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Related Manuals for ORION TELESCOPES & BINOCULARS Observer 70 EQ 9882
Summary of Contents for ORION TELESCOPES & BINOCULARS Observer 70 EQ 9882
- Page 1 INSTRUCTION MANUAL Orion ® Observer 70 EQ ™ #9882 Equatorial Refractor 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 211 Rev. A 10/02...
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Page 3: Table Of Contents
® elcome to the exciting world of amateur astronomy. Your new Observer 70 EQ Refractor is a quality optical instrument that will deliver countless hours of exciting stargazing, from magnified views of the Moon, star clusters, and nebulas to glimpses of Jupiter’s moons and Saturn’s rings. The Observer 70 includes everything you need to go from box to backyard in less than half an hour. - Page 4 Observer 70 Refractor Figure 1. Observer 70 EQ Components...
- Page 5 ® The Basic Components of Your Telescope Figure 1 shows the fully assembled Observer 70 EQ. All the major components of the telescope are described and numbered to help you identify each part and understand its use. Refer back to this figure when assembling the telescope. Optical tube Counterweight This is the main optical component of the telescope.
- Page 6 Observer 70 Telescope Tube Figure 2a. Optical tube components Figure 2b. Observer 70 focuser detail...
- Page 7 ® Details of the Optical Tube and Components Figure 2a shows the details of the Optical Tube (1) and its various parts. The optical tube is shown attached to the mount for clar- ity. Figure 2b is a close up of the focuser with even more detail. Objective lens Focus wheels This is the main optical component of the telescope.
- Page 8 Observer 70 Tripod and Mount 29 31 Figure 3a. Equatorial mount detail. Figure 3b. Observer 70 EQ tripod leg and mount attachment detail.
- Page 9 Details of the Tripod and Mount Figure 3a shows a close up of the telescope’s mount and tripod. Important features are pointed out for greater clarity and detail. Figure 3b shows close-up detail of the tripod legs (10) attached to the equatorial mount (5). Declination setting circle Latitude scale This circle will indicate where the telescope is pointing...
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Page 10: Assembly
Figure 4a-d. Proper operation of the equatorial mount requires that the telescope tube be balanced on both the R.A. and Dec. axes. (a) With the R.A. lock lever released, slide the counterweights along the counterweight shaft until it just counterbalances the tube. (b) When you let go with both hands, the tube should not drift up or down. -
Page 11: Getting Started
Do You Wear Eyeglasses? If you wear eyeglasses, you may be able to keep Azimuth adjustment them on while you observe. In order to do this, your Thumbscrews wheel eyepiece must have enough “eye relief” to allow you to see the entire field of view with glasses on. You can Power try looking through the eyepiece first with your knob... - Page 12 ring clamps on the tube rings (6) a few turns, until you can Figure 6. EZ Finder II slide the telescope tube forward and back inside the rings superimposes a (this can be aided by using a slight twisting motion on the tiny red dot on the optical tube while you push or pull on it) (Figure 4c).
- Page 13 EQ mount moves in the opposite Little Dipper direction of the Earth's rotation. (in Ursa Minor) N.C.P. Big Dipper (in Ursa Major) Polaris Cassiopeia Figure 9. To find Polaris in the night sky, look north and find the Big Dipper. Extend an imaginary line from the two "Pointer Stars" in the bowl of the Big Dipper.
- Page 14 2. Loosen the latitude lock T-bolt (29). Turn the latitude You should now be able to use the Dec. slow-motion control adjustment T-bolt (30) and tilt the mount until the pointer cable again to fine adjust the telescope’s position. on the latitude scale is set at the latitude of your observing Tracking Celestial Objects site.
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Page 15: Using Your Telescope
Figure 10a-d. These illustrations show the telescope pointed in the four cardinal directions (a) north, (b) south, (c) east, (d) west. Note that the tripod and mount have not been moved; only the telescope tube has been moved on the R.A. and Dec. axes. 2. - Page 16 Light Pollution Most of us live where city lights interfere with our view of the heavens. As our metropolitan areas have become more developed, the scourge of light pollution has spread, washing out many stars and nonstellar celestial objects from our sight. Faint deep sky objects become difficult or impossible to see through the murk of light pollution.
- Page 17 Figure 12. Magnification Limits The 10mm and 25mm Explorer II eyepieces. Every telescope has a useful magnification limit of about 2X per millimeter of aperture. This comes to 140X for the Observer 70. Some telescope manufacturers will use misleading claims of excess magnification, such as “See distant galaxies at 640X!”.
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Page 18: Care And Maintenance
will likely appear star-like. Because planets are quite small in 6. Care and Maintenance apparent size, optional higher-power eyepieces are recom- mended and often needed for detailed observations. Not all If you give your telescope reasonable care, it will last a life- the planets are generally visible at any one time. - Page 20 One-Year Limited Warranty This Orion Observer 70 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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