Celestron Adapter 1.25 to 2 inch with Twist Lock – converts barrel diameter, ideal for using eyepieces and filters on different telescopes, 50 g, aluminum.
Celestron Adapter – 1.25 to 2 inch with Twist Lock
The Celestron Adapter connects telescope eyepieces or accessories with different barrel diameters. It allows using 1.25-inch components on a 2-inch connection and vice versa.
Twist-lock mechanism provides secure grip without set screws – quick change between eyepieces, Barlow lenses or filters.
Precision-machined aluminum fits all standard telescope focusers.
Compatible with Celestron and most other brands – ideal to make existing accessories universally usable.
Lightweight (only 50 g) and compact – fits any accessories case and does not burden the tripod.
24 months manufacturer's warranty ensure long-term investment security for your telescope setup.
What sets the Celestron Adapter apart
The adapter combines the two most common barrel standards in telescope building: 1.25 and 2 inches. The twist lock secures the inserted part without set screws that could damage the eyepiece. It is especially suitable for frequent changes or for using heavy accessories that need a secure fit.
Ideal for...
Astronomy beginners who want to continue using their 1.25-inch eyepieces on a 2-inch telescope. Advanced users also benefit when switching between different eyepiece series or using special filters with different barrel sizes. The adapter is not intended for telescopes with non-standard connections – please check focuser and accessory diameter beforehand.
How to use the Celestron Adapter
Insert the adapter directly into the telescope's focuser (for a 2-inch focuser). Turn the twist ring counter-clockwise until the gripping jaws are open wide enough. Insert the 1.25-inch eyepiece or accessory and tighten the ring clockwise. For the reverse direction (2-inch accessory into 1.25-inch focuser), mount the adapter the other way around. Ensure a firm fit to prevent slipping or falling.
Celestron is a world-leading manufacturer of telescopes and astronomical accessories, founded in 1960. The brand offers products for beginners to professionals. Their adapters and eyepieces are known for precise manufacturing and compatibility with common standards.
The adapter connects telescope accessories with different barrel diameters: from 1.25 to 2 inches or vice versa. You can use eyepieces, Barlow lenses, and filters with a different mounting size on your telescope.
It fits any standard 2-inch focuser (to accept 1.25-inch accessories) and vice versa – into a 1.25-inch focuser for 2-inch accessories. Most entry-level and intermediate telescopes use these standards.
A rotating ring clamps the inserted accessory by friction. Unlike set screws, the clamping force is evenly distributed to avoid pressure marks. Simply turn the ring to open, insert the accessory, and tighten.
The adapter is made of aluminum, lightweight and corrosion-resistant. The clamping jaws are plastic to protect the eyepiece barrel.
Yes, Celestron offers 24 months manufacturer's warranty. It covers material and manufacturing defects, but not damage from improper use or wear.
Subscribe to the newsletter
New arrivals, promotions and exclusive offers — straight to your inbox.
Please complete your information below to login.
Sign In
Create New Account