Askar Apochromatic Refractor AP 60/276 SQA60 Pro

Petzval-style optical design with integrated corrector
Compact high-end astrograph
M48 camera connection thread
Internal M48 thread for 2" filters
82 mm thread for objective filters



The SQA60pro is an astrograph featuring a 60 mm aperture, a 276 mm focal length, and an f/4.6 focal ratio. It delivers outstanding star images and excellent illumination across the entire field of view.

The SQA60pro utilizes an air-spaced, six-element optical design that includes two SD glass elements and supports full-frame sensors. This Petzval-style design eliminates the need for complex back-focus calculations: once the OTA is focused, imaging can begin immediately within a connection distance range of 41 mm to 66 mm. Additionally, no separate field flattener is required.

The SQA60pro features a permanently integrated dew shield that reliably protects the optics from stray light.

At the front, the SQA60pro includes an integrated 82 mm filter thread compatible with most standard photographic filters, allowing users to employ various filters based on their imaging needs. At the rear of the OTA, there is an M48 adapter with an integrated 2" filter thread, enabling the use of screw-in 2" filters.

The tube rings feature a multifunctional finder shoe on the top handle for attaching various accessories. The base of the rings is equipped with a standard 290 mm Vixen-style dovetail bar, allowing for tool-free mounting on most telescope mounts.

The SQA60pro is equipped with a high-precision rack-and-pinion focuser featuring dual-speed reduction, ...and a rotation adapter. It is compatible with most electronic focusers. The travel range is 25 millimeters.

Finder shoes are located on both sides of the focuser, allowing its position to be changed or additional accessories to be mounted without dismantling the focuser.

The SQA60 Pro tube is fully CNC-machined, finely anodized, and features a matte anti-reflective coating. This underscores the instrument's high-quality craftsmanship and premium nature.

Technical Specifications
Optics
Type
Refractor
Design
Apochromat
Aperture (mm)
60
Focal length (mm)
276
Aperture ratio (f/)
4.6
Resolution (arcseconds)
2.30
Limiting magnitude (mag)
10.7
Light-gathering capacity (relative to 7mm pupil)
70
Max. useful magnification (x)
120
Lens design
Sextuplet
Tube weight (kg)
3.54
Tube length (mm)
283
Corrected image field (mm)
44
Focuser
Design
Rack and Pinion
Connection (eyepiece side) (inches)
2
Connection thread (camera side)
M48
Back focus (mm)
55
Motorized
No
Reduction gear
Yes
Travel range (mm)
25
Tilt flange
No
Rotatable
Yes
Filter thread
Yes
Mounting
Design
OTA
Mount type
No mount included
Included Accessories
Dew shield
Yes
Diagonal/Mirror
No
Corrector
Integrated
Dovetail bar
Vixen-style
Carrying handle
Yes
Transport case
Yes
Finder shoe
Yes
Tube rings
Yes
Camera adapter
Yes
Fields of application
Astrophotography
Yes (very good)
Moon & planets
Yes
Nature observation
No
Nebulae & galaxies
Yes
Sun
No (only with suitable solar filter)