1. Product Overview
The Celestron Libra 805AZ is a professional astronomical telescope designed for clear and detailed viewing of celestial objects. This manual provides essential information for assembling, operating, maintaining, and troubleshooting your telescope.

1.1 Main Components

- Primary Mirror (Telescope Tube)
- Red Dot Finder Scope
- Eyepiece
- Diagonal
- Adjustment Handle
- Theodolite (Mount Head)
- Dovetail Plate
- Stainless Steel Tripod
- Accessory Tray
2. Setup Instructions
Follow these steps to assemble your Celestron Libra 805AZ telescope. For a visual guide, please refer to the assembly video below.
- Unfold the Tripod: Extend the legs of the stainless steel tripod to a stable position.
- Install the Accessory Tray: Attach the accessory tray to the tripod's central spreader.
- Mount the Main Telescope Tube: Carefully place the main telescope tube onto the mount head (theodolite) and secure it by tightening the knob on the dovetail plate.
- Install the Red Dot Finder Scope: Slide the red dot finder scope into its bracket on the telescope tube and tighten the retaining screws.
- Prepare the Diagonal: Remove any protective caps from the diagonal.
- Install the Diagonal: Insert the diagonal into the focuser of the telescope.
- Install the Eyepiece: Insert your desired eyepiece into the diagonal and secure it with the thumbscrew.
- Remove Objective Lens Cap: Remove the cap from the front of the main telescope tube before observation.
3. Operating the Telescope
Once assembled, your telescope is ready for observation. Follow these guidelines for effective use:
- Aiming: Use the adjustment handle to move the telescope horizontally (360-degree rotation) and vertically to point at your desired celestial object.
- Focusing: Look through the eyepiece and slowly turn the focus knob until the image appears sharp and clear.

- Using the Red Dot Finder Scope: Align the red dot finder with the main telescope. When an object is centered in the finder's red dot, it should be visible in the main telescope's eyepiece.
- Changing Eyepieces: To change magnification, loosen the thumbscrew on the diagonal, carefully remove the current eyepiece, and insert a different one, securing it with the thumbscrew.
- Astrophotography (Optional): A phone adapter can be used to attach your smartphone to the eyepiece for capturing images of the night sky.

4. Maintenance
Proper care will ensure the longevity and performance of your telescope:
- Cleaning Optics: Use a soft, lint-free cloth specifically designed for optical lenses. Avoid touching the lens surfaces with your fingers. For stubborn spots, use a specialized optical cleaning solution.
- Dust Protection: Always keep the dust caps on the objective lens and eyepiece when the telescope is not in use.
- Storage: Store the telescope in a dry, dust-free environment. If possible, keep it in its original packaging or a padded case to protect it from impacts.
- Mechanical Parts: Periodically check all screws and knobs to ensure they are securely tightened. Avoid over-tightening.
5. Troubleshooting
If you encounter issues with your telescope, consider the following common problems and solutions:
- Blurred Images: Ensure the focus knob is properly adjusted. Check if the eyepiece is fully inserted and secured. Verify that the objective lens cap is removed.
- No Image Visible: Confirm that the objective lens cap is removed. Make sure the red dot finder scope is aligned with the main telescope and you are aiming at the correct object.
- Unstable View: Ensure the tripod legs are fully extended and locked, and the accessory tray is securely installed to provide maximum stability. Avoid using the telescope on uneven surfaces.
- Difficulty Moving Telescope: Check that all locking knobs for horizontal and vertical movement are sufficiently loosened.
6. Specifications
| Feature | Specification |
|---|---|
| Model Number | Libra 805AZ |
| Optical System | Refraction |
| Caliber (Objective Aperture) | 80mm |
| Focal Length | 500mm |
| Eyepiece 1 | Aspheric eyepiece 23mm (21.7x magnification) |
| Eyepiece 2 | MA10mm eyepiece (50x magnification) |
| Zenith Mirror | 90 degree positive mirror |
| Optical Coating | FMC antireflective film |
| Star Finder | Red dot star finder |
| Bracket Type | AZ Theodolite |
| Lens Barrel Material | Aluminum alloy |
| Tripod Material | Stainless steel tripod |
| Approx. Package Weight | 16.0 kg |
7. User Tips
- Portability: The telescope package weighs approximately 16.0 kg. Consider this when planning transportation for observing sessions.
- Initial Setup: Take your time during the initial assembly. The provided video demonstration can be very helpful for visual learners.
- Finder Scope Alignment: Properly aligning the red dot finder scope with the main telescope is crucial for easily locating objects in the night sky.
- Eyepiece Selection: Experiment with different eyepieces to find the best magnification for various celestial objects. Lower magnification is often better for wider fields of view (e.g., star clusters), while higher magnification is suitable for detailed views of planets or the Moon.
- Stability: Ensure the tripod is on a firm, level surface to minimize vibrations and provide a steady view.
8. Warranty and Support
For any questions, technical support, or warranty inquiries regarding your Celestron Libra 805AZ telescope, please contact the seller directly using the information below:
- WhatsApp: +86 15211026756
- Email: 15211026756@163.com
Please have your product model and any relevant details ready when contacting support to ensure efficient assistance.





