TOA-130NS Triplet APO Double ED Refractor - 2.7" Focuser

The Takahashi TOA-130NS is the first of Takahashi's newest optical design: the Ortho-Apochromat, employing a newly designed triplet using special elements to produce the highest order of color correction. With 1/12th wave accuracy and an airy-disc Strehl ratio of 0.992, the optics are as near to perfection as you can get. The 2.7" focuser produces a usable 40mm diameter image circle for virtually unvignetted 35mm prime focus photography with a large thumbscrew that locks the focuser tube in place without image shift. The TOA-130 is perfect for visual, CCD and classic astrophotography.