Celestron CGEM II Computerized Telescope Mount Review

Let’s Dive into Celestron CGEM II Computerized Telescope Mount

The Celestron CGEM II Computerized Telescope Mount is Celestron’s answer to amateur astronomers seeking a stable, precise, and user-friendly platform for both visual observation and astrophotography. This mount is designed to support larger optical tubes, boasts an impressive object database, and incorporates features aimed at simplifying the often-intimidating process of polar alignment. With its blend of robust construction and smart technology, the CGEM II promises to be a valuable tool for stargazers of all skill levels, and I am here to share my experiences.

For years, I’ve struggled with mounts that were either underpowered for my equipment or overly complex to operate, which led me to research alternatives. I was drawn to the CGEM II due to its advertised payload capacity and computerized features, hoping it would bridge the gap between my needs and the available technology.

Unboxing the Celestron CGEM II revealed a well-packaged and substantial piece of equipment. The mount itself felt solid and well-constructed, with a contemporary design that looks both functional and appealing, and I was particularly pleased with the smooth movement of the axes when adjusting the altitude and azimuth.

Compared to my previous mount, an older Meade LXD55, the CGEM II immediately impressed me with its apparent build quality and computerized features. I considered the Celestron Advanced VX mount, but the CGEM II’s higher payload capacity sealed the deal, ensuring it could handle future telescope upgrades.

My first impression was one of cautious optimism as the Celestron CGEM II Computerized Telescope Mount looked like a serious upgrade and I was genuinely excited to see if it would live up to expectations under the night sky.

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Real-World Testing: Putting Celestron CGEM II Computerized Telescope Mount to the Test

First Use Experience

My first test run with the Celestron CGEM II took place at a remote dark sky site known for its excellent seeing conditions. I set up the mount with my 8-inch Schmidt-Cassegrain telescope and spent the evening navigating through the constellations, focusing on deep-sky objects like nebulae and galaxies.

The performance of the CGEM II under these pristine conditions was remarkable as its tracking accuracy was spot-on, even at high magnifications. While it took some time to familiarize myself with the hand controller’s menu system, the intuitive design made the learning curve manageable.

One minor issue I encountered was the need for careful balancing of the telescope, as even a slight imbalance could affect the mount’s tracking performance and it was crucial to distribute the weight evenly across both axes for optimal results.

Extended Use & Reliability

After several months of regular use, the Celestron CGEM II has proven to be a reliable and capable mount. The mount has endured several trips to the dark sky locations and even survived a few unexpected rain showers with no ill effects, demonstrating its robust construction and weather resistance.

Despite the rigorous use, there are no signs of significant wear and tear, and the motors still run smoothly and quietly. Maintenance is minimal, mostly consisting of occasional cleaning and lubrication of the moving parts.

Compared to my previous mount, the CGEM II is a significant improvement in terms of both stability and tracking accuracy and it has allowed me to push the limits of my astrophotography, capturing sharper and more detailed images than ever before.

Breaking Down the Features of Celestron CGEM II Computerized Telescope Mount

Specifications

• Payload Capacity: The CGEM II boasts a 40 lbs payload capacity, allowing it to securely hold a wide range of telescopes and accessories. This high payload capacity is critical for supporting larger optical tubes and imaging equipment without sacrificing stability.
• Dovetail Saddle: The mount features a dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle, providing compatibility with a wide range of telescopes. This versatility ensures compatibility with both smaller and larger telescopes, making it a flexible investment for the future.
• Tripod: The CGEM II comes with a robust 2″ steel legs with height index marks for quick leveling, offering a stable platform for observation and imaging. These sturdy legs minimize vibrations and ensure accurate tracking.
• Hand Control: The hand control has a USB 2.0 port allowing direct connection to a PC via ASCOM supported software. The USB connectivity streamlines the process of controlling the telescope from a computer.
• Object Database: The mount includes a vast 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects. This extensive database provides easy access to a wide variety of celestial objects, which is invaluable for both beginner and experienced astronomers.
• Internal Cabling: The CGEM II features internal cabling throughout for worry-free remote operation, reducing the risk of tangling and damage. The internal cabling helps prevent cable snags and ensures a clean setup for remote operation.
• Motors: It uses a Low cog DC Servo motor with integrated optical encoders for smooth, quiet operation. These low-cog DC servo motors deliver smooth, precise tracking with minimal noise.
• Meridian Tracking: The mount is Able to track past the meridian allowing seamless imaging. This extended tracking capability allows for uninterrupted imaging of objects as they pass through the meridian.
• Periodic Error Correction (PEC): Features Permanent periodic error corrections allowing users to train out the worm gears periodic errors once, while the mount retains the PEC recordings. PEC is crucial for long-exposure astrophotography, minimizing tracking errors.
• Software Features: The CGEM II includes various software features like mount calibration, database filter limits, hibernate, five alignment procedures, and user-defined slew limits. These software features offer a customizable and user-friendly experience.
• Polar Alignment: It has a built-in polar alignment program to polar align on any star in the sky. This feature simplifies the polar alignment process, even when the celestial pole is not visible.
• Clutch Levers: Longer clutch levers to make tightening and loosening of clutches easier. The longer clutch levers provides a comfortable grip and reduce the effort required to lock and unlock the axes.
• Solar System Alignment: The CGEM II offers a Solar System alignment method allows to view the moon and planets during the day. This feature allows for daytime observations of the Moon and planets, expanding the observing opportunities.
• Custom Rate 9: The CGEM II has a Custom Rate 9 feature allows to set maximum slew rate. Custom rate 9 allows you to set a maximum slew rate.
• Communication Port: The mount features an RS-232 communication port on hand control to control the telescope via a personal computer. The RS-232 port enables computer control for advanced users.
• Polar Shaft: The CGEM II features a precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings. The steel Polar shafts are supported by tapered roller bearings and ball bearings.
• GPS Compatibility: The mount is GPS-compatible with optional SkySync GPS Accessory. With the SkySync GPS accessory, the mount can automatically acquire its location and time, further simplifying setup.

