Bushnell 789514 Instruction Manual

Pages 5

Year 2001

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Bushnell 789514 Telescope Specification

The Bushnell 789514 Telescope is a meticulously designed instrument tailored for both amateur and intermediate astronomers seeking clarity and ease of use in celestial observation. This refractor telescope boasts a 60mm aperture, which aids in gathering substantial light, enabling sharp and bright views of the night sky. It features a 900mm focal length, providing users with a significant magnification capability that enhances the detail and clarity of distant celestial bodies. The telescope is equipped with a fully coated optical glass lens, ensuring maximum light transmission and reducing glare, which results in clearer images and improved color fidelity.

The Bushnell 789514 is designed with a sturdy and durable aluminum tripod that offers stability and reliability during observations. It is also adjustable to suit different viewing heights, making it user-friendly for observers of varying statures. The mount is an alt-azimuth type, providing smooth and precise horizontal and vertical movements, which facilitate easy tracking of celestial objects as they traverse the sky.

Additionally, the telescope includes a range of practical accessories, such as a 3x Barlow lens that triples the magnification of the included eyepieces. These eyepieces, typically a 20mm and a 4mm, offer varying levels of magnification to cater to different observational needs. The Bushnell 789514 also comes with a red dot finder scope, simplifying the process of locating objects in the night sky by providing a wide field of view and easy alignment. With its robust construction and comprehensive features, the Bushnell 789514 Telescope stands out as a versatile and reliable choice for those passionate about exploring the universe.

Bushnell 789514 Telescope F.A.Q.

How do I properly align the Bushnell 789514 telescope?

To properly align the Bushnell 789514 telescope, ensure it is placed on a stable surface. Use the finderscope to locate a bright star or object, then adjust the telescope's position until the object is centered in the eyepiece. Fine-tune the focus if necessary for a clear view.

What should I do if the images through the telescope appear blurry?

If images are blurry, check the focus knob to ensure proper focusing. Make sure the lenses are clean and free of dust or smudges. Also, verify that the telescope is properly aligned and that you are using the appropriate eyepiece for the object you're observing.

How can I clean the lenses of the Bushnell 789514 telescope?

To clean the lenses, use a soft, lint-free cloth or a lens cleaning brush. Gently wipe the lenses to remove dust or smudges. Avoid using any abrasive materials or cleaning solutions that could damage the lens coatings.

Why is it important to let the telescope acclimate to the outdoor temperature before use?

Allowing the telescope to acclimate to the outdoor temperature helps reduce thermal currents inside the telescope tube, which can distort the images. It improves the clarity and sharpness of celestial observations.

What are the steps to collimate the Bushnell 789514 telescope?

Collimation involves aligning the mirrors of the telescope. For Newtonian reflectors, adjust the tilt of the secondary mirror and then the primary mirror using the screws provided. Ensure the mirrors are centered and reflect the image correctly through the eyepiece.

How do I change the eyepiece on the Bushnell 789514 telescope?

To change the eyepiece, first loosen the thumbscrew on the focuser. Carefully remove the current eyepiece and insert the new one. Tighten the thumbscrew to secure the new eyepiece in place. Ensure it's properly seated before use.

What should I check if the telescope mount is unstable?

Check that all the tripod legs are fully extended and locked in place. Make sure the mount is tightly secured to the tripod. Inspect the ground to ensure it is level and stable, and adjust the position if necessary.

Is it possible to use the Bushnell 789514 telescope for astrophotography?

Yes, the Bushnell 789514 can be used for basic astrophotography. Attach a compatible camera adapter to the eyepiece holder. Ensure the telescope is properly aligned and stable. Long exposure settings will help capture better images of celestial objects.

How do I store the Bushnell 789514 telescope when not in use?

Store the telescope in a dry, dust-free environment. Use a protective cover or case to prevent dust accumulation. Make sure the telescope is disassembled if needed and stored in a way that prevents any mechanical stress or damage.

What can I do if the telescope's finderscope is not aligned with the main telescope?

To align the finderscope, choose a distant object and center it in the main telescope. Adjust the screws on the finderscope until the object is also centered in its crosshairs. This ensures both are aligned for easier locating of objects.