How to Set Up Your Celestron CG5: A Step-by-Step Guide

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If you’ve recently purchased a Celestron CG5 telescope mount or are considering adding one to your amateur astronomy toolkit, you’re likely aware of its reputation for performance and quality. Navigating the cosmos requires precise equipment, and the Celestron CG5 stands as a beacon of excellence in a crowded marketplace. However, as with any piece of complex technology, the initial setup can be somewhat intimidating, especially for those who are new to the world of astronomy. That’s why we’ve put together this comprehensive guide to walk you through the entire setup process, step-by-step. With careful attention to each stage of assembly and calibration, you can maximize your Celestron CG5’s capabilities and make your stargazing sessions a resounding success.

Why the Celestron CG5 is a Popular Choice Among Amateurs

If you’re new to the world of telescopes and astronomy, you might be wondering what sets the Celestron CG5 apart from its competition. The popularity of the Celestron CG5 among amateur astronomers is not merely accidental; it stems from a combination of features, quality, and affordability that is hard to find in other models.


One of the primary selling points of the Celestron CG5 is its robust construction. Built with quality materials, this mount is designed to withstand regular use and the occasional bump or knock, making it a long-lasting addition to your astronomy gear. It’s an investment that pays off over time.

Ease of Use

Novice astronomers often find themselves overwhelmed with complicated setups and calibrations. The Celestron CG5 is engineered with user-friendliness in mind. Its intuitive controls and straightforward assembly process make it easy even for beginners to get started quickly.

High-Quality Tracking Capabilities

A telescope is only as good as its mount when it comes to tracking celestial objects. The Celestron CG5 excels in this department with its high-precision motors and accurate tracking algorithms. This ensures that you can follow planets, stars, and other celestial bodies with minimal manual adjustments, making your observation sessions more enjoyable and less laborious.


Perhaps one of the most attractive features of the Celestron CG5 is its competitive pricing. Despite offering a range of features typically found in higher-end models, the CG5 remains affordable for amateur astronomers. This blend of cost-effectiveness and high performance makes it a go-to choice for those who want quality without breaking the bank.


The Celestron CG5 is not a one-trick pony. Its design allows for easy upgrades and the addition of various accessories. Whether you’re into astrophotography or are more focused on visual observations, the mount’s versatility ensures it can adapt to a wide range of astronomical pursuits.

By offering a balanced package of durability, ease of use, high-quality tracking, affordability, and versatility, the Celestron CG5 has carved out a niche for itself in the amateur astronomy community. Its features cater to the needs of both beginners and more experienced hobbyists, making it a wise choice for anyone looking to explore the night sky.

Celestron Advanced CG-5 Set Up Video

What You’ll Need for Setup

  • Celestron CG5 mount and tripod
  • Counterweights
  • Telescope
  • Mounting brackets
  • Power supply
  • Polar scope (optional)
  • Alignment tools (e.g., Allen wrench, screwdriver)

Step 1: Setting Up the Tripod

Setting up the tripod is the foundation of your entire Celestron CG5 assembly process. A stable and level tripod not only ensures accurate tracking but also contributes to the safety of your expensive astronomy gear. Below, we break down the process into detailed steps to guide you through a smooth and secure setup.

Select a Location

The first step is to select a flat, stable surface for your tripod. If you’re stargazing in your backyard, a concrete or paved area is ideal. If you’re in the wild, look for a patch of ground where the tripod will not wobble. You want to avoid sandy or muddy areas, as these can shift under the weight of your setup, causing instability.

Spread the Tripod Legs

Once you’ve identified the perfect spot, spread the tripod legs as far apart as they can go. This will give your Celestron CG5 mount the broadest possible base, increasing stability. Each leg should be fully extended and locked into place with the provided clamps or knobs. Make sure each leg clicks into place or is securely tightened to prevent any accidental collapsing.

Use the Bubble Level

Most Celestron CG5 tripods come with a built-in bubble level for easy leveling. Place the bubble level on the tripod head and adjust the legs until the bubble is centered. This step is crucial for precise tracking and astrophotography. If your tripod doesn’t have a built-in level, consider using a separate carpenter’s level for this step.