Performance & Functionality

The Celestron CGEM II performs admirably in its primary role: providing a stable and accurate platform for astronomical observation and astrophotography. Its tracking accuracy is exceptional, maintaining objects in the field of view for extended periods, which is crucial for long-exposure imaging.

The computerized GoTo system is highly accurate, quickly and efficiently locating celestial objects from its extensive database. The mount also handles slewing smoothly and quietly, minimizing vibrations that could affect image quality.

While the hand controller can be a bit daunting at first, with its many menus and options, the intuitive design and clear instructions make it relatively easy to learn. The Celestron CGEM II Computerized Telescope Mount meets and exceeds expectations, offering reliable and accurate performance.

Design & Ergonomics

The Celestron CGEM II boasts a modern and functional design, constructed from high-quality materials that inspire confidence in its durability. The mount feels solid and well-balanced, and the smooth movement of the axes makes it a pleasure to use.

The hand controller is ergonomically designed, fitting comfortably in the hand, and the buttons are clearly labeled and responsive. While there is a slight learning curve associated with mastering the controller’s functions, the intuitive layout makes it relatively easy to navigate.

Durability & Maintenance

The Celestron CGEM II is built to last, with a robust construction that can withstand the rigors of frequent use. The high-quality materials and solid engineering ensure that it will provide reliable performance for years to come.

Maintenance is relatively straightforward, primarily consisting of occasional cleaning and lubrication of the moving parts. With proper care, the CGEM II should provide many years of trouble-free operation.

Accessories and Customization Options

The Celestron CGEM II comes with a standard set of accessories, including a hand controller, counterweights, and a tripod. While these accessories are sufficient for basic operation, there are numerous customization options available to enhance the mount’s performance and functionality.

The mount is compatible with a variety of aftermarket accessories, such as autoguiders, electronic focusers, and GPS modules. These accessories can significantly improve the accuracy and convenience of astronomical observing and imaging.

Pros and Cons of Celestron CGEM II Computerized Telescope Mount

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Who Should Buy Celestron CGEM II Computerized Telescope Mount?

The Celestron CGEM II is perfect for amateur astronomers who are serious about both visual observation and astrophotography. It is an excellent choice for those who need a mount that can handle larger telescopes and imaging equipment.

Those who are new to computerized telescopes might find the hand controller a bit overwhelming at first and may need to invest some time in learning its features. If you prefer a simpler, more manual mount, the CGEM II might not be the best choice for you.

A must-have accessory is an autoguider to further improve tracking accuracy for long-exposure astrophotography.

Conclusion on Celestron CGEM II Computerized Telescope Mount

The Celestron CGEM II Computerized Telescope Mount is a solid investment for amateur astronomers seeking a reliable and accurate platform for observation and astrophotography. Its high payload capacity, accurate GoTo system, and smooth tracking performance make it an excellent choice for a wide range of telescopes and imaging equipment.

The price is justified given the mount’s performance, features, and build quality, making it a worthwhile investment for serious stargazers. I would personally recommend the CGEM II to anyone looking to upgrade their mount and take their astronomical pursuits to the next level.

If you’re ready to elevate your astronomical experiences, the Celestron CGEM II is waiting to guide you through the cosmos. So, invest in your passion and prepare to be amazed by the wonders of the universe!