Description The Takahashi Mewlon Series of Dall-Kirkham Telescopes by Takahashi combines refractor-like performance in a larger folded optic reflector design. The Mewlon series comes in three objective diameters: 210 mm, 250 mm and 300 mm. This revolutionary design has set the standard in folded optic systems. The precision optical surfaces of the Mewlon series is at least λ/20. This results a highly concentrated airy disc, resulting in pin point star images and high contrast fields. The primary mirror is installed in a specially designed mirror cell that is designed to reduce astigmatism. Specifications Telescope µ-210 Part Number TLK21000 Aperture 210 mm Resolution 0.55" Limiting Magnitude 13.4 Light Gathering Power 900X Focal Length 2415 mm Focal Ratio f/11.5 Optical Type Dall-Kirkham Cassegrain Tube Diameter 244mm Tube Length (With Lens hood retracted) 700mm Tube Weight 8.1kg Recommended Finder 7x50 Metal Back Distance 462.0mm Telescope Specifications