Adjust the Tripod Height

Some amateur astronomers prefer their telescope at a specific height for comfortable viewing. Your Celestron CG5 tripod should have adjustable legs that allow you to set the desired height. Unlock the height clamps on each leg, adjust to your preferred height, and then lock the clamps back into place. Make sure all three legs are adjusted to the same height for a level platform.

Double-Check for Stability

Once you believe the tripod is set up correctly, give it a little shake to see if it wobbles. If it does, you’ll need to readjust the legs or find a more stable ground surface. Stability is essential, as an unstable tripod can lead to shaky views and even pose a risk of toppling over, damaging your telescope and mount.

Step 2: Attaching the Mount Head

Once your tripod is set up and leveled, the next crucial step is attaching the mount head. The mount head is the component that will hold your telescope and allow it to move smoothly across the sky. Ensuring that this piece is secured correctly is vital for both the safety of your telescope and the accuracy of your observations. Here’s how to do it:

Prepare the Mount Head and Tripod

Before you begin, make sure that all the necessary screws, bolts, or other fasteners are nearby and within easy reach. Check that the surface of the tripod where the mount head will be placed is clean and free from debris. A clean contact point ensures a more stable connection between the mount head and the tripod.

Align the Mount Head

The tripod usually has a specific point of connection for the mount head, often marked or shaped to fit the corresponding part on the mount head itself. Carefully lift the Celestron CG5 mount head and align it with the tripod’s connection point. This may involve lining up holes for screws or positioning a dovetail connector into its slot.

Secure with Bolts

Once the mount head is in place, you’ll need to secure it using the appropriate fasteners. This is often a set of screws or bolts that pass through both the mount head and the tripod. Insert these and tighten them by hand at first to ensure that you’re not cross-threading or damaging the screws. Once all screws are in place, use a wrench or other tool to firmly tighten them. Make sure you do not overtighten, as that can cause stripping or other damage.

Double-Check the Connection

After securing the mount head, give it a gentle shake and try to rotate it. It should not wobble, shift, or turn independently of the tripod. If it does, you may need to revisit the previous steps and ensure that all fasteners are appropriately tightened.

Attach Auxiliary Equipment

Some Celestron CG5 models come with additional accessories like bubble levels, polar scopes, or accessory trays that attach to the mount head. If you have these, follow the manufacturer’s instructions to attach them at this point.

Step 3: Adding the Counterweights

The counterweights serve a critical function in balancing your telescope setup, ensuring smooth movement and stable observations. Adding them correctly to your Celestron CG5 is crucial for both the longevity of the mount’s motor and the quality of your stargazing or astrophotography sessions. Here’s how to correctly add and adjust the counterweights:


Before adding the counterweights, make sure you’ve read through the manual to identify the correct weight sizes for your specific telescope model. The amount of counterweight needed can differ based on the telescope tube and any accessories like cameras or finderscopes. Ensure that the counterweight shaft is securely attached to the mount head, and that it’s in a horizontal position.

Safety Measures

For safety reasons, it’s a good idea to hold the counterweight shaft with one hand while adding the counterweights with the other. This prevents accidental dropping of the counterweights, which could damage your equipment or cause injury.

Sliding on the Counterweights

Loosen the locking screws on the counterweights and slide them onto the counterweight shaft. Initially, you can place them near the end of the shaft; you’ll fine-tune their positions later. Make sure to secure them lightly with the locking screws to prevent them from sliding off.

Preliminary Balance Test

After the counterweights are on the shaft, perform a basic balance test by loosening the mount locks and moving the telescope to different positions. Watch to see if the telescope maintains its position or if it drifts. Drifting indicates an imbalance, which means you’ll need to adjust the position of the counterweights.

Fine-Tuning Counterweights

To fine-tune, loosen the locking screws on the counterweights and slide them either closer or further away from the mount until the telescope stays in position without any assistance. This process might require several iterations, so be patient. Once balanced, firmly tighten the locking screws to secure the counterweights in place.

Double-Check for Security

After you think you’ve achieved the correct balance, double-check by moving the telescope through various positions and angles. The telescope should remain where you position it without any drift. If it stays put, you’ve successfully balanced your telescope.

