1. Introduction
Welcome to the ESSLNB 80mm Aperture 700mm Astronomy Telescope. This manual provides detailed instructions for assembling, operating, and maintaining your telescope to ensure optimal performance and an enjoyable stargazing experience. Designed for both beginners and experienced enthusiasts, this telescope offers powerful magnification and clear optics for observing celestial and terrestrial objects.

Figure 1: ESSLNB Astronomy Telescope and Included Accessories
2. Package Contents
Please check the package contents against the list below. If any parts are missing or damaged, please contact customer support.

Figure 2: Detailed view of all accessories
- Aluminum Tripod
- Telescope Tube
- Hoop (for mounting telescope tube)
- Finderscope (5x24)
- 10mm Eyepiece
- 25mm Eyepiece
- Barlow Lens (3X)
- Zenith Mirror (Diagonal)
- Stargazing Phone Mount
- Wireless Remote
- Wireless Remote Instruction Card
- Phone Adapter
- Accessory Tray
- App Install Card
- Moon Filter
- Instruction Manual (this document)
- Warranty Card
3. Setup Guide
Follow these steps to assemble your ESSLNB telescope.
3.1 Assembling the Tripod
- Unfold the Aluminum Tripod (1) and extend the legs to your desired height. The tripod is adjustable from 25.2 inches to 42.1 inches.
- Secure the legs using the easy lock mechanisms.
- Attach the Accessory Tray (13) to the center brace of the tripod for convenient storage of eyepieces and other small accessories.

Figure 3: Adjustable Aluminum Tripod
3.2 Mounting the Telescope Tube
- Attach the Telescope Tube (2) to the tripod head using the Hoop (3). Ensure it is securely fastened.
- Mount the Finderscope (4) onto the designated slot on the telescope tube.
- Insert the Zenith Mirror (Diagonal) (8) into the focuser of the telescope.
- Choose an Eyepiece (5 or 6) and insert it into the Zenith Mirror. For higher magnification, you can also use the Barlow Lens (7) between the Zenith Mirror and the eyepiece.

Figure 4: Telescope Components Overview
3.3 Installing the Phone Adapter and Stargazing Phone Mount
Phone Adapter (12): Attach your mobile phone to the Phone Adapter. This adapter connects your phone to the telescope's eyepiece for capturing images and videos.
Stargazing Phone Mount (9): This mount is designed for intelligent tracking of stars and planets. Secure your phone onto the Stargazing Phone Mount, which attaches to the main telescope tube. This allows your phone to act as a smart guide for celestial navigation.

Figure 5: Phone Adapter Installation Steps

Figure 6: Stargazing Phone Mount in use
For a visual guide on assembly and features, please watch the official product video:
Video 1: ESSLNB Telescope Unboxing and Setup Guide
4. Operating Instructions
4.1 Basic Observation
- Aiming: Use the Finderscope (4) to initially locate the object you wish to observe. Align the crosshairs of the finderscope with your target.
- Focusing: Look through the eyepiece and slowly turn the Focus Knob until the image is clear and sharp.
- Adjusting Magnification:
- Start with the lower power 25mm Eyepiece (6) for a wider field of view, making it easier to locate objects.
- Once the object is centered, switch to the higher power 10mm Eyepiece (5) for more detailed observation.
- For maximum magnification, insert the 3X Barlow Lens (7) before the eyepiece.

Figure 7: Magnification Options
4.2 Using the Stargazing App
- Download and install the recommended stargazing app using the App Install Card (14).
- Mount your smartphone on the Stargazing Phone Mount (9) on the telescope tube.
- Open the app and follow its instructions to calibrate the telescope's position (latitude and longitude).
- Select a celestial body you wish to observe within the app. The app will guide you with arrows to point your telescope in the correct direction.
- Once aligned, you can view detailed information about the celestial body directly on your phone screen.
4.3 Capturing Images and Videos with Wireless Remote
- Attach your mobile phone to the Phone Adapter (12) and connect it to the telescope's eyepiece.
- Ensure the Wireless Remote (10) is paired with your smartphone (refer to Wireless Remote Instruction Card (11) for pairing details).
- Once your phone is aligned with the telescope's view, use the Wireless Remote to remotely trigger your phone's camera to take clear, bright pictures or videos without disturbing the telescope's alignment.

Figure 8: Wireless Remote and Phone Adapter in action
5. Maintenance
- Cleaning Lenses: Use a soft, lint-free cloth specifically designed for optical lenses. Gently wipe the lens surfaces. Avoid touching the optical surfaces with your fingers.
- Cleaning the Body: Wipe the telescope tube and tripod with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the telescope in a dry, dust-free environment. Keep all caps on the lenses and eyepieces to prevent dust accumulation.
- Moisture: Avoid exposing the telescope to extreme humidity or rain. The telescope has an IPX4 water resistance level, meaning it is protected against splashing water from any direction, but it is not waterproof.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Image is blurry or out of focus. | Incorrect focus, atmospheric conditions, wrong eyepiece. | Adjust the Focus Knob slowly. Wait for stable atmospheric conditions. Ensure the correct eyepiece is used for the desired observation. |
| Cannot find objects easily. | Finderscope not aligned, starting with high magnification. | Align the Finderscope with the main telescope. Start with the lowest magnification eyepiece (25mm) to locate objects, then switch to higher power. Use the stargazing app for guidance. |
| No image visible. | Lens caps on, eyepiece not inserted correctly, object too dim. | Remove all lens caps. Ensure the eyepiece and diagonal are fully and correctly inserted. Try observing brighter objects first. |
| Wireless remote not connecting. | Battery low, not paired, out of range. | Replace battery. Re-pair the remote with your phone (refer to remote instructions). Ensure remote is within operating range of your phone. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | ES2025 |
| Type | Monocular |
| Objective Lens Diameter | 80mm |
| Focal Length | 700mm |
| Eyepiece Diameter | K10mm, K25mm |
| Magnification | Up to 210X (with 3X Barlow Lens) |
| Lens Coating Description | FMC (Fully Multi-Coated) |
| Focus Type | DETACHED |
| Water Resistance Level | IPX4 |
| Tripod Height Adjustment | 25.2" to 42.1" |
| Package Weight | 5.4 kg |
| Package Dimensions (L x W x H) | 90cm x 34cm x 19cm |

Figure 9: 80mm Large Aperture with FMC Coating
8. User Tips
- Start Simple: For beginners, it's often easiest to start by observing the Moon. Its brightness and prominent features make it an excellent first target.
- Dark Skies: For the best stargazing experience, try to find a location away from city lights. Light pollution significantly reduces the visibility of fainter celestial objects.
- App Integration: The included stargazing app is a powerful tool. Utilize its star-finding capabilities to quickly locate constellations, planets, and other deep-sky objects without needing extensive astronomy knowledge.
- Stable Surface: Always set up your tripod on a stable, level surface to prevent vibrations and ensure clear viewing.
- Patience is Key: Astronomy requires patience. Allow your eyes to adjust to the dark, and take your time to locate and focus on objects.
9. Warranty and Support
Your ESSLNB telescope comes with a 12-month warranty. For any technical support, questions, or issues, please refer to the Warranty Card (17) for contact information or reach out to our customer service team. Our expert team is available to provide support within 24 hours.



