Antares Variable Extension Eyepiece Projection Adapter (1.25")

Antares Variable Extension Eyepiece Projection Adapter (1.25")

Due to high demand and global product shortages due to the pandemic, please call for availability.

Use a variable extension eyepiece projection adapter anytime greater magnification is required for astrophotography. Ideal for shooting the Moon or planets.

Simply insert an eyepiece into the adapter, and screw on a T2 ring adapter (sold separately). Adapter accepts eyepieces 38mm outside diameter or less. May require an extension tube for long eyepieces.

The built-in telescopic extension makes it possible to use long eyepiece designs which tend to stick out of fixed-length projection adapters. Increasing the extension length also increases the projection power, while reducing the image brightness.

The 1.25" nosepiece detaches and is threaded to accept a T2 ring, so it can be used as a prime-focus adapter as well. Some Newtonian reflectors may require a 2x Barlow to reach focus when used in this fashion.


  • 1.25" removable nosepiece with M42 thread
  • Accepts M42 threaded T-rings and accessories
  • Black anodized aluminum
  • Inside diameter: 37mm (1.4") (max. eyepiece diameter)
  • Length: 122mm to 152mm (overall)
  • Weight: 199g (7oz)

Browse our website for T2 ring adapters for the various cameras.