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

The Askar 107PHQ is an ideal astrograph for both beginner astrophotographers and experienced users seeking a reliable optical tube. Its impressive optical characteristics make it a valuable tool in the field of professional astrophotography.

At the core of this telescope lies a four-element apochromatic optics system with an air gap. To ensure the best possible correction of chromatic aberrations, Askar designers have incorporated a solution found in high-end apochromats. They utilized two lenses made of glass with reduced dispersion (ED), resulting in excellent color reproduction. Furthermore, the Askar 107PHQ boasts minimal field curvature, allowing for distortion-free images on the edge of the frame even without the use of an additional flattener.

However, the capabilities of this telescope extend beyond astrophotography. With the addition of the angular cap or eyepieces with 1.25" and 2" diameters, the Askar 107PHQ enables visual observations as well.

In addition to its impeccable optical performance, the Askar 107PHQ stands out for its high-quality and precise mechanical components. The sturdy focuser accommodates even the heaviest astronomical cameras, while the CNC-machined mounting rings and Vixen foot ensure the stability of the tube.

Key Features of the Askar 107PHQ Telescope:

• High-class astrograph featuring two low-dispersion lenses for eliminating chromatic aberrations.
• Advanced optical design with perfect field curvature correction, eliminating the need for an additional flattener.
• Four-element adapter enabling connection to various cameras or DSLRs.
• Full-frame illumination disc with a diameter of 44mm.
• Robust hood providing linear stability even with 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:

The Askar 107PHQ comes with a 24-month manufacturer's warranty.