Askar F/7 107/749 mm PHQ 107 Quadruplet Flatfield Super APO Astrograph

Askar 107PHQ Quadruplet Flatfield Super APO Astrograph Telescope

Discover the perfect blend of advanced design and high-quality performance with the Askar 107PHQ Quadruplet Flatfield Super APO Astrograph Telescope. Ideal for both novice astrophotographers and seasoned professionals, this optical tube offers unparalleled reliability and exceptional optical characteristics, making it a must-have tool in professional astrophotography.

Outstanding Optical Performance

At the heart of the Askar 107PHQ lies a sophisticated four-element apochromatic optics system with an air gap, designed to deliver unparalleled chromatic aberration correction. Featuring two low-dispersion (ED) glass lenses, it ensures superb color accuracy, while its minimal field curvature provides distortion-free images across the entire frame, eliminating the need for additional flatteners.

Versatile Use

Beyond its prowess in astrophotography, the Askar 107PHQ also excels in visual observations. Simply add an angular cap or use eyepieces with 1.25" or 2" diameters to explore the night sky visually.

Robust Mechanical Design

Built with precision, the Askar 107PHQ boasts high-quality mechanical components. Its sturdy focuser is designed to support the heaviest astronomical cameras, while CNC-machined mounting rings and a Vixen foot guarantee stability and ease of installation.

Key Features:

• High-class astrograph with two low-dispersion lenses for chromatic aberration elimination.
• Advanced optical design with perfect field curvature correction—no additional flattener needed.
• Four-element adapter for connection to various cameras or DSLRs.
• Full-frame illumination disc with a 44mm diameter.
• Robust hood ensuring linear stability under an 8 kg load.
• Suitable for both astrophotography and visual observations.

Technical Specifications:

• Optical design: Apochromatic refractor.
• Lens system: ED quadruplet with an air gap.
• Number of low dispersion lenses: Two.
• Front lens diameter (aperture): 107 mm.
• Focal length: 749 mm.
• Focal ratio: f/7.
• Diameter of full illumination circle: 44 mm.
• Compatibility with full-frame sensors: Yes.
• Camera/camcorder adapter: Four elements.
• Back focus for M48x0.75 adapter (from thread base): 79 mm.
• Back focus for M54x0.75 adapter (from thread base): 99 mm.
• Back focus for M68x1 adapter (from thread base): 119 mm.
• Back focus for M86x1 adapter (from thread base): 149 mm.
• Compatible eyepieces/angle attachments: 1.25", 2".
• Filter installation possibility: 2" using M52x0.75 - M48x0.75 adapter.
• Focuser diameter: 3.4".
• Maximum focus load: 8 kg.
• Focus adjustment range: 95 mm.
• Mounting: Vixen foot.
• Tube length with dew shield extended: 754 mm.
• Tube length with dew shield retracted: 603 mm.
• Tube weight (without accessories): 5.7 kg.
• Tube weight (with accessories): 6.9 kg.

Package Contents:

• Askar 107PHQ optical tube.
• Four-element M86 - M48 photographic adapter.
• Mounting clamps.
• Vixen 300 mm rail.
• Aluminum transport case.

Warranty:

Enjoy peace of mind with a 24-month manufacturer's warranty on the Askar 107PHQ.