Askar FRA400 C F/5.6 Quituplet

FRA400C Parameters

Aperture size

72mm

Focal length

400mm

Focal ratio

f/5.6

Objective lens

Quintuplet dual ED air-spaced APO

Format specifications

44mm

Aperture blades

17 pieces

Graded Aperture

f/5.6-f/22

Closest Focus Distance

5m

Focusing mode

Manual focus

Filter Diameter

M82

Total length

370mm (inclulding dew shield); 420mm (without dew shield)

OTA weight

2.68kg

Total weight (including handle & dovetail plate)

3.18kg

Rear-end adapter

M72/M54/M48(with M48×0.75 filter thread)

Rear-end connection distance

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

Standard package items

1.25inch/2inch adapter,a manual

Product Size Diagram

FRA400C AFkit Electronic Focuser Assembly Diagram

Optical Path Diagram

Spot Diagram

Longitudinal Aberration