Takahashi BRC-250 Baker Ritchey-Chretien Flat Field

The Takahashi BRC-250 Baker Ritchey-Chretien Flat Field is designed with professionals in mind. Thanks to Takahashi's unique technique for polishing non-spherical surfaces, the company is able to mass-produce telescopes that utilize both the Ritchey-Chretien optical system and the Baker method to flatten the view over a wide field. This telescope employs non-spherical surfaces for both primary and secondary mirrors. By combining them with a pair of supplementary lenses, spherical aberrations, comas, and astigmatism are all eliminated with a flat field.

Features include a focal ratio of f/5 with a 100mm five-degree-diameter image circle, 250mm aperture, two-micron stellar image at the center of the field, and large 100mm diameter image. The BRC-250 makes a versatile astrograph, accommodating 35mm, 6x7, 6x9, and 4x5-inch formats. Perfect for CCD imaging, it is large enough to accommodate even the most massive commercially available CCD cameras. Backed by Takahashi's five-year optical and mechanical warranty, this telescope is ideal for viewing galaxies, nebulae, stars, the moon, planets, and more.