Introduction
This manual provides essential instructions for the assembly, operation, and maintenance of your Barska Starwatcher 900x114mm Reflector Telescope. Designed for aspiring amateur astronomers, this telescope offers a clear view of celestial objects. Please read this manual thoroughly before use to ensure proper setup and optimal viewing experiences.

Image: Barska Starwatcher Reflector Telescope set up for observing the moon against a starry night sky.
Safety Information
- NEVER look directly at the sun through the telescope or its finderscope. Permanent eye damage or blindness may result.
- Do not leave the telescope unattended in direct sunlight, as it can focus sunlight and create a fire hazard.
- Handle optical components with care to avoid scratches or damage.
- Ensure the tripod is stable on a level surface to prevent tipping.
Package Contents
Your Barska Starwatcher telescope package includes the following components:
- Reflector Optical Tube (114mm aperture, 900mm focal length)
- Equatorial Mount with setting circles and dual slow motion adjustment cables
- Adjustable Aluminum Tripod
- Red Dot Finderscope
- Two Eyepieces (e.g., 25mm, 10mm)
- 3x Barlow Lens
- Moon Filter
- Accessory Tray
- Counterweight and Counterweight Shaft
- Smartphone Adapter
- Operation Manual
Setup Guide
Follow these steps to correctly assemble your telescope:
- Tripod Assembly:
Extend the adjustable tripod legs to your desired height and secure the clamps. Attach the accessory tray bracket to the tripod legs, then place the accessory tray onto the bracket, ensuring it clicks into place. - Equatorial Mount Installation:
Attach the equatorial mount to the top of the tripod using the provided screws. Ensure it is securely fastened. - Counterweight Installation:
Thread the counterweight shaft into the equatorial mount. Slide the counterweight onto the shaft and secure it with the locking screw. Adjust its position for balance later. - Optical Tube Attachment:
Loosen the fastening rings on the optical tube. Carefully place the optical tube onto the equatorial mount's dovetail base, aligning it properly. Gently tighten the fastening rings to secure the tube, avoiding overtightening. - Finderscope Installation:
Attach the finderscope bracket to the optical tube. Slide the red dot finderscope into its bracket and tighten the screws to hold it in place. - Eyepiece and Barlow Lens Installation:
Insert the desired eyepiece (e.g., 25mm for lower magnification) into the focuser. Secure it with the small thumbscrew. For higher magnification, you can insert the 3x Barlow lens into the focuser first, then insert an eyepiece into the Barlow lens. - Smartphone Adapter Attachment:
To use the smartphone adapter, attach your phone to the adapter. Then, attach the adapter with an eyepiece inserted into it, to the telescope's focuser. Adjust the phone's camera to align with the eyepiece view.
Video: Detailed assembly guide for a Newtonian Reflector Telescope with an Equatorial Mount. This video demonstrates the step-by-step process of setting up the tripod, mounting the telescope, and attaching accessories, providing a visual aid for users.
Operating Instructions
- Initial Alignment (Daytime):
Before observing celestial objects, practice during the day. Point the telescope at a distant, stationary object (e.g., a tree or building). Use the red dot finderscope to center the object in its crosshairs. Then, look through the main eyepiece and adjust the focuser knob until the image is sharp. This aligns the finderscope with the main telescope. - Observing Celestial Objects:
Once the finderscope is aligned, use it to locate your desired celestial object. Center the object in the finderscope's crosshairs. Then, look through the main eyepiece. Start with the lowest magnification eyepiece (e.g., 25mm) for a wider field of view, then switch to higher magnification eyepieces or use the Barlow lens as needed. - Focusing:
Use the focuser knobs to achieve a clear and sharp image. Fine adjustments may be needed as objects move or as atmospheric conditions change. - Using the Equatorial Mount:
The equatorial mount allows for precise tracking of celestial objects as they move across the night sky. Use the slow-motion adjustment cables to make fine adjustments to the telescope's position in both Right Ascension and Declination axes. - Using the Moon Filter:
For observing the moon, especially when it is bright, attach the moon filter to the eyepiece to reduce glare and enhance contrast, providing a more comfortable view.

Image: A close-up view of the telescope's focuser, showing an eyepiece inserted and the focusing knobs.
Maintenance
- Cleaning Optics: Use a soft, lint-free cloth and optical cleaning solution specifically designed for telescope lenses. Avoid touching optical surfaces with bare hands.
- Cleaning Exterior: Wipe down the telescope tube and mount with a soft, damp cloth.
- Storage: Store the telescope in a dry, dust-free environment. Keep all lens caps on when not in use to protect the optics.
- Transportation: When transporting, disassemble the telescope and store components in the provided carrying case to prevent damage.
Troubleshooting
- Blurry Image: Adjust the focuser knob slowly until the image is sharp. Ensure the correct eyepiece is used for the desired magnification. Atmospheric conditions can also affect image clarity.
- Cannot See Anything: Check that all lens caps are removed. Ensure the finderscope is properly aligned with the main telescope. Verify that the eyepiece is correctly inserted and secured.
- Difficulty Locating Objects: Ensure the finderscope is accurately aligned. Practice daytime alignment with distant terrestrial objects.
- Unstable Image: Ensure the tripod is set up on a firm, level surface. Tighten all knobs and screws on the mount and tripod. Adjust counterweights for proper balance.
Specifications
| Feature | Specification |
|---|---|
| Optical System | Reflector |
| Objective Lens Diameter | 114 Millimeters |
| Focal Length | 900mm |
| Max Power | 675x |
| Telescope Mount | Equatorial Mount |
| Finderscope | Red Dot (Reflex) |
| Lens Coating | Fully Coated |
| Product Dimensions | 25 x 6 x 6 inches |
| Item Weight | 1 Pounds |
| Model Number | AE10758 |
Warranty and Support
Your Barska Starwatcher Telescope is covered by Barska's Limited Lifetime Warranty. For warranty claims or technical support, please refer to the contact information provided in your product packaging or visit the official Barska website.





