Explore the Universe with the Askar 151PHQ Astrograph

• High-Performance Optics: Featuring a substantial 151mm aperture and a 1057mm focal length at f/7, the 151PHQ is the largest refractor in the Askar lineup, designed to elevate your astrophotography with unmatched clarity and detail.
• Advanced Lens Design: The 151PHQ boasts a quadruplet lens system including two ED glass elements, expertly reducing chromatic and other aberrations for pristine image quality.
• Integrated Flatfield Design: Eliminate the need for additional flatteners thanks to the built-in flatfield design, simplifying setup and enhancing the astrograph's ability to capture wide, distortion-free views of the night sky.
• Medium Frame Imaging: Supports a 60mm image circle with a central RMS radius under 2 microns, ideal for capturing fine details in celestial objects with minimal peripheral star distortion.
• Robust Mechanical Construction: Comes equipped with a durable, CNC machined tube and a high-quality paint finish, enhancing both the astrograph's durability and aesthetic appeal.
• Precision Focusing and Rotation: Includes a 3.4" rack and pinion (R&P) focuser with a 360° rotator, providing smooth and accurate focusing adjustments and rotation for optimal framing and focusing of celestial objects.
• Versatile Imaging Capabilities: Use the included 3" 0.7x flat field reducer to achieve a faster f/4.9 focal ratio and a 740mm focal length, reducing exposure times and broadening your astrophotography options.
• Convenient Mounting and Accessory Attachment: Features a standard 300mm Losmandy dovetail plate and sturdy double tube rings for secure mounting. The multifunctional handle includes a central slot for an M6 screw, enhancing the versatility for accessory attachments.
• Designed for Ease: The retractable telescopic lens hood and the enhanced tube ring design facilitate quick and easy setup, making it ideal for both beginners and seasoned astrophotographers.
• Elegant and Functional: The 151PHQ not only performs well but also looks great with attractive decorative elements and a professional finish, making it a standout addition to any astronomer's gear.

The Askar 151PHQ sets new standards for refractive astrographs, offering a perfect combination of high-end performance and user-friendly features for exploring the depths of the universe.

Specifications

Software and Docs

151PHQ User's Manual