ASKAR SQA85 f/4.8 APO QUINTUPLET

The Askar SQA85 is an apochromatic quintuplet flat-field astrograph that offers high performance thanks to its air-spaced SD lens design. The self-flatted Petzval lens design supports a 44mm image circle with a central RMS star size of only 1.6μm. Stars at the corners of a full frame sensor are tiny at just 2.5μm.

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. Recommended sensor distance to the rear adapters is between 40 - 70mm.

Unlike the smaller SQA55, the SQA85 has a traditional 2.8" dual-speed rack & pinion focuser which is compatible with most motorized focusers on the market, such as the ZWO EAF or 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 stray light is kept to a minimum. 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 allow you to connect a variety of accessories such as guiders and control units. The 290mm Vixen-style dovetail plate gives you plenty of room to balance the scope with typical imaging trains.

The SQA85 comes with M68, M54 and M48 camera-side adapters for easy connection to typical imaging trains. A durable water resistant resin case with EVA foam interior keeps the telescope safe and has plenty of space for additional accessories.

Specifications

 Items included

• SQA85 OTA
  
• Padded soft case
  
• 290mm Vixen bar
  
• M68 x 1, M54 x 0.75 & M48 x 0.75 camera adapters
• Manual
  

Downloads

Instruction manual

Gallery