The Celestron Universal Barlow & T-Adapter is a versatile 1.25” accessory, serving as a three-in-one tool for both visual observing and astrophotography. It's an excellent addition to your astronomy gear, enhancing your viewing and imaging capabilities in several ways.

1. 2X Barlow Lens for Visual Use:

   • When used as a 2X Barlow lens, it doubles the magnification of any 1.25” eyepiece.
   • Maintains the eyepiece's original eye relief.
   • Suitable for enhancing your viewing experience during astronomical observations.

2. Prime Focus Photography:

   • The T-Adapter transforms your telescope into a large telephoto lens for prime focus photography.
   • To use, simply detach the Barlow section and insert the chrome barrel into the telescope’s 1.25” focuser or adapter.
   • The T-Adapter’s top end has T-threads to connect a T-Ring (sold separately), specific to your camera's brand.

3. Tele-Extended Photography:

   • Combining the Barlow with the T-Adapter allows for tele-extended photography.
   • This setup doubles the focal length and f/ratio of your telescope, enlarging the image on the sensor, ideal for capturing more detailed images of celestial objects.

Note on Compatibility:

• Focus Travel Limitation: Some telescopes, particularly fast refractors and Newtonians, may not have enough inward focus travel for prime focus photography. In such cases, using the Barlow with the T-Adapter helps the telescope reach focus.
• Ideal for Short Exposure Imaging: Both prime focus and tele-extended photography modes are excellent for capturing short exposure images of terrestrial and celestial objects, like the Moon.

The Celestron Universal Barlow & T-Adapter is a handy accessory for any astronomer looking to expand their visual and photographic capabilities, effectively turning a telescope into a powerful photographic tool.

Specifications