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Askar SQA85 Astrograph
Askar SQA85 AstrographAskar SQA85 AstrographAskar SQA85 Astrograph

Askar SQA85 Astrograph

Askar
AK-11046
New
In Stock

HK$ 14600


+ -
圖片僅作供參考，並不代表產品實物及所包括配件。
Pictures shown are for illustration purpose only and may not be an exact representation of the product and accessories included.
  • Description

Superior 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 1.6 µm, and the star point at the corner is less than 2.5 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 44mm full-frame image circle, no need for additional flatteners, and no need for additional calculation of the back focus. Users can directly use it for shooting between 40mm and 70mm connection distance 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.

Integrated Tube Ring

Integrated pair of tube ring sets, with 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 conve- nient 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 as-tronomical accessories.

Dovetail Plate

Standard Vixen-style 290mm dovetail plate, which is easy to dismantle and install.

Diversified Photography Scene Applications

In addition to connecting to the astronomical camera for astrophotography, the SQA85 can also be connected to a mirrorless camera or DSLR camera for shooting.

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 ro- tation. It is also equipped with an enlarged lock- ing screw for easy locking even under high loads.

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 fo- cusing travel is 32 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.

HIGH-QUALITY MACHINING

The entire SQA85 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.

REAR-END ADAPTERS

The end of the SQA85 is equipped with a variety of adapters, all of which are toothed and ribbed, making it easy to rotate manually without slipping. The adapt- ers are available in sizes M68, M54, and M48 and can be used to attach various accessories, such as full-frame cameras.

Specifications

Parameters

Aperture size

85mm

Focal length

408mm

Focal ratio

f/4.8

Objective lens

Quintuplet petzval APO（including two pieces of SD glass）

Total length

403mm(when the dew shield is contracted)
439mm(when the dew shield is stretched)

Format specifications

Full-frame

OTA weight

3.64kg

Gross weight（including tube ring and dovetail plate）

4.62kg

Rear-end thread type

M48/M54/M68 adapters

Rear-end connection distance

Support 40-70mm range (Recommended connection length is 55mm)

Standard package items

a SQA85 OTA, an Oxford cloth case

Product Size Diagram

The Locking Screw Position Diagram

SQA85 AFkit Electronic Focuser Assembly Diagram

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