignment Focus Objective focus ring setscrews (3) lock ring lens Azimuth adjustment knobs Figure 8. For polar alignment, position the tripod so that the "N" Figure 9. The optional polar axis finder scope. label at the base of the mount faces north. The azimuth fine adjustment knobs above it are used to make small adjustments to Polar Alignment Using an Optional Polar Axis the mount’s azimuth position.
- Page 9 “Polaris” on the finder’s reticle. You must first loosen the knob underneath the equatorial mount on the center sup- port shaft to use the azimuth adjustment knobs. Once Polaris is properly positioned within the reticle, you are precisely polar aligned. Retighten the knob underneath the equatorial mount.
- Page 10 R.A. slow-motion control knob clockwise. The Dec. slow- Dec. setting circle motion control knob is not needed for tracking. Objects will appear to move faster at higher magnifications, because the Dec. R.A. field of view is narrower. setting circle setting thumbscrew circle Optional Motor Drives for Automatic Tracking...
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Page 11: Astronomical Observing
Figure 12a-d. This illustration show the telescope pointed in the four cardinal directions (a) north, (b) south, (c) east, (d) west. Note that the tripod and mount have been moved; only the telescope tube has been moved on the R.A. and Dec. axes. Confused About Pointing the Telescope? Observing Tips Beginners occasionally experience some confusion about... - Page 12 lution or other conditions that are hindering your viewing (Figure 13). C. Cooling the Telescope All optical instruments need time to reach “thermal equilibri- um” to achieve maximum stability of the lenses and mirrors, which is essential for peak performance. When moved from a warm indoor location outside to cooler air (or vice-versa), a telescope needs time to cool to the outdoor temperature.
- Page 13 can merely be a pretty image someone gave to you. The other Ironically, Venus appears as a thin crescent, not a full disk, is an experience you will never forget! when at its peak brightness. Because it is so close to the Sun, it never wanders too far from the morning or evening horizon.
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Page 14: Astrophotography
Determine in which constellation the object lies. Now, find the constellation in the sky. If you do not recognize the constella- tions on sight, consult a planisphere. The planisphere gives an all-sky view and shows which constellations are visible on a given night at a given time. -
Page 15: Specifications
10. Specifications loosen the securing thumbscrews. The finder scope and bracket can be removed together by loosening the thumb- screw on the tube’s dovetail mount. Cover the front of the opti- Optical design: Maksutov-Cassegrain cal tube with the dust cover and the rear opening of the eye- Aperture: 127mm piece adapter with its cap. - Page 16 One-Year Limited Warranty This Orion SkyView Pro 127mm EQ is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076.
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