Astrographe SQA106  F4.8 - ASKAR

High Star point performance

Quintuplet air-spaced lens design, including 2 pieces of SD glass. The central star point has an RMS radius of less than 1.7 µm, and the star point at the corner is less than 2.2 µm, showing a super-fine star point. It also has excellent full-field illumination and MTF data.

Petzval structure

Integrated self-flattened design, supporting a 44 mm full-frame image circle and giving very good results up to 55 mm image circle, no need for additional flatteners, and no need for additional calculation of the back focus. Between 40 mm and 70 mm connection distance, users can directly use it for shooting after the OTA is in focus.

Retractable dew shield

The dew shield is a retractable design that can be pulled out when used. It protects the lens from the impact of external and internal light and protects the lens itself.

Large rigid dual-speed focuser

Dual-speed rack-and-pinion large 2.8-inch rigid focuser, which can be compatible with most motorized focusers on the market. The focusing travel is 30 mm, and the focuser tube is engraved with high-precision scales. The entire focuser barrel is CNC machined with an anti-reflective internal design and matting paint, providing extra measures to eliminate stray light.

Rear-end adapters

The end of the SQA106 is equipped with a variety of adapters, all of which are toothed and ribbed, making it easy to rotate manually without slipping. The adapters are available in sizes M68, M54, and M48 and can be used to attach various accessories, such as full-frame cameras.

360° rotator

The rear of the focuser is equipped with a 360° high-precision rotator with a precision scale to allow the user to adjust and save the angle of rotation. It is also equipped with an enlarged locking screw for easy locking even under high loads.

Integrated tube ring

The tube ring features a hollow design in the middle to reduce overall weight.

Enlarged hand screws allow users to open and close the tube ring without additional tools.

There are 6 M4 and M6 threaded holes on both sides of the tube ring, which are convenient for installing the base or dovetail plate and connecting different accessories. You can even set up another set of OTA for shooting.

The handle on the top of the tube ring is slotted with a multifunctional finder base, which can be used to install astronomical accessories.

Finder bases

On both sides of the focuser, there are two finder bases, which not only eliminate the need for disassembling when changing the position of the finder scope but also provide additional mounting positions for other astronomical accessories.

Dovetail Plate

The standard Losmandy Style 300mm Dovetail plate is easy to dismantle and install

High-quality machining

The entire SQA106 tube is crafted using high-quality CNC machining with anodized and surface spray paint treatments. The top of the handle and the focuser are all designed with exclusive nameplates, demonstrating high-end quality.

BackFocus:

The focal point with Focuser full retracted is 87mm male from the beging of the Thread of the adaptor Ring (M68/M54/M48) and 48mm when it is full out

If you need more, for exemple to add a electric rotator, you can remove the manual rotator and you will have a M87x1 Thread. A ring adaptor need to be made for other kind o Thread but you can win the thickness of the rotator 

Feature

• Aperture 106 mm
• Focal length 509 mm
• Focal ratio f/4.8
• OTA Wheight: 5.82kg
• Objectif: Quintuplet Petzval APO with 2 SD Glass
• 5 elements Petzval design for field correction up to more than full frame format
• Connection threads
  87mm male (rotator removed)
  M68x1,
  M54x0.75
  M48x0.75 
  When removing the Rotator: M87x1
• Can be use with DSL/Camera FullFram and Medium format (55mm)
• 360° rotator for the camera
• Focuser: R&P with Dual speed for precise focusing
• Three finder bases