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Orion 70MM AZ manual

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Table of contents for the manual

  • Page 1

    INSTRUCTION MANUAL IN 210 Rev . B 02/09 Providing Exceptional Consumer Optical Products Since 1975 Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 89 Hangar W ay , W atsonville, CA 95076 Orion ® Obser ver ™ 70mm AZ #9881 Altazimuth Refractor T elescope[...]

  • Page 2

    2[...]

  • Page 3

    3 T able of Contents 1. Unpacking ........................ 3 2. P ar ts List ......................... 3 3. The Basic Components of Y our T elescope .................... 5 4. Assembly ....................... 10 5. Getting Star ted ................... 10 6. Using Y our T elescope .............. 12 7. Care and Maintenance ............. 15 8. Specific[...]

  • Page 4

    4 Figure 1. Obser ver 70 Components. 5 1 4 3 2 6 7 Obser ver 70 Refractor[...]

  • Page 5

    1 Optical tube This is the main optical component of the telescope. The glass lens at the front of the tube gathers incoming light and focuses it by bending (or refracting) the light ra ys. The tube assembly has se veral par ts built into it, which are shown and discussed in detail in the ne xt section. 2 90° Mirror star diagonal The diagonal cont[...]

  • Page 6

    Figure 2a. Optical tube components. Figure 2b. Obser ver 70 focuser detail. 6 8 9 10 11 12 14 15 16 1 3 13 18 Obser ver 70 T elescope T ube 2 15 14 16 17 2 17[...]

  • Page 7

    7 8 Objective lens This is the main optical component of the telescope. It is an achromatic, fully coated 70mm diameter lens . 9 Glare/Dew shield This is a simple hood for the objective lens (8) that pre - vents dew formation and stra y light from hitting the lens. 10 Altitude castings These castings are built into the optical tube (1). The yok e k[...]

  • Page 8

    Figure 3b. Obser ver 70 T ripod leg and mount attachment detail. 8 Figure 3a. T ripod and mount detail. 5 20 21 6 Obser ver 70 T ripod and Mount 18 19 21 7 22 23 6 20 21 21[...]

  • Page 9

    9 19 Altitude lock knob This locks the telescope in the altitude (up/down) direction. K eep this knob tightened unless you are moving the telescope a significant distance in the altitude direction. F or smaller altitude adjustments, use the altitude micro- motion control rod and thumbwheel (13). 20 Azimuth lock knob This locks the telescope in the [...]

  • Page 10

    4. Assembly Assembling the telescope for the first time should take about 30 minutes. The only tools you will need are a Phillips head screwdriv er and a flat head screwdriver . As a general note, tighten all screws securely to eliminate fle xing and wobbling, but be careful not to over-tighten and thereby strip the threads. Ref er to Figures 1 thr[...]

  • Page 11

    T o mov e the telescope in the azimuth direction, loosen the azimuth loc k knob , take hold of the telescope and gently rotate it to the desired position. Then re-tighten the azimuth lock knob . T o mov e the telescope in the altitude direction, loosen the altitude loc k knob , take hold of the end of the optical tube and mov e the tube up or down [...]

  • Page 12

    Aligning the EZ Finder II When the EZ Finder II is properly aligned with the telescope, an object that is centered on the EZ Finder II’ s red dot should also appear in the center of the field of view of the telescope’s ey epiece. Alignment of the EZ Finder II is easiest dur ing day- light, bef ore obser ving at night. Aim the telescope at a dis[...]

  • Page 13

    tend to scatter light, which reduces an object’s brightness. T rans parency is judged by the magnitude of the faintest stars you can see with the unaided eye (6th magnitude or fainter is desirab le). If you cannot see stars of magnitude 3.5 or dimmer then con- ditions are poor . Magnitude is a measure of how bright a star is—the br ighter a sta[...]

  • Page 14

    14 T o calculate the magnification, or power , of a telescope-ey e - piece combination, simply divide the f ocal length of the tele - scope by the f ocal length of the ey epiece: T elescope Focal Length (mm) = Magnification Eyepiece Focal Length (mm) F or example, the Obser ver 70, which has a focal length of 700mm, used in combination with the 25m[...]

  • Page 15

    15 C. The Planets The planets don’t stay put like the stars, so to find them you should refer to Sky Calendar at our website (telescope.com), or to char ts pub lished monthly in Astronomy , Sky & T ele scope, or other astronomy magazines. V enus, Mars, Jupiter , and Saturn are the brightest objects in the sky after the Sun and the Moon. Y our[...]

  • Page 16

    16 One-Y ear Limited W arranty This Orion Observer 70 Altazimuth is warr anted against def ects in materials or w or kmanship f or a period of one year from the date of purchase. This w arranty is for the benefit of the original retail purchaser only . During this warr anty per iod Or ion T elescopes & Binoculars will repair or replace , at Ori[...]