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Orion 9541 manual

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Table of contents for the manual

  • Page 1

    INSTRUCTION MANUAL IN 375 Rev A 10/09 Customer Support (800 ) 676 -1 343 • E-mail: suppor t@telescope.com Corporate Offices (831) 763-7000 • 89 Hangar W ay , W atsonville, CA 95076 Orion ® T able T op T elescopes #9909 StarMax ™ 90 T ableT op Maksutov-Cassegrain #9541 SkyScanner ™ 100 T ableT op Reflector #9549 GoScope ™ 80 T ableT op Re[...]

  • Page 2

    2 Congratulations on your purchase of a T ab leT op telescope. The T ab leT op will provide years of enjoy - ment of many night-sky treasures including breath - takin g vie ws of the Moon, planet s, and ev en some bright de ep sky o bjects . The Maksu tov- Casseg rain and refr actor models are also suitable f or e xploring terrestrial vistas. Y our[...]

  • Page 3

    3 Altazimuth base: This wooden base provides a stable base f or the telescope. It allows you to mov e the telescope in alti - tude (up/down) and azimuth (left/right). Photo T ripod Adapter: This allows you to attach y our T ableT op base to an optional photo tripod. It has a 3/8" f emale thread and a pre-installed ¼"-20 adapter to fit vi[...]

  • Page 4

    4 Dovetail Holder: Secures the telescope into the mini-Dob style mount by holding the dovetail bar preinstalled on the telescope tube. 90° Star Diagonal: An adapter used on refractor and cata - dioptric telescopes that positions the e yepiece to a more com- f or table viewing angle and pro vides a right side up image. GoScope 80 T ableT op: Object[...]

  • Page 5

    5 When unpacking the telescope it is suggested that you sav e the inter nal packaging. In the unlikely e vent the product needs to be retur ned the shipping materials can be re-used to ensure it arrives saf ely at its destination. Installing the Optical T ube on the Base Y our new T ableT op telescope arrives with the optical tube already attached [...]

  • Page 6

    6 The first time you use the EZ Finder II y ou will need to remov e the clear plastic tab near the batter y cov er ; this tab pre vents the batter ies from accidentally being drained dur - ing shipment. T urn the power knob clockwise until you hear the “click” indicating that power has been turned on. Look through the back of the reflex sight w[...]

  • Page 7

    7 on the re taining c lip and re mov e the o ld batte ry . Do not over bend the retaining clip . Then slide the new battery under the batter y lead with the positive (+) side facing down and replace the batter y cov er . Attaching the Diagonal GoScope 80 Attach the 90˚ star diagonal to the optical tube. First remove the caps from the diagonal and [...]

  • Page 8

    8 usage because the image in the ey epiece is in verted (upside- down). The e yepiece will also be too low to the ground for comf or table viewing when pointed near the horizon. Placing the T ableT op One of the great assets of the T ableT op is its extremely por - table size. Due to its ov erall shor t length, you will find that viewing while sitt[...]

  • Page 9

    9 shar p focus until the image star ts to blur again, then re verse the rotation of the knob and stop when shar p focus has been achie ved again. Using Y our T elescope Choosing an Observing Site When selecting a location f or obser ving, get as far aw ay as possible from direct ar tificial light such as streetlights, porch lights, and automobile h[...]

  • Page 10

    10 Magnification Limits Every telescope has a useful magnification limit of about 2X per millimeter of aper ture. This comes to 160X for the 80mm T ableT op . Some telescope manuf acturers will use misleading claims of e xcess magnification, such as “See distant galaxies at 640X!”. While such magnifications are technically possible, the actual [...]

  • Page 11

    11 and Saturn are the br ightest objects in the sky after the Sun and the Moon. Y our T ableT op is capable of showing y ou these planets in some detail. Other planets may be visible but will likely appear star-lik e. Because planets are quite small in apparent size, optional higher-power ey epieces are recom - mended and often needed for detailed [...]

  • Page 12

    12 Do Y ou Wear Eyeglasses? If you wear ey eglasses, you may be able to keep them on while you obser ve . In order to do this, your ey epiece must hav e enough “ey e relief ” to allow you to see the entire field of view with glasses on. Y ou can tr y looking through the eye - piece first with your glasses on and then with them off, to see if th[...]

  • Page 13

    13 Specifications #9549 GoScope 80 T ableT op Optical design Refractor Objective lens Achromatic, air-spaced, fully coated Aper ture 80mm F ocal length 350mm F ocal ratio f/4.3 Diagonal 90° prism, accepts 1.25" ey epieces Eyepieces 20mm ey epiece (18x) and 10mm ey epiece (35x), fully coated, 1.25" Finder scope EZ Finder II refle x sight [...]

  • Page 14

    14 Aligning the Secondary Mirror Only the secondary mirror can be adjusted on the T ableT op. If the secondar y mirror seems off center , or the star test as described abov e is showing an elliptical or off center diffrac - tion patter n you ma y need to adjust the tilt of the mirror using the three allen-head screws on the secondary holder . Ap pe[...]

  • Page 15

    15[...]

  • Page 16

    16 One-Y ear Limited W arranty The Orion T ableT op T elescopes are warranted against def ects in materials or workmanship f or a period of one y ear from the date of purchase . This warranty is f or the benefit of the original retail purchaser only . During this warranty period Or ion T elescopes & Binoculars will repair or replace, at Orion?[...]