ORION TELESCOPES & BINOCULARS Observer 70mm EQ 9802 Instruction Manual
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ORION TELESCOPES & BINOCULARS Observer 70mm EQ 9802 Instruction Manual

Equatorial refracting telescope
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INSTRUCTION MANUAL
Orion
®
Observer
70mm EQ
™
#9802
Equatorial Refracting 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 096 Rev. A 0898

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Summary of Contents for ORION TELESCOPES & BINOCULARS Observer 70mm EQ 9802

  • Page 1 INSTRUCTION MANUAL Orion ® Observer 70mm EQ ™ #9802 Equatorial Refracting 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 096 Rev. A 0898...
  • Page 2 Tube rings Tube ring clamps Objective lens Finder scope Finder scope bracket Dew shield Finder scope alignment Tube ring mounting bolt screws (3) Declination setting circle Focuser drawtube Eyepiece Right ascension lock knob (hidden) Star diagonal Counterweight shaft Focus knob Counterweight Declination slow-motion control Counterweight lock knob...

  • Page 3: Table Of Contents

    ongratulations on your purchase of a quality Orion telescope. Your new Observer 70 EQ Refractor is designed for high-resolution viewing of astronomical objects. With its precision optics and equatorial mount, you’ll be able to locate and enjoy hundreds of fascinating celestial denizens, including the plan- ets, Moon, and a variety of deep-sky galaxies, nebulas, and star clusters.

  • Page 4: Assembly

    2. Assembly 8. Remove the tube rings from the telescope tube. Attach the ring to the equatorial head with the two hex-head bolts provided. Then lay the telescope tube in the (open) tube Carefully open all of the boxes in the shipping container. rings, with the rings about midway along the tube’s length, Make sure all the parts listed in Section 1 are present.

  • Page 5: Aligning The Finder Scope

    4. To balance the telescope on the Dec. axis, first tighten the sary adjustments to the finder scope’s alignment screws until R.A. lock knob, with the counterweight shaft still in the the object is centered in both instruments. horizontal position. The finder scope can be focused by rotating the knurled ring 5.

  • Page 6: Using The Telescope-Astronomical Viewing

    4. Next, loosen the azimuth lock knob at the base of the 2. Loosen the R.A. and Dec. lock knobs on the equatorial equatorial mount. Rotate the entire equatorial mount in mount (not the azimuth lock knob or latitude adjustment the horizontal direction until the R.A.
  • Page 7 Aiming the Telescope higher powers, an image will always be dimmer and less sharp (this is a fundamental law of optics). The steadiness of the air (the To view an object in the main telescope, first loosen both the “seeing”) will limit how much magnification an image can tolerate. R.A.
  • Page 8 In conditions of good seeing, star twinkling is minimal and The Planets images appear steady in the eyepiece. Seeing is best over- The planets don’t stay put like the stars (they don’t have fixed head, worst at the horizon. Also, seeing generally gets better R.A.

  • Page 9: Terrestrial Viewing

    Remember that the higher the magnification you use, the dim- type cleaning cloth or wipes, as they often contain undesir- mer the image will appear. So stick with low power when able additives like silicone, which don’t work well on precision observing deep-sky objects because they’re already very faint.
  • Page 10 Little Dipper (in Ursa Minor) N.C.P. Big Dipper (in Ursa Major) Polaris 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. Go about five times the distance between those stars and you’ll reach Polaris, which lies within 1°...
  • Page 11 One-Year Limited Warranty This Orion Observer 70mm EQ Equatorial Refractor 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.
  • Page 12 Orion Telescopes & Binoculars Post Office Box 1815, Santa Cruz, CA 95061 Customer Support Help Line (800) 676-1343 • Day or Evening...

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