Askar 107PHQ apochromatic bezel

107PHQ - A high-performance astrograph

The 107PHQ is Askar's first long focal ratio Flatfield astrograph. Designed to simplify astrophotography, it is equally suited to beginners and experienced enthusiasts. This instrument offers a practical and elegant design, without the need for additional field correctors to obtain perfect images.

It's an exceptional bezel that's systematically combined with some of the most beautiful photos you'll find on the internet:

Versatile Design Built for Excellence

Askar's 107PHQ is designed to adapt to all observation and astronomical photography situations. This f/7 model features four lenses, two of which are ED glass, for optimum reduction of chromatic aberration. It guarantees exceptional color correction even at magnifications of up to 300x for visual observation.

The integrated Flatfield lens is a major asset, enabling the 107PHQ to produce full-frame 44mm images with a flat field. Thanks to a central RMS radius of just 3μm, even the most demanding users will be satisfied by the sharpness of the stars, without distortion or vignetting, even in the corners.

Easy to use - No Field Corrector Required

The 107PHQ frees you from complex back-focus calculations and tedious connection steps. You can equip it with any imaging device, focus it, and get sharp images, without the need for additional accessories. This makes it the perfect choice for beginners and advanced astrophotographers alike.

Amazing Performance in Imaging and Observation

With an aperture of 107 mm and a focal length of 749 mm, the 107PHQ is capable of capturing the finest details of your targets, from small stars to planets. In imaging mode, it is compatible with various accessories, offering focusing distances of :

• 79 mm (from base of M48x0.75 thread)
• 99 mm (from base of M54x0.75 thread)
• 119 mm (from base of M68x1 thread)
• 149 mm (from base of M86x1 thread)

In observation mode, the focus is 120 mm from the end of the 2” visual back.

Dimensions and weights

• Total length: 603 mm (with contracted fog shield) to 754 mm (with extended fog shield)
• OTA weight: 5.7 kg
• Total weight (including tube rings and dovetail): 6.9 kg

Technical specifications

• Opening: 107 mm
• Focal length: 749 mm
• Design: Quadruplet air APO, optimized for astrophotography
• Imaging medium: Full frame (44 mm), flat field
• Central RMS radius: 3 μm
• Focuser: 3.4” rack with 1:10 fine adjustment, load-bearing capacity up to 8 kg
• Adapters included: Various rear thread adapters
  • M86x1 to M68x1
  • M68x1 to M54x0.75
  • M54x0.75 to M52x0.75
  • M52x0.75 to M48x0.75 with filter thread M48x0.75
• Additional accessories: Optional 0.7x reducer

Pack contents

• Optical tube 107PHQ (OTA)
• Pair of tube rings
• Multifunctional handle
• 300 mm Vixen dovetail
• Set of four M86-M48 photographic adapters
• Retractable mist guard
• High-quality aluminum case
• User's manual

Key benefits

• Quadruplet APO design optimized for astrophotography
• Full-frame support with flat field
• Exceptional vignetting control
• No back-focus calculation required
• No need for an additional field corrector

Why choose Askar's 107PHQ?

Askar's 107PHQ is designed for amateurs and experts alike, offering a simple, hassle-free astrophotography experience. Whether you're interested in visual observation or high-resolution image capture, this astrograph will meet your expectations with outstanding image quality, ease of use and versatility.