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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Bushnell 78-9519, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
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Unfortunately, only a few customers devote their time to read an instruction of Bushnell 78-9519. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
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First and foremost, an user manual of Bushnell 78-9519 should contain:
- informations concerning technical data of Bushnell 78-9519
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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 Bushnell 78-9519 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 Bushnell 78-9519, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Bushnell 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 Bushnell 78-9519.
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Table of contents for the manual
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Page 1
D EEP S PACE S ERIES 675 x 60 Refractor Telescope Model 78-9519 22 21 1. 60mm Objective Lens 2. Telescope Main Tube 3. Declination Lock Knob 4. Right Ascension Lock Knob 5. Counterweight Shaft 6. Counterweight 7. Altitude Lock Knob 8. Azimuth Lock Knob 9. Tripod Leg 10. Tripod Leg Middle Section 11. Accessory Tray Brace 12. Accessory Tray 13. Tripo[...]
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Page 2
STANDARD EQUIPMENT • Complete Main Telescope Assembly • Full Length Variable-Height Hardwood Tripod • Equatorial Mount with counterweight and flexible adjustment cables • 4mm, 12mm, 20mm focal length - Eyepieces • Diagonal Mirror, 3x Barlow Lens, Erecting Lens • 5 x 24 Finderscope w/focus adjustment, Accessory Tray • Hardware Pack: Tr[...]
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Page 3
• Loosen the silver screws located at the opposite end of the Fine Adjustment Cables (14). Now, attach the Fine Adjustment Cables to the two silver posts found on the Equatorial Mount . The first post is located just above the Declination Lock Knob (3) , the second post is located below the Right Ascension Lock Knob (4). • Locate the Counterwei[...]
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Page 4
Astronomical telescopes are designed in such a way that the image you will see appear will be UPSIDE DOWN and REVERSED, this is acceptable for viewing celestial bodies. For land-based viewing an “Erector Lens” is used to properly re-orient the image. Selecting an Eyepiece: 1. You should always start viewing with the lowest power eyepiece, which[...]
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Page 5
Telescope LIFETIME LIMITED WARRANTY Your telescope is warranted to be free of defects in materials and workmanship for the lifetime of the original owner. The Lifetime Limited Warranty is an expression of our confidence in the materials and mechanical workmanship of our products and is your assurance of a lifetime of dependable service. If your tel[...]