Lunette apochromatique Askar 203 APO

Introducing the Askar 203APO bezel

Discover the Askar 203APO refractor, an exceptional instrument for demanding astronomers. Equipped with a 203 mm APO triplet objective with low-dispersion ED glass, it effectively corrects chromatic aberrations to deliver images of remarkable clarity. With a focal length of 1421 mm and a native focal ratio of f/7, it guarantees images rich in detail and contrast, ideal for capturing celestial objects with unrivalled precision.

Optics and Performance

• Opening : 203 mm (8 inches)
• Focal length : 1421 mm (f/7)
• Objective: Triplet APO with ED glass to reduce chromatic aberration
• Optical advantage : Captures 20 % more light than model 185APO, with a limiting magnitude of 13.3

Design and Engineering

• Optical tube : Machined with an elegant finish, combining orange accents on an ivory background
• Retractable design : Reduces overall length to 1145 mm for easy transport, with rudder-type locking ring for simple, secure adjustment
• Eyepiece holder : Large, rigid 3.5-inch double-speed rack-and-pinion eyepiece holder with 360° rotator and oversized locking screws
• Focusing scale : High-precision engraving over a range of 100 mm, combined with anti-reflective internal design and matt paint to eliminate stray light

Accessories and Connectivity

• Two finder bases, one on each side of the eyepiece holder, for attaching various accessories without disassembly
• Interface supplied with 1.25"/2" adapter for eyepieces and diagonals, compatible with binoviewers
• Mounted on a standard 500 mm Losmandy dovetail, with multiple holes for easy adjustment to the equatorial mount

Technical specifications

• Opening : 203 mm
• Focal length : 1421 mm (f/7)
• Eyepiece holder : 3.5-inch double speed with 360° rotator
• Retractable design : Total length 1145 mm
• Weight : Net weight: 14.9 kg; total weight (including tube, collar and dovetail): 23.5 kg
• Optical advantage : 20 % more light than model 185APO, limiting magnitude 13.3
• Connectivity : 1.25"/2" adapter for eyepieces and diagonals

Accessories Included

• Unique name ring for easy identification
• Retractable spray shield locked by large screws
• Reinforced triplet tube clamp with knurled screws for quick opening and locking
• 402 mm handle with special groove, can accommodate a researcher for additional observations
• 500 mm Losmandy dovetail

Conclusion

The Askar 203APO is the ultimate choice for demanding astrophotographers and observers. Thanks to its large aperture, high-precision optical design and comprehensive accessories, it offers outstanding image quality and a smooth, stable observing experience. With optimized performance and ingenious design, it's ready to accompany you on your detailed exploration of the night sky.