Baader Planetarium 2" ETX Extension Ring for Celestron NexStar4, C90 and Meade ETX Telescope

SKU: AA2958500A MFR: NX4-SC
$48.00
Earn VIP Reward Points

Key Features

  • Optimize your telescope's focus with this 2" extension ring for clearer astronomy views.
  • Adapts Celestron NexStar 4 to standard 2" SC threads, enhancing your telescope's versatility.
  • Achieve precise focus with this ETX telescope accessory, featuring a 2.5mm optical tube length.
  • Enjoy a wider field of view with the 28mm clear aperture, improving your telescope's performance.
  • Lightweight at 0.12lbs, this Baader Planetarium ring won't add bulk to your telescope setup.
  • Connect various accessories using the T-2 thread, expanding your telescope's capabilities.
See More Product Details
Special Order?Estimated to Ship: 09/02/2025
Calculate Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

1 Year

$5.99

2 Year

$7.99

3 Year

$12.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Baader Planetarium Extension Ring Specifications

  • Optical Tube Length

    2.5mm (0.10")

  • Usage

    Changes NexStar 4 outer thread in the standard 2" SC-thread of all SC-telescopes

  • Inner Diameter / Clear Aperture

    28mm

  • Outer Diameter

    56mm

  • Inner Connection (lens Sided)

    Thread, M28,5, 1,4"(35mm)

  • Inner Connection (eyepiece Sided)

    Thread, T-2 (M42 x 0,75)

  • Outer Connection (eyepiece Sided)

    Thread, 2"

  • Compatibility

    Celestron NexStar4, C90 and Meade ETX Telescope

  • Weight

    0.056kg (0.12lbs)

About Baader Planetarium Extension Ring

You can enhance your stargazing experience with the durable 2" ETX Extension Ring, specifically designed for Celestron NexStar4, C90, and Meade ETX telescopes. This high-quality accessory is expertly crafted to convert the NX4 straight male thread into a 2" SCT male thread, expanding your telescope's compatibility with a wide range of 2" eyepieces and other accessories.

This sturdy and reliable extension ring is not just a simple adapter; it's a versatile tool that opens up a world of possibilities for your astronomical observations. Included with the extension ring is a 1.25" filter holder, adding to its functionality and versatility.

Whether you're an amateur astronomer or a seasoned professional, this extension ring is an essential addition to your telescope setup. It's designed to withstand the rigors of regular use, ensuring that you can explore the cosmos with confidence and precision.

Remember, the universe is vast and filled with wonders. With the 2" ETX Extension Ring for Celestron NexStar4, C90, and Meade ETX telescopes, you're one step closer to bringing those celestial bodies into clear, breathtaking view.

Baader Planetarium Extension Ring Features

  • Durable 2" ETX Extension Ring designed for Celestron NexStar4, C90, and Meade ETX telescopes
  • Converts NX4 straight male thread into a 2" SCT male thread for expanded accessory compatibility
  • High-quality construction ensures reliable performance and longevity
  • Versatile tool that enhances your astronomical observations
  • Includes a 1.25" filter holder for added functionality
  • Essential accessory for both amateur astronomers and seasoned professionals

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Key Features

  • Optimize your telescope's focus with this 2" extension ring for clearer astronomy views.
  • Adapts Celestron NexStar 4 to standard 2" SC threads, enhancing your telescope's versatility.
  • Achieve precise focus with this ETX telescope accessory, featuring a 2.5mm optical tube length.
  • Enjoy a wider field of view with the 28mm clear aperture, improving your telescope's performance.
  • Lightweight at 0.12lbs, this Baader Planetarium ring won't add bulk to your telescope setup.
  • Connect various accessories using the T-2 thread, expanding your telescope's capabilities.