Tele Vue Optics Tunable Top with 1¼” Adapter:

Precision Coma Correction for Paracorr Type-2

Enhanced Coma Correction: Designed to position all eyepieces for optimal coma correction, enhancing your viewing experience.
Versatile Compatibility: This 2" Tunable Top with 1¼” Adapter (model #ATT-2125) is compatible with the standard Tele Vue 2” Paracorr Type-2.
BIG Paracorr Type-2 Adaptability: For use with the BIG Paracorr Type-2, the “VISA” (Visual / Imaging System Adapter) is required.
No Need for 3” Tunable Top: Due to secondary mirror size limitations, a 3” Tunable Top is not necessary, maintaining a manageable setup.
Ideal for f/3 Telescopes: Best suited for f/3 telescopes (effectively f/3.45 with Paracorr), particularly with Tele Vue’s 21mm Ethos eyepiece for a 6.1mm exit pupil at f/3.45.
Perfect for Wide Field Eyepieces: Maximizes the performance of wide field eyepieces, making it a great addition for serious astronomers and astrophotographers.