We will be closed for Rosh Hashanah on TUE & WED. Online orders placed Mon 9/22 after 4PM EST - Wed 9/24 will ship Thu 9/25.
Baader Planetarium Baader M68 Extension Tube, 40mm Long
See all Baader Planetarium items

Baader Planetarium M68 Extension Tube, 40mm Long

SKU: AA2458204 MFR: M68/40
Be the first to review this item16 questions, 37 answers
$102.00
Earn VIP Reward Points

Key Features

  • Achieve optimal focus with this 40mm Baader Planetarium extension tube for M68 threads.
  • Fine-tune your telescope's back focus using this essential eyepiece accessory.
  • Provides precise spacing, enhancing image quality with your astronomy telescope setup.
  • Maximize magnification power with secure and stable M68 threaded connections.
  • Perfect for astrophotography, ensuring correct sensor placement for crisp images.
  • Durable build ensures long-lasting performance for all your telescope accessories.
See More Product Details
Special Order?Estimated to Ship: 10/05/2025
Calculate Shipping

See Options

1
Add to ListGet Sale Alert

Add Adorama Protect:

Available to U.S. customers only.
1-Year Adorama Protect$10.99
2-Year Adorama Protect$17.99
3-Year Adorama Protect$26.99

Need help? Ask our experts.

Overview
Compare
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 where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, 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!

Malfunction Protection

Malfunction 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 purchase Internationally or in U.S. Territories.

Browse our FAQ

See Terms & Conditions

About Baader Planetarium M68

Part of the Tele-Compendium astrophotography system, this extension tuble enables focal length to be set for optimal imaging rig viewing. Can by used on its own, or stacked with other sizes of extension tubes, whether using it for classic eyepiece projection or with their Fluoride Flatfield Convertor. The inside of the tube is blackened so stray light is blocked, helping to maintain maximum contrast.

Warranty Information

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

Join VIP PRO

2 Day Delivery on thousands of items!

Sell or Trade your Gear

Get started in 3 easy steps

Key Features

  • Achieve optimal focus with this 40mm Baader Planetarium extension tube for M68 threads.
  • Fine-tune your telescope's back focus using this essential eyepiece accessory.
  • Provides precise spacing, enhancing image quality with your astronomy telescope setup.
  • Maximize magnification power with secure and stable M68 threaded connections.
  • Perfect for astrophotography, ensuring correct sensor placement for crisp images.
  • Durable build ensures long-lasting performance for all your telescope accessories.