High contrast and minimal colour aberrations are both highly desirable features in a modern telescope. Triplet lens designs incorporating exotic glasses present optical systems practically free of chromatic aberration (colour fringing) and capable of pin-point star images. An interferometer report with each individual telescope is provided. The included Field Flattener offers field correction to the edge of field, making it a desirable accessory for imaging.
The Opticstar/Ascension APO (apochromatic) refractors use a high quality made triplet lens objective made of premium Japanese ED (Extremely Low Dispersion) glass to achieve images of high contrast and virtually free of secondary colour. Fully (broadband) multicoated lenses ensure maximum light transmission.
Designed with wide field observing and imaging in mind these triplet apochromatic telescopes offer an array of features including a versatile mounting system, precision 2-speed (11:1) Rack & Pinion focuser and removable dew shield. A bracket is included for 50mm aperture finderscopes.
