Askar SQA130 – Five-element Petzval Astrograph 130mm f/4.8 for full-frame sensors and medium format.
The Askar SQA130 is a high-tech astrograph with outstanding optical and mechanical performance, designed for advanced and professional astrophotography. Based on a five-element Petzval optical design, with two SD (Super ED) glass elements, it ensures perfect star pinpointing and high-contrast images over a completely flat field up to 55 mm.
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Aperture: 130 mm
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Focal length: 624 mm (f/4.8)
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High-performance optics: Features a five-element Petzval design with 2 SD glass elements, eliminating chromatic aberrations and field curvature.
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Image circle: 55 mm for full-frame sensor coverage.
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Spot diagram: RMS radius <2 µm at the center, <2.4 µm at the edges.
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MTF: Greater than 0.9 at low frequencies.
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Lighting: >95% at 44mm and >85% at 55mm.
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Professional mechanical structure: Gear-driven focuser and dual-speed 3.2" pinion with a 30 mm travel.
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Rotational mechanism: 360° with graduated scale.
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Weight: 9.18 kg OTA, 11.76 kg complete.
Included accessories: Multi-function ring handles, 300mm Losmandy mount base, dual finderscope mount, adjustable rear focus 46–76 mm.
Package contents: Askar SQA130 astrograph (OTA), pair of CNC handle rings, 300mm Losmandy Dovetail plate, hard Oxford fabric case, rear adapters M48, M54, M68.
