BEBANG 90mm Refractor Telescope User Manual

Introduction

Thank you for choosing the BEBANG 90mm Refractor Telescope. This manual provides essential information for setting up, operating, and maintaining your telescope to ensure optimal viewing experiences. Designed for both adults and children, this telescope offers clear, magnified views of celestial objects and terrestrial landscapes.

Image: The BEBANG 90mm Refractor Telescope, showcasing its 90mm aperture for enhanced light gathering.

What's in the Box

Please check the contents of your package against the following list:

• Telescope Optical Tube (90mm Aperture, 500mm Focal Length)
• Adjustable 133cm Tripod
• 25mm Eyepiece
• 10mm Eyepiece
• 3x Barlow Lens
• 5X24 Finderscope
• Phone Adapter
• Backpack
• User Manual

Setup Instructions

1. Unpack Components: Carefully remove all components from the backpack and packaging.
2. Set Up the Tripod: Extend the legs of the 133cm tripod to your desired height. Ensure the tripod is stable on a flat surface.
3. Attach the Telescope Tube: Mount the telescope optical tube onto the tripod's altazimuth mount. Secure it firmly using the provided screws or clamps.
4. Install the Finderscope: Slide the 5X24 finderscope into its bracket on the main telescope tube and tighten the retaining screws.
5. Insert an Eyepiece: Choose either the 25mm or 10mm eyepiece. Insert it into the diagonal (if applicable) or directly into the focuser. Secure it with the small thumbscrew.
6. Attach Barlow Lens (Optional): For higher magnification, insert the 3x Barlow lens into the focuser first, then insert an eyepiece into the Barlow lens.

Image: The telescope mounted on its 133cm adjustable tripod, illustrating its stability and height advantage.

Operating the Telescope

1. Aligning the Finderscope

The finderscope helps locate objects before viewing them through the main telescope. To align it:

1. Point the main telescope at a distant, easily identifiable object (e.g., a tree or building) during daylight hours.
2. Center the object in the main telescope's eyepiece.
3. Look through the finderscope and adjust its alignment screws until the same object is centered in the finderscope's crosshairs.

2. Focusing

Once an object is centered in the eyepiece, slowly turn the focuser knob until the image is sharp and clear. Fine-tune as needed for optimal clarity.

3. Magnification Options

Your telescope comes with different eyepieces and a Barlow lens to achieve various magnifications:

• 25mm Eyepiece: Provides 20X magnification (500mm focal length / 25mm eyepiece = 20X). Ideal for wide-field views.
• 10mm Eyepiece: Provides 50X magnification (500mm focal length / 10mm eyepiece = 50X). Good for more detailed views.
• 3x Barlow Lens: Triples the magnification of any eyepiece.
• With 25mm eyepiece + 3x Barlow: 60X magnification.
• With 10mm eyepiece + 3x Barlow: 150X magnification.

Image: Visual representation of magnification powers from 20X to 150X using the included eyepieces and Barlow lens.

Viewing Modes: Astronomical & Terrestrial

This telescope is versatile for both sky and land observations:

• Astronomical Viewing: Observe the Moon, planets, and brighter deep-sky objects. The 90mm aperture gathers ample light for clear celestial views.
• Terrestrial Viewing: Use the telescope to observe distant landscapes, wildlife, or other land-based objects. The zenith mirror ensures erect images, preventing upside-down views common in some telescopes.

Image: Examples of astronomical viewing (planets) and terrestrial viewing (wildlife) with the telescope.

Using the Smartphone Adapter

The included phone adapter allows you to capture images and videos through the telescope with your smartphone.

1. Attach Phone to Adapter: Secure your smartphone to the adapter, ensuring the phone's camera lens aligns with the adapter's opening.
2. Mount Adapter to Eyepiece: Carefully attach the phone adapter (with phone) to the eyepiece. Ensure it is snug but do not overtighten.
3. Adjust for Viewing: Open your phone's camera app. Adjust the phone's position on the adapter and the telescope's focuser until the image is clear on your phone screen.

Image: A smartphone connected to the telescope using the phone mount adapter, ready for astrophotography.

Maintenance

• Cleaning Lenses: Use a soft, lint-free cloth specifically designed for optical lenses. Gently wipe the lens surfaces. For stubborn spots, use a small amount of optical cleaning fluid. Avoid touching the lens surfaces with your fingers.
• Storage: When not in use, store the telescope in its backpack in a dry, dust-free environment. Avoid extreme temperatures and humidity.
• Handling: Always handle the telescope and its components with care to prevent damage.

Troubleshooting

Specifications

• Brand: BEBANG
• Model: TS90MM
• Optical Design: Refractor
• Objective Lens Diameter: 90mm
• Focal Length: 500mm
• Eyepieces: 25mm (20X), 10mm (50X)
• Barlow Lens: 3x
• Finderscope: 5X24
• Telescope Mount: Altazimuth Mount
• Tripod Height: 133cm (Adjustable)
• Focus Type: Manual Focus
• Compatible Devices: Smartphone (with included adapter)
• Product Dimensions: 5"D x 17.3"W x 11.5"H

Warranty & Support

This BEBANG telescope comes with a 1-Year Warranty from the date of purchase, covering manufacturing defects. For warranty claims, technical assistance, or any questions regarding your product, please contact BEBANG customer support through the retailer's platform or visit the official BEBANG website for contact information.

Please retain your proof of purchase for warranty service.