Orion OBSERVER 70MM AZ Manual
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Orion OBSERVER 70MM AZ Manual

#9881; altazimuth refractor telescope
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instruction Manual
orion
®
observer
70mm aZ
™
#9881
Altazimuth Refractor Telescope
customer support (800) 676-1343
E-mail: support@telescope.com
corporate offices (831) 763-7000
89 Hangar Way, Watsonville, ca 95076
Providing Exceptional Consumer Optical Products Since 1975
IN 210 Rev. B 02/09

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  • Page 1 Manual orion ® observer 70mm aZ ™ #9881 Altazimuth Refractor Telescope customer support (800) 676-1343 E-mail: support@telescope.com corporate offices (831) 763-7000 89 Hangar Way, Watsonville, ca 95076 Providing Exceptional Consumer Optical Products Since 1975 IN 210 Rev. B 02/09...

  • Page 3: Table Of Contents

    EZ Finder II reflex sight (4) packaging. In the event you need to ship the telescope to EZ Finder II mounting bracket (11) another location, or return it to Orion for warranty repair, hav- Tripod attachment screws (21) with wingnuts and washers...
  • Page 4 observer 70 refractor Figure 1. Observer 70 Components.

  • Page 5: The Basic Components Of

    ® 3. the Basic components of Your telescope Figure 1 shows the fully assembled Observer 70. 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 EZ Finder ii reflex sight 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 Focuser drawtube This is the main optical component of the telescope.
  • Page 8 observer 70 tripod and Mount Figure 3a. Tripod and mount detail. Figure 3b. Observer 70 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 a close-up detail of the tripod legs (6) attached to the altazimuth yoke mount (5). altitude lock knob leg lock knobs This locks the telescope in the altitude (up/down) direction.

  • Page 10: Assembly

    4. assembly Assembling the telescope for the first time should take about 30 minutes. The only tools you will need are a Phillips head screwdriver and a flat head screwdriver. As a general note, tighten all screws securely to eliminate flexing and wobbling, but be careful not to over-tighten and thereby strip the threads.

  • Page 11: Focusing The Telescope

    Do You Wear Eyeglasses? Altitude If you wear eyeglasses, you may be able to keep them on while you observe. In order to do this, your eyepiece must have enough “eye relief” to allow you to see the entire field of view with glasses on. You can try looking through the eyepiece first with your glasses on and then with them off, to see if the glasses restrict the view to only a portion of the full field.

  • Page 12: Using Your Telescope

    aligning the EZ Finder ii When the EZ Finder II is properly aligned with the telescope, Azimuth adjust- an object that is centered on the EZ Finder II’s red dot should ment wheel also appear in the center of the field of view of the telescope’s eyepiece.
  • Page 13 Faint deep sky objects become difficult or impossible to see through the murk of light pollution. Even bright nebulas like the Orion and Lagoon Nebulas lose much of their delicate detail. The Moon and planets are not affected; they require steady air more than dark skies, so they remain good targets for city-dwelling observers.
  • Page 14 To calculate the magnification, or power, of a telescope-eye- Magnification limits piece combination, simply divide the focal length of the tele- scope by the focal length of the eyepiece: Every telescope has a useful magnification limit of about 2X per millimeter of aperture. This comes to 140X for the Telescope Focal Length (mm) = Magnification Observer 70.

  • Page 15: Terrestrial Viewing

    C. The Planets objects except in a few of the brightest ones. But as you become more experienced and your observing skills get The planets don’t stay put like the stars, so to find them you sharper, you will be able to ferret out more and more subtle should refer to Sky Calendar at our website (telescope.com), details and structure.

  • Page 16: Specifications

    Weight: 5.7 lbs. one-Year limited Warranty This Orion Observer 70 Altazimuth 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.

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