Askar

SQA55

Askar SQA55 55mm f/4.8 Petzval Astrograph

£795.00

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Quantity

Generally In Stock, Please Confirm Before Ordering

Askar SQA55mm f/4.8 Telescope – Quintuplet Air-Spaced SD Glass Petzval Astrograph.

The Askar SQA55mm f/4.8 telescope is designed as a quintuplet air-spaced SD glass Petzval astrograph, making it perfect for both astrophotography and daytime photography enthusiasts. Its advanced optical system ensures stunning image quality, whether you're capturing the stars or landscapes.

High-Quality Optics: Quintuplet Design with SD and ED Glass Elements

This telescope features a quintuplet optical system that incorporates one SD glass element and one ED glass element. These elements work together to deliver a flat field with exceptional colour correction, resulting in sharp, accurate images across the frame.

Precise Star PSF and Flat Field Imaging

With an on-axis star PSF (Point Spread Function) of 2.5μm and 4μm in the corners, the Askar SQA55mm ensures pinpoint stars and high-resolution images. The flat field design eliminates the need for a field flattener, allowing you to capture stunning astrophotography images without distortion.

No Need for Back Focus Calculation

Thanks to the Petzval lens structure, there's no need for complicated back focus calculations. Simply position your camera sensor between 50mm and 60mm from the rear M48 connection thread to achieve optimal performance for full-frame cameras.

Compact and Versatile Lens Hood with Reversible Design

The Askar SQA55mm comes equipped with a convenient lens hood that easily attaches to the lens barrel. When not in use, it can be reversed for compact storage, reducing the overall size of the telescope for easier transportation.

Perfect for Astrophotography and Daytime Photography

Whether you're capturing stunning night skies or beautiful daytime landscapes, the Askar SQA55mm f/4.8 telescope offers unparalleled performance. Its advanced design and optical quality make it a versatile choice for photographers of all kinds.




Product introduction





Specifications

SQA55 Parameters

Aperture size

55mm

Focal length

264mm

Focal ratio

f/4.8

Objective lens

Quintuplet petzval APO(One piece of SD glass, one piece of ED glass)

Format specifications

44mm

Aperture blades

14 pieces

Graded Aperture

f/4.8-f/22

Closest Focus Distance

5m

Focusing mode

Manual focus

Filter Diameter

M67

Total length

316mm (inclulding dew shield); 244mm (without dew shield)

OTA weight

1.84kg

Total weight (including handle & dovetail plate)

2.18kg

Rear-end adapter

M48*0.75 (with M48×0.75 filter thread)

Rear-end connection distance

Support 50-60mm range (Recommended connection length is 55mm)

Standard package items

a SQA55 OTA, a military-grade waterproof hand-carrying case

 

Product Size Diagram

SQA55 AFkit Electronic Focuser Assembly Diagram

Video

Promotional Video·Deep Space Astronomy

 

Promotional Video·Landscape Photography

Images

Mr.ZhuLiQun  |  NGC7000  |  ASKAR SQA55 + ZWO ASI 6200

sandwall & ARK  |  M20+M8  |  ASKAR SQA55 + ZWO ASI 2600MC Pro

Drew Evans  |  THE GREAT RHO OPHIUCHI CLOUD COMPLEX  |  ASKAR SQA55 + ZWO ASI2600MC DUO · ZWO ASI2600MM Pro

TianXingZhe  |  NGC6888  |  ASKAR SQA55 + ZWO ASI2600MC

sandwall  |  Veil Nebula  |  ASKAR SQA55 + ZWO ASI 2600MC Pro

Askar SQA55 55mm f/4.8 Petzval Astrograph

£795.00