Introduction
The Celestron Inspire 100AZ Refractor Telescope is designed for novice to intermediate astronomers, offering a wide field of view suitable for observing larger, fainter deep-sky objects. This telescope incorporates several innovative features to enhance the user experience, including fully coated glass optics, a robust altazimuth mount, an integrated smartphone adapter, a built-in red LED flashlight, a large projected reticle finder scope, erect image optics, and a focus micrometer.

Figure 1: The Celestron Inspire 100AZ Refractor Telescope, showcasing its sleek blue optical tube and sturdy tripod.
What's in the Box
Your Celestron Inspire 100AZ Refractor Telescope package includes the following components:
- Optical tube
- Mount with tripod and folding accessory tray connected
- Red LED flashlight
- 90° erect image diagonal
- 20mm Kellner eyepiece
- 10mm Kellner eyepiece

Figure 2: All accessories included with the Celestron Inspire 100AZ Refractor Telescope, neatly arranged.
Setup
The Inspire 100AZ is designed for quick and easy assembly, allowing you to begin observing in minutes. Follow these steps:
- Unfold the Tripod: Simply pop open the tripod legs.
- Secure the Accessory Tray: Turn the lock knob on the accessory tray to secure the tripod in place.
- Attach the Optical Tube: Slide the telescope tube onto the base using the quick-release dovetail mount.
- Install the Finder Scope: Attach the large projected reticle finder scope to its designated slot on the optical tube.
- Insert the Eyepiece: Place the desired eyepiece (20mm or 10mm) into the 90° erect image diagonal.

Figure 3: A user demonstrating the quick setup of the Celestron Inspire 100AZ Telescope, unfolding the tripod.
Video 1: An official Celestron video demonstrating the assembly and key features of the Inspire 100AZ Refractor Telescope, including the smartphone adapter and red LED flashlight.
Operating Your Telescope
Eyepieces
The telescope comes with two Kellner eyepieces: a 20mm and a 10mm. The 20mm eyepiece provides a lower magnification and a wider field of view, ideal for locating objects. The 10mm eyepiece offers higher magnification for more detailed observations once an object is centered.
Focusing
To achieve a clear image, use the focus knobs located on the focuser. The integrated focus micrometer is a numbered scale that indicates the focuser’s position. This allows for quick return to a specific focus point for particular targets, such as a bird's nest during terrestrial viewing or infinity focus for celestial objects.

Figure 4: A detailed view of the focuser and focus micrometer on the Celestron Inspire 100AZ, used for precise image adjustment.
Finder Scope
The large projected reticle finder scope assists in quickly locating objects in the night sky. Align the finder scope with the main telescope during daylight hours by pointing the telescope at a distant, stationary object and adjusting the finder scope until the object is centered in its reticle.
Integrated Smartphone Adapter
The lens cap features a built-in smartphone adapter for basic astrophotography. To use it:
- Place your smartphone against the rubberized friction surface on the outside of the lens cap, ensuring your camera lens aligns with the imaging port.
- Secure the smartphone using the two adjustable bungee cords.
- The inside of the lens cap has a fitting that secures to your eyepiece using two set screws.
- Once attached to the eyepiece, you can capture images through the telescope with your smartphone.

Figure 5: The Celestron Inspire 100AZ Telescope with a smartphone mounted on its integrated adapter, ready for capturing celestial images.

Figure 6: A close-up of the smartphone adapter, showing how a phone is secured to the lens cap for astrophotography.
Built-in Red LED Flashlight
The mount head includes a red LED flashlight. This flashlight provides a soft red glow to illuminate your accessory tray, preserving your night vision. It can also be removed from the mount for use as a portable red light source.

Figure 7: The red LED flashlight integrated into the telescope's mount, providing subtle illumination for night observations.
Altazimuth Mount
The Inspire 100AZ features a solid altazimuth mount with an asymmetrical design, offering both lightweight portability and stability. This type of mount allows for intuitive up-and-down (altitude) and left-and-right (azimuth) movement, making it easy to track celestial objects.
Maintenance
Proper care and maintenance will ensure the longevity and optimal performance of your Celestron Inspire 100AZ Refractor Telescope.
- Cleaning Optics: Use a soft, lint-free cloth specifically designed for optical surfaces. Avoid touching the lens surfaces with your fingers. For stubborn spots, use a specialized optical cleaning solution sparingly.
- Cleaning the Body: Wipe down the telescope's body and mount with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Storage: Store the telescope in a dry, dust-free environment. Keep the lens caps on when not in use to protect the optics. If storing for extended periods, consider using the original packaging or a padded case.
Troubleshooting
Here are some common issues and their potential solutions:
- Blurry Images: Ensure the focuser is properly adjusted. Check that the eyepiece is fully inserted and secured. Atmospheric conditions can also affect image clarity.
- Difficulty Finding Objects: Verify that the finder scope is correctly aligned with the main telescope. Start with the lowest magnification eyepiece (20mm) for a wider field of view to locate objects, then switch to higher magnification.
- Wobbly View: Ensure all tripod leg clamps and the accessory tray lock knob are tightened. The mount should be stable on a flat surface.
Specifications
| Feature | Specification |
|---|---|
| Model Name | Inspire 100AZ Refractor |
| Item Model Number | 22403 |
| Optical Tube Length | 436 Millimeters |
| Objective Lens Diameter | 100 Millimeters |
| Eye Piece Lens Description | 20mm and 10mm Kellner eyepieces |
| Telescope Mount Description | Altazimuth Mount |
| Focus Type | Manual Focus |
| Finderscope | StarPointer™ Pro red dot finderscope |
| Product Dimensions | 38 x 33 x 52 inches |
| Item Weight | 12.4 pounds |
| Batteries | 1 Lithium Metal battery required (included) |
Warranty and Support
Celestron stands behind its products with a strong commitment to quality and customer satisfaction. Your purchase of the Celestron Inspire 100AZ Refractor Telescope includes a 2-Year US Warranty. Additionally, Celestron provides unlimited support from their team of US-based experts, ensuring you have assistance whenever needed.





