Askar SQA70 f/4.8 70/336 mm is a professional astrograph dedicated to work with full-frame cameras and cameras.

The optical system of this astrograph consists of five lenses, two of which are made of low-dispersion glass (ED). This design not only provides excellent resolution and image detail, but also excellent color reproduction thanks to effective correction of chromatic aberrations. The applied optical design allows work in a wide range of working distance, which, combined with a double system of coarse and fine focusing, significantly facilitates the operation of the lens.

The very good optical properties are accompanied by the quality of workmanship. Both the body and the sunshade are made of metal. Thanks to this, the construction of this telescope is not only solid, but also allows for secure and stable attachment to a tripod or mount using the included foot.

Key Features of the Askar SQA70 f/4.8 70/336mm Optical Tube

• apochromatic astrophotography lens with excellent field curvature correction
• two low-dispersion glass lenses that eliminate chromatic aberrations
• additional knob for precise focusing
• integrated accessory foot
• solid metal construction

Technical parameters

• optical design: apochromatic quintuplet in the Petzval system
• number of low dispersion glass lenses: 2 ED lenses
• focal length: 336 mm
• Front lens diameter: 85 mm
• aperture: f/4.8
• extension: rack & pinion 2.5"
• focusing: manual with coarse and fine adjustment
• focus adjustment range: 32 mm
• back focus (recommended): 55 mm
• working distance range: 37 - 68 mm
• diameter of the full illumination disc: 44 mm
• matrix format: full frame
• camera/camcorder mount: M42/M48/M54 adapters
• rotator: 360°
• body material: metal
• body finish: silver-gray
• length with extended sun visor: 372 mm
• length with folded sun visor: 332 mm
• weight with accessories: 3.5 kg

Set components

• Askar SQA70 f/4.8 70/336 mm optical tube
• mounting clamps
• Vixen footer
• M54, M48, M42 adapters
• cover
• documentation

Guarantee

24 months