The powerful apochromatic refractor Askar was developed specifically for astrophotography. Here is some data:

- Fixed focal length: 408mm
- Opening: 85mm
- Fixed aperture: f/4.8
- 2 SD glasses for perfect color correction
- Petzval design for field correction up to full format
- Connection thread on the camera side is M48, M54 and M68 included in delivery
- Suitable for DSLR, mirrorless system cameras and astro cameras
- The camera can be rotated thanks to the manual rotator
 
Connecting the camera to the SQA85:
Camera side and adapter included for M48x0.75, M54x0.75 and M68x1. The working distance is flexible 40-70mm (55mm recommended), from the camera connection thread. This means that all common photo adapters fit the lens and the camera is automatically at the right distance, regardless of whether you want to adapt a DSLR, mirrorless system camera or astro camera. There is enough scope for e.g. an off-axis guider, rotator, filter wheel, etc.

Focal length: 408mm
Light intensity: f/4.8
Opening: 85mm 
Focusing: manual focus R&P with reduction
Camera connection: M48x0.75, M54x0.75, M68x1
Working distance: 40-70mm (55mm recommended)
Optical system: Petzval system with built-in field leveling
APO lenses: 2xSD element for perfect color correction
Suitable for: Cameras with sensors up to full format