Orion EQ-2 manual

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A good user manual

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First and foremost, an user manual of Orion EQ-2 should contain:
- informations concerning technical data of Orion EQ-2
- name of the manufacturer and a year of construction of the Orion EQ-2 item
- rules of operation, control and maintenance of the Orion EQ-2 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Orion EQ-2 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Orion EQ-2, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Orion service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Orion EQ-2.

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Table of contents for the manual

  • Page 1

    INSTRUCTION MANUAL IN 168 Rev . A 0719 Providing Exceptional Consumer Optical Products Since 1975 Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 P .O. Box 1815, Santa Cruz, CA 95061 Orion ® EQ-2 Equatorial Mount #9828 Equatorial Mount[...]

  • Page 2

    Dec. setting circle R.A. setting circle Counterweight Counterweight lock knob Counterweight shaft R.A. slow-motion control cable Accessory tray Accessory tray bracket Accessory tray bracket attachment point Leg lock knob 2 Figure 1. EQ-2 Mount C ongratulations on y our purchase of a quality Or ion product . Y our new EQ-2 Equatorial Mount was desig[...]

  • Page 3

    3 T able of Contents 1. Unpacking ............................................................................................................................. 3 2. Assembly .............................................................................................................................. 3 3. Attaching a T elescope .....................[...]

  • Page 4

    D E C L IN A T IO N A X IS Latitude scale Latitude adjustment t-bolt Latitude lock t-bolt Azimuth lock knob Dec. slow-motion control cable Dec. setting circle R.A. setting circle lock thumbscrew R.A. setting circle R.A. slow- motion control cable R IG H T A S C E N S IO N A X IS Figure 2. The equatorial mount. Dec. lock knob R.A. lock knob 4 Retigh[...]

  • Page 5

    5 declination axis. This is because the telescope cannot be repositioned as it can when tube rings are used. Assuming you will be using tube rings, we will first balance the telescope with respect to the R.A. axis, then the Dec. axis: 1. Keeping one hand on the telescope optical tube, loosen the R.A. lock knob. Make sure the Dec. lock knob is locke[...]

  • Page 6

    6 Loosen the Dec. lock knob and rotate the telescope optical tube until it is parallel with the R.A. axis. The pointer on the Dec. setting circle should read 90°. Retighten the Dec. lock lever . Loosen the azimuth lock knob at the base of the equatorial mount and rotate the mount so the telescope tube (and R.A. axis) points roughly at Polaris. If [...]

  • Page 7

    7 That’s 5 hours and 35.4 minutes in right ascension, and -5 degrees and 27 arc-minutes in declination (there are 60 arc- minutes in 1 degree of declination). Before you can use the setting circles to locate objects, the mount must be well polar aligned, and the R.A. setting circle must be calibrated. The Dec. setting circle has been perma- nentl[...]

  • Page 8

    8 T o point the telescope to the east or west, or in other direc- tions, you rotate the telescope on its R.A. and Dec. axes. Depending on the altitude of the object you want to observe, the counterweight shaft will be oriented somewhere between vertical and horizontal. Figure 6 illustrates how the telescope will look pointed at the four cardinal di[...]