TAKAHASHI TOE 52° EYEPIECE 2.5mm photography The PE grade series is

The PE grade series is designed for professional research studies and applications in which precision homogeneity and on-band transmittance values across the substrate surface are required

4 mm Focal length 1370 mm Focal ratio f/9 Linear obstruction 76 mm Corrected field 32 mm Backfocus distance 159 mm with standard focuser

Spot diagram of Takahashi Epsilon 180ED with 1

The width of bandpass of the 3 RGB filters is balanced with the spectral response of the most common CCD and CMOS cameras

TAKAHASHI TOE 52° EYEPIECE 2.5mm photography The PE grade series isThe Takahashi TOE 2. 5mm eyepiece provides a 52 degree undistorted flat field, with the highest possible sharpness and control of aberrations. Whether used on Takahashi telescopes or other high end instruments, the TOE eyepieces provide performance closest to the diffraction limit. Takahashi TOE eyepieces were specifically designed for high magnification observation of the Moon and planets, with 10mm of eye relief for optimal comfort. Takahashi