ESSLNB Telescope 36070 Instruction Manual

Introduction

Thank you for choosing the ESSLNB 70mm Refractor Telescope. This telescope is designed for astronomy beginners and enthusiasts, offering clear views of celestial objects and terrestrial landscapes. Its portable design and user-friendly features make it an excellent tool for exploring the world around you and the night sky.

This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most out of your new telescope.

$ESSLNB 70mm Refractor Telescope with tripod, phone adapter, and accessories$

Figure 1: ESSLNB 70mm Refractor Telescope with included accessories.

Safety Information

NEVER look directly at the sun through the telescope or its finderscope, even for an instant, without a professionally made solar filter that covers the entire front of the telescope. Permanent and irreversible eye damage may result.
Do not leave the telescope unsupervised, especially when children are present.
Handle optical components with care to avoid scratches or damage.
Ensure the tripod is stable on a flat, firm surface before use to prevent tipping.

What's in the Box

Verify that all components listed below are included in your package:

1 x Telescope Optical Tube
1 x Adjustable Aluminum Tripod
1 x 45° Erect Diagonal Prism
1 x K25mm Kellner Eyepiece (1.25")
1 x K6mm Kellner Eyepiece (1.25")
1 x 3X Barlow Lens
1 x 5x24 Finderscope
1 x Metal Moon Filter
1 x Phone Adapter
1 x Constellation Diagram (PVC)
1 x User Manual

Diagram showing all included accessories: aluminum tripod, telescope tube, phone adapter, constellation diagram, finderscope, moon filter, K6mm eyepiece, K25mm eyepiece, erect diagonal prism, and 3X Barlow lens.

Figure 2: All components included in the ESSLNB Telescope package.

Setup

1. Assemble the Tripod

Unfold the aluminum tripod legs and extend them to your desired height. Secure the legs using the locking clamps. The tripod is adjustable from 16.1 inches (41cm) to 51.6 inches (131cm) for comfortable viewing.

Diagram illustrating the adjustable height of the aluminum tripod, showing both collapsed and extended states.

Figure 3: Adjustable aluminum tripod for stable observation.

2. Attach the Telescope Tube

Locate the mounting bracket on the telescope tube. Align it with the tripod head and secure it using the provided screws or quick-release mechanism. Ensure the tube is firmly attached and balanced.

3. Install the Finderscope

Slide the 5x24 finderscope into its mounting bracket on the main telescope tube. Tighten the small screws to hold it in place. The finderscope helps in quickly locating objects before observing them with the main telescope.

Close-up view through a finderscope showing a crosshair centered on the moon.

Figure 4: View through the 5x24 finderscope, aiding in target acquisition.

4. Insert the Diagonal Prism

Insert the 45° erect diagonal prism into the focuser tube of the telescope. Secure it by tightening the small thumbscrew on the focuser. This prism provides an erect (non-inverted) image, which is ideal for terrestrial viewing and makes celestial observation more intuitive.

Diagram comparing an inverted image from a standard telescope to an erect image provided by the 45-degree erect-image diagonal prism, showing an astronaut on the moon.

Figure 5: The 45° erect-image diagonal prism ensures comfortable and clear observation.

5. Attach the Eyepiece

Insert either the K25mm or K6mm eyepiece into the diagonal prism. Secure it with the thumbscrew. The K25mm eyepiece offers lower magnification and a wider field of view, while the K6mm eyepiece provides higher magnification for more detailed views.

6. Optional: Use the Barlow Lens

For even higher magnification, insert the 3X Barlow lens into the diagonal prism first, then insert your chosen eyepiece into the Barlow lens. This will treble the magnifying power of the eyepiece.

7. Optional: Attach the Phone Adapter

The adjustable phone adapter allows you to capture photos and videos through the telescope. Attach the phone adapter to an eyepiece, then secure your smartphone to the adapter. Adjust the phone's camera to align with the eyepiece for optimal viewing and capture.

Close-up of the adjustable phone adapter attached to a telescope eyepiece, with a smartphone mounted, showing a bird on the screen.

Figure 6: Adjustable phone adapter for capturing images and videos.

