Aperture and Focal Length: Features an 85mm aperture with a 408mm focal length, delivering a fast f/4.8 focal ratio ideal for wide-field astrophotography.
Optical Design: Incorporates a quintuplet Petzval design with two SD (Super ED) glass elements, ensuring exceptional color correction and sharpness across the entire field.
Full-Frame Compatibility: Designed to support full-frame sensors, providing a large image circle suitable for advanced imaging setups.
Compact and Lightweight: Measuring 403mm in length (dew shield retracted) and weighing 3.64kg, it's portable and convenient for field use.
Versatile Connectivity: Equipped with M48, M54, and M68 adapters, accommodating various camera and accessory attachments.
Optimal Back Focus: Supports a back focus range of 40-70mm, with a recommended connection length of 55mm for optimal performance.
Included Accessories: Comes with an Oxford cloth case for protection and easy transport.
The Askar SQA85 is a premium astrograph designed for astrophotographers seeking high-quality imaging performance in a compact and versatile package.
Specifications
SQA85 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
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