By carefully adding and adjusting the counterweights on your Celestron CG5, you ensure that the mount can effectively counterbalance the telescope. This is essential for smooth tracking and prevents undue stress on the mount’s motors, thereby extending the lifespan of your equipment.

Celestron Advanced 80ED CG-5 Turning on the Mount Set Up

Step 4: Mounting the Telescope

Successfully mounting your telescope onto the Celestron CG5 is essential for a smooth and rewarding stargazing experience. Whether you’re using the telescope for visual observations or for astrophotography, a properly mounted scope will ensure accurate tracking and stability. Here’s a detailed breakdown of how to mount your telescope onto the Celestron CG5.

Gather Necessary Tools and Accessories

Before starting, gather all the tools and accessories you’ll need, such as Allen wrenches or screwdrivers, along with any specialized bolts or screws that came with your telescope or mount. Make sure you’ve consulted your telescope’s manual to confirm you have everything required for mounting.

Position the Saddle Plate

The Celestron CG5 usually comes with a saddle plate that will hold the telescope. This plate may have a “Vixen-style” or “Losmandy-style” design, depending on the model. Make sure the saddle plate is oriented correctly and that the clamps or screws are loosened to prepare for the telescope.

Attach the Dovetail Bar

Your telescope should have a dovetail bar that will fit into the saddle plate. If it’s not already attached to your telescope, now is the time to secure it. Align the holes on the dovetail bar with those on the telescope and tighten the screws until they are firmly in place.

Carefully Position the Telescope

Lift the telescope carefully, aligning the dovetail bar with the saddle plate on the CG5 mount. Slide the dovetail bar into the saddle until it sits securely. This may be easier with two people—one to hold the telescope and one to ensure it aligns correctly.

Secure the Telescope

Once the dovetail is in the saddle plate, tighten the saddle plate’s clamps or screws to secure the telescope. Some models have multiple clamps for added security. Make sure they are all firmly tightened. Double-check to ensure there is no wiggle or movement between the telescope and the mount.

Final Balance Check

With the telescope mounted, now is a good time to perform a final balance check. Loosen the axis locks and gently move the telescope through its full range of motion, checking for any imbalances that might have been introduced after mounting the telescope. Adjust the counterweights as necessary.

Attach Additional Accessories

Now that your telescope is securely mounted, you can attach any additional accessories like finderscopes, eyepieces, or cameras. Just remember that adding more weight may require you to revisit and adjust your counterweights for optimal balance.

Step 5: Connecting the Power Supply

Your Celestron CG5 will have specific power requirements outlined in the user manual. Typically, this will be a 12V DC supply, but always double-check to ensure you have the correct specifications. Knowing the exact power requirements will help you choose an appropriate power source, whether it’s a specialized telescope power tank, a car battery, or an AC adapter.

Choose an Appropriate Power Source

Based on your needs and where you’ll be using your telescope, select the appropriate power source. If you are near a building or outlet, you may opt for an AC adapter. However, if you are stargazing in a remote location, a portable power tank or even a car battery can be suitable options. Make sure the chosen power source meets or exceeds the power requirements of your CG5 mount.

Prepare the Power Cables

Ensure your power cables are untangled and in good condition. Frayed or damaged cables can cause interruptions in power supply and are a safety hazard. Most power supplies will connect to the Celestron CG5 through a round DC jack, but check your user manual to confirm the type of connector required.

Plug In the Power Supply

Locate the power input jack on the mount, which is generally situated near the hand controller port. Carefully plug in the DC connector (or other connector types based on your model) from your power source into this jack. Make sure the connection is snug but not forced.

Turn On the Mount to Test

Before you engage in any stargazing or astrophotography, turn on the mount to ensure the power supply is working as expected. Look for signs of life like LED indicators lighting up, or listen for the sound of the motors initializing. If your mount features a hand controller, check to see that it boots up correctly.

Secure the Setup

Ensure the power source is placed in a location where it won’t be knocked over or disconnected accidentally. Secure any loose cables to prevent tripping hazards or accidental disconnection, using cable ties or Velcro straps if necessary.