Operating Instructions

1. Locating Objects with the Finderscope

Before using the main telescope, use the finderscope to locate your desired object. Look through the finderscope and center the object in its crosshairs. Once centered, the object should be visible in the main telescope's eyepiece.

2. Focusing the Image

Once an object is in view, slowly turn the focus knob on the focuser tube until the image appears sharp and clear. You may need to make minor adjustments as the object moves across the sky.

3. Adjusting Observation Angle

The telescope can be adjusted by 180° in the vertical direction and 360° in the horizontal direction, allowing for flexible observation of various targets.

Diagram showing the telescope's adjustable observation angles, including 180-degree vertical and 360-degree horizontal rotation, with icons for Moon, Mars, and Jupiter.

Figure 7: The telescope offers a wide range of motion for observation.

4. Using the Moon Filter

For observing the moon, screw the metal moon filter onto the bottom of your chosen eyepiece. This filter reduces the brightness of the moon, enhancing contrast and allowing for more comfortable and detailed viewing of lunar features.

Comparison image showing the moon's appearance with and without a moon filter, highlighting improved detail with the filter.

Figure 8: The moon filter improves lunar observation by reducing glare.

5. Magnification Calculation

The magnification of your telescope is determined by the focal length of the telescope divided by the focal length of the eyepiece. If using the 3X Barlow lens, multiply the result by 3.

Telescope Focal Length: 360mm
K25mm Eyepiece: 360mm / 25mm = 14.4X
K6mm Eyepiece: 360mm / 6mm = 60X
With 3X Barlow Lens:
K25mm + 3X Barlow: 14.4X * 3 = 43.2X
K6mm + 3X Barlow: 60X * 3 = 180X

The telescope offers a magnification range of 15X to 180X.

Video 1: Official ESSLNB video demonstrating the 70mm Astronomical Telescope with Adjustable Tripod, showcasing its features and ease of use.

Maintenance

Cleaning Lenses: Use a soft, lint-free cloth specifically designed for optical lenses. Gently wipe the lens surface in a circular motion. For stubborn smudges, use a small amount of optical cleaning fluid on the cloth, not directly on the lens.
Storage: When not in use, store the telescope in a dry, dust-free environment. Keep all lens caps on to protect the optics from dust and scratches.
Avoid Extreme Temperatures: Do not expose the telescope to extreme hot or cold temperatures, as this can affect its performance and longevity.
Regular Checks: Periodically check all screws and fasteners to ensure they are tight. Do not overtighten.

Troubleshooting

Problem	Possible Cause	Solution
Image is blurry or out of focus.	Incorrect focus setting.	Adjust the focus knob slowly until the image is sharp.
Cannot find objects.	Finderscope not aligned or object is outside field of view.	Align the finderscope with the main telescope. Use the finderscope to locate the object first, then fine-tune with the main telescope.
Image is inverted or reversed.	Diagonal prism not used or incorrect type for terrestrial viewing.	Ensure the 45° erect diagonal prism is correctly installed for erect images.
Telescope shakes or is unstable.	Tripod legs not fully extended or secured.	Ensure tripod legs are fully extended and all locking clamps are tightened. Place on a firm, level surface.

Specifications

Model Number: ES36070A (36070)
Optical Design: Refractor
Aperture: 70mm
Focal Length: 360mm
Eyepieces: K25mm, K6mm (1.25" Kellner)
Barlow Lens: 3X
Finderscope: 5x24 Reflex
Diagonal: 45° Erect-Image Prism
Mount Type: Altazimuth Mount
Tripod: Adjustable Aluminum Tripod (16.1" to 51.6" height)
Product Dimensions: 25 x 25 x 51.6 inches
Item Weight: 4.52 pounds
Manufacturer: ESSLNB
Country of Origin: China

Warranty and Support

ESSLNB is committed to providing high-quality products and excellent customer service. We offer unlimited technical support for your telescope. If you encounter any issues or have questions regarding your product, please do not hesitate to contact us.

Our customer service team is available to assist you within 24 hours. For further assistance, please refer to the contact information provided on the ESSLNB official website or your purchase platform.

For additional resources and product information, you may visit the ESSLNB Store on Amazon.

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ESSLNB 36070

ESSLNB 70mm Refractor Telescope