Askar SQA85 85mm f/4.8 Quintuplet Petzval Astrograph
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Askar SQA85 85mm f/4.8 Quintuplet Petzval AstrographAskar SQA85 85mm f/4.8 Quintuplet Petzval AstrographAskar SQA85 85mm f/4.8 Quintuplet Petzval AstrographAskar SQA85 85mm f/4.8 Quintuplet Petzval Astrograph

Askar SQA85 85mm f/4.8 Quintuplet Petzval Astrograph

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About this product

Model:  askar_sqa85
Part Number:  SQA85

Askar SQA85 85mm f/4.8 Petzval Astrograph

INCOMING

The new Askar SQA85 is a high-quality quintuplet air-spaced Petzval astrograph with two pieces of SD glass for superior star point performance.

The central star point has an RMS radius of less than 1.6 um, and the star point at the corner is less than 2.5 um. It also has excellent full-field illumination and MTF data. 

 

 

 

Specifications

Aperture size

85mm

Focal length

408mm

Focal ratio

f/4.8

Objective lens

Quintuplet Petzval APO（including two pieces of SD glass)

Format specifications

Full-frame
Total length

Manual focus

Filter Diameter

M67

Total length

403mm(when dew shield retracted)
439mm(when dew shield extended)

OTA weight

3.64kg

Total weight (including handle & dovetail plate)

4.62kg
Rear-end thread typeM48/M54/M68 adapters

Rear-end connection distance

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

Standard package items

a SQA85 OTA in an Oxford cloth case

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