Step 6: Optional Polar Alignment

Polar alignment is an optional but invaluable procedure when setting up your Celestron CG5, particularly if you’re interested in long-exposure astrophotography or precise tracking over extended periods. Achieving good polar alignment minimizes tracking errors and makes it easier for the mount to accurately follow celestial objects across the sky. Here’s how to go about it:

Understand the Importance

While it’s possible to observe celestial objects without polar alignment, doing so significantly improves the performance of your Celestron CG5. This is crucial for astrophotography, where even slight movements can blur your captured images, and it helps in visual observations by keeping the object centered in your eyepiece for longer periods.

Align the Mount to True North (Northern Hemisphere) or True South (Southern Hemisphere)

Start by pointing the mount’s polar axis roughly toward true North (or true South in the Southern Hemisphere). This is most easily done by locating Polaris in the Northern Hemisphere, which is very close to the North Celestial Pole. In the Southern Hemisphere, you can use the Southern Cross as a guide.

Use the Built-in Polar Scope or Polar Finder App

Many Celestron CG5 mounts come equipped with a built-in polar scope, which makes alignment easier. If yours does, follow the instructions in the user manual to align the reticle with Polaris or another reference star. Alternatively, you can use a polar finder app on your smartphone, which can guide you through the alignment process.

Polar alignment knobs for the Celestron CG-5 Advanced GT Telescope Mount

Adjust Altitude and Azimuth

Once you’re roughly aligned, you’ll need to make finer adjustments using the mount’s altitude and azimuth controls. These controls allow you to adjust the tilt and rotation of the mount to precisely align it with the celestial pole. Follow your mount’s manual for specific guidance on making these adjustments.

Confirm Alignment Using Software (Optional)

If you have access to astrophotography software that includes a polar alignment routine, such as PHD2, you can use it for additional confirmation and fine-tuning. This is particularly useful for astrophotography setups requiring very precise alignment.

Lock All Adjustments and Double-Check

Once you’re satisfied with your polar alignment, lock down any adjustable elements to ensure the alignment doesn’t shift during your observation session. It’s a good practice to double-check your alignment by tracking a celestial object for a few minutes to ensure it remains centered.

Test with Longer Exposure (For Astrophotographers)

If you’re into astrophotography, now is the time to take a few longer-exposure test shots. Check for star trailing or other signs of misalignment. If needed, make slight adjustments and repeat the test.

Conclusion: Unleashing the Full Potential of Your Celestron CG5

Setting up your Celestron CG5 may initially seem like a daunting task, especially if you’re new to astronomy or astrophotography. However, by meticulously following the steps outlined in this guide—from setting up the tripod to optional polar alignment—you’re not just assembling a piece of equipment; you’re setting the stage for countless celestial adventures.

Each step, whether it’s ensuring a stable power supply or achieving precise polar alignment, contributes to the overall performance and reliability of your setup. While some steps like polar alignment may be optional, investing the time to perform them can significantly enhance your stargazing or astrophotography experience.

Your Celestron CG5 is a sophisticated piece of technology, designed to unlock the mysteries of the universe right from your backyard. By setting it up correctly, you are maximizing its capabilities and setting yourself up for success. So the next time you look up at the night sky, know that you’re well-prepared to explore it in all its glory.

If you want to explore other Celestron mounts, check also the famous Celestron CGX mount.

Frequently Asked Questions (FAQs)

Q: Can I use the Celestron CG5 mount with other telescope brands?

  • A: Yes, the Celestron CG5 mount is compatible with telescopes that have a Vixen-style dovetail bar.

Q: How much weight can the Celestron CG5 handle?

  • A: The mount can carry up to approximately 35 pounds, including the telescope and accessories.

Q: Is it necessary to perform a polar alignment?

  • A: While it’s not strictly necessary for casual observation, it’s beneficial for astrophotography and precise tracking.

Q: Can I upgrade the Celestron CG5 firmware?

  • A: Yes, Celestron regularly releases firmware updates that can be installed via a computer.

Q: What kind of power supply do I need?

  • A: You will need a 12V DC power supply with at least 1.5 amps for optimal performance.

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