Bushnell 789500 Instruction Manual

Pages 12

Year 2001

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Bushnell 789500 Telescope Specification

The Bushnell 789500 Telescope is designed for amateur astronomers seeking a balance between ease of use and performance. It features a 60mm aperture, effectively gathering light for clear and bright viewing of celestial objects. The focal length of 700mm allows for detailed observations of the moon, planets, and some deep-sky objects. Equipped with a refractor optical design, the telescope ensures minimal maintenance and delivers sharp, high-contrast images.

To enhance the user experience, the telescope includes a sturdy aluminum tripod providing stability during observation sessions. The included alt-azimuth mount facilitates smooth tracking of objects across the sky, making it ideal for beginners. A 1.25-inch rack and pinion focuser ensures precise focusing, accommodating a variety of eyepieces for different magnifications. The telescope comes with two eyepieces, a 20mm for wider views and a 4mm for higher magnification, allowing users to tailor their viewing experience.

The telescope's lightweight and portable design make it convenient for transport, encouraging exploration from various vantage points. Its setup is straightforward, requiring no specialized tools, which is perfect for novice users. Additional features include a finderscope that assists in locating objects and a diagonal mirror for comfortable viewing angles. The Bushnell 789500 is crafted from durable materials, ensuring longevity and reliability. This telescope is a valuable entry-level instrument, offering both educational and recreational opportunities for those new to astronomy.

Bushnell 789500 Telescope F.A.Q.

How do I properly align the Bushnell 789500 Telescope?

To properly align your Bushnell 789500 Telescope, start by setting it up on a stable surface. Use the finderscope to locate a bright object in the sky. Adjust the telescope’s altitude and azimuth controls to center the object in the viewfinder. Once centered, lock the controls to maintain alignment.

What should I do if the image through the telescope is blurry?

If the image is blurry, ensure that the focus knob is adjusted correctly. Check to make sure the lenses are clean and free of dust or smudges. It may also help to let the telescope acclimate to outdoor temperatures if brought from indoors.

How can I clean the lenses of my Bushnell 789500 Telescope?

To clean the lenses, use a soft, lint-free cloth and a lens cleaning solution. Gently wipe the lenses in a circular motion. Avoid using abrasive materials or excessive force as this can scratch the lenses.

What is the best way to store the Bushnell 789500 Telescope?

Store the telescope in a cool, dry place. Use a dust cover to protect it from dirt and debris. Keep it away from direct sunlight and ensure that it's stored fully collapsed to prevent damage to the components.

How do I adjust the finderscope on the Bushnell 789500 Telescope?

Adjust the finderscope by loosening the adjustment screws and aligning it with the main telescope. Center an object in the telescope's view and then adjust the finderscope until the same object is centered in its crosshairs. Tighten the screws once aligned.

Can I use my Bushnell 789500 Telescope during the day?

Yes, the Bushnell 789500 Telescope can be used during the day for terrestrial viewing. Ensure that you do not point it directly at the sun unless using a proper solar filter to avoid damaging your eyes and the telescope.

What should I do if the telescope mount is unstable?

Check if all the screws and bolts are tightened securely. Ensure that the tripod legs are fully extended and positioned on a flat surface. Adding weight to the tripod's center column can also help stabilize it.

How can I track a moving object in the sky with my telescope?

To track a moving object, such as a planet or the moon, use the slow-motion control knobs to make fine adjustments as the object moves across the sky. Practice will help you become more adept at following objects smoothly.

Why can't I see anything through the telescope at night?

Ensure that the lens cap is removed and the telescope is properly focused. Check for obstructions in the optical path. If conditions are humid, dew might have formed on the lens, requiring cleaning.

How do I maintain the tripod of my Bushnell 789500 Telescope?

Regularly check the tripod for any loose screws or parts. Clean it with a dry cloth to prevent corrosion. Store it in a dry place, and avoid exposure to moisture or extreme temperatures to prolong its lifespan.