ASKAR SQA70 f/4.8 APO QUINTUPLET FREE GUIDE

For a limited time, customers who purchase the SQA70 will receive a free 52 Super ED guide scope. Valued at $499! 

The Askar SQA70 is an apochromatic quintuplet flat-field astrograph that offers high performance thanks to its air-spaced 2 pieces of ED lens design. The SQA70 is a Petzval lens structure, due to the self-flattened design, the support back focus has a wide range between 37 to 68 mm. 

With a 44 mm full frame image circle support, a central star point RMS radius of less than 1.84 µm, and a full-field illumination of over 90% at 44 mm image circle, it ensures superb image quality. MTF data reveals excellent performance, with a super-fine star point of less than 2.4 µm at full frame sensor corners.

Thanks to its Petzval design, you don't need to worry about reaching a precise backfocus distance. As long as you're in focus, you're good to go. 

The SQA70 has a 2.5" dual-speed rack & pinion focuser which is compatible with most motorized focusers on the market, such as the ZWO EAF, the Touptek AAF or the QHY Q-Focuser. Like the rest of the tube, the entire focuser barrel is CNC-machined for strength and rigidity. Anti-reflective matte paint ensures that the stray light is kept to a minimum.

The SQA70 include M42, M48 (with M48×0.75 filter thread) and M54 adapters for an easy connection to most off axis guiders, filter wheels and cameras. The rear high-precision 360 degree rotator is engraved with a micrometric scale, making repeatable framing for astronomical targets straightforward.

Two finder brackets on the focuser as well as a finder saddle on the top of the rings allows you to connect a variety of accessories such as guiders and control units. The 290 mm Vixen style dovetail plate gives you plenty of room to balance the scope with most imaging trains.

A durable water resistant resin case with EVA foam interior keeps the telescope safe and offers plenty of space for additional accessories.

Optical Performance

Specifications

 Items included

• SQA70 OTA
  
• Padded soft case
  
• Tube rings and 290 mm Vixen style dovetail plate
  
• M76 x 1, M54 x 0.75, M48 x 0.75 and M42 adapters
• Manual
  

Downloads

Instruction manual

Gallery

 Yinjie Zheng | IC 1805 Heart Nebula | ASKAR SQA70 + ZWO ASI 2600MC