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