Celestron Advanced VX 11" f/10 Schmidt-Cassegrain Telescope User Manual

1. Introduction

This manual provides instructions for the assembly, operation, and maintenance of your Celestron Advanced VX 11" f/10 Schmidt-Cassegrain Telescope. This instrument features an 11-inch (2800mm) f/10 Schmidt-Cassegrain optical tube with Celestron's premium StarBright XLT coatings, designed to enhance light transmission for bright and clear images. The Advanced VX mount is a computerized German Equatorial Mount, offering precise tracking and GoTo capabilities for astronomical observation.

Image Description: The Celestron Advanced VX 11-inch Schmidt-Cassegrain Telescope, showing the optical tube, equatorial mount, tripod, and two counterweights.

2. What's in the Box

Verify that all components are present before beginning assembly:

• Advanced VX Computerized German Equatorial Mount
• Tripod
• Accessory Tray
• Optical Tube Assembly (OTA) - 11" (2800mm) f/10 Schmidt-Cassegrain
• 40mm 1.25" Eyepiece
• 1.25" 90-Degree Mirror Diagonal
• 9x50 Optical Finderscope
• NexStar+ Hand Control (EQ)
• DC Power Cable (item# 18769)
• Hand Control Holster
• 3 x 12 lbs Counterweights

3. Setup and Assembly

Assembly typically takes approximately 45 minutes. It is recommended to have assistance when mounting the optical tube due to its size and weight.

3.1 Unpacking

Carefully remove all components from their packaging. Retain the original packaging for future transport or storage.

3.2 Tripod and Mount Assembly

Extend the tripod legs and secure them. Attach the accessory tray to the center spreader. Mount the Advanced VX equatorial head onto the tripod, ensuring it is level and securely fastened.

Image Description: The Advanced VX equatorial mount attached to its tripod, with the NexStar+ hand control visible.

3.3 Attaching the Optical Tube

With assistance, carefully lift the 11" Schmidt-Cassegrain optical tube and attach its dovetail bar to the mount's saddle plate. Ensure the tube is balanced and the locking clamps are tightened.

Image Description: A close-up view of the Celestron 11-inch Schmidt-Cassegrain optical tube assembly (OTA).

3.4 Installing Counterweights

Slide the counterweights onto the counterweight shaft. Adjust their position to achieve proper balance of the optical tube on the mount. This prevents undue strain on the mount's motors.

Image Description: A single gray counterweight for a telescope mount.

3.5 Attaching Accessories (Eyepiece, Diagonal, Finderscope)

Insert the 90-degree mirror diagonal into the visual back of the optical tube. Then, insert the 40mm eyepiece into the diagonal. Attach the 9x50 optical finderscope to its bracket on the optical tube and align it with the main telescope optics.

Image Description: The Celestron 11-inch Schmidt-Cassegrain optical tube with a 90-degree diagonal, eyepiece, and finderscope attached.

4. Operation

4.1 Powering On and Hand Control

Connect the DC power cable to the mount and a suitable power source. Turn on the mount. The NexStar+ Hand Control will illuminate and guide you through the initial setup process, including setting date, time, and location.

4.2 Initial Alignment (Star Alignment)

For accurate tracking and GoTo functionality, perform a star alignment using the NexStar+ Hand Control. This typically involves selecting and centering two or more bright stars. Accurate latitude and longitude coordinates are crucial for precise alignment.

4.3 Focusing

Use the focus knob on the rear of the optical tube to achieve a sharp image. Turn the knob slowly until the celestial object appears clear and defined. For high magnifications, minor vibrations may occur during focusing but should settle quickly.

4.4 Navigating the Sky

Utilize the NexStar+ Hand Control's database to select celestial objects. The mount will automatically slew the telescope to the chosen object and track it as it moves across the sky. The integer gear ratios and programmable Periodic Error Correction (PEC) help maintain accurate tracking.

5. Maintenance and Care

5.1 Optical Tube Care

Keep the corrector plate clean. Use a soft brush to remove dust, then a specialized optical cleaning solution and cloth for smudges. Avoid touching optical surfaces directly. Replace dust caps when not in use.

5.2 Mount and Tripod Care

Periodically check all screws and bolts for tightness. Keep the mount's gears and moving parts free from dust and debris. Avoid exposing the mount to excessive moisture or extreme temperatures.

5.3 Storage

Store the telescope in a dry, dust-free environment. If possible, use the original packaging or a dedicated telescope case for protection during storage and transport. Ensure all components are clean and dry before storing.

6. Troubleshooting

• Problem: Telescope does not power on.
  Solution: Check power cable connections and ensure the power source is functional. Verify the DC power cable (item# 18769) is correctly inserted.
• Problem: Images appear blurry or out of focus.
  Solution: Adjust the focus knob slowly. Ensure the eyepiece and diagonal are fully inserted and secured. Allow the telescope to equalize to ambient temperature.
• Problem: GoTo function is inaccurate or tracking is poor.
  Solution: Re-perform the star alignment procedure carefully, ensuring accurate date, time, and location input. Verify the finderscope is properly aligned with the main telescope. Ensure the mount is level and balanced.
• Problem: Mount motors are noisy or struggling.
  Solution: Check that the optical tube is properly balanced with the counterweights. Excessive imbalance can strain the motors.
• Problem: Hand control display is blank or unresponsive.
  Solution: Check the cable connection to the mount. If the issue persists, try disconnecting and reconnecting the hand control.

7. Specifications

8. Warranty and Support

The Celestron Advanced VX 11" f/10 Schmidt-Cassegrain Telescope includes a 2-Year USA Warranty, covering defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

For further assistance, technical support, or to view additional resources, please visit the official Celestron website or contact their customer support department. Contact information can typically be found on the Celestron website or in the documentation included with your product.