Specification

Lens Type	6 Elements Petzval Design
Focal Length	178 mm
Diameter	51 mm
Aperture	f/3.5
Image circle	Illuminate up to 43.2 mm
Focuser	WIFD Focuser (Compatible with EAF)
Adapter Included	Tilt Adjuster / Rotator / M54 → M48 Adapter
Optional Flattener	No Flattener Required
T-rings Supported	Canon EF, RF \| Nikon F, Z \| Sony E \| Pentax K \| MFT (M4/3) \| FUJI X
Camera Format	Full Frame (Compatible) / APS-C (Recommend) / M43
Tube Length	210 mm
OTA Weight	1.67 kg / 3.68 lbs
Total Weight	2.29 kg / 5.05 lbs

Diagram Reports

Spot Diagram

Longitudinal Aberration

Size Diagram

Parts

Front Bahtinov Mask Cover

Lens Cover with Bahtinov Mask How to focus with the Bahtinov Mask ?

Dew Shield

WIFD Focuser How to adjust Focuser Tension?

Focus ruler scale Window

Two Speed 1:10 Ratio Fine Knob

Fine Knob Protecting Cover

M4 Screw Holes for Finder Bracket

Focuser Knob with Temperature Gauge ( Can be removed to attach EAF. How to Install EAF? )

Tilt Adapter How to adjust Tilt Adapter?

Tilt Adapter Protecting Cover

Camera Angle Rotator (CAA)

CAA Locking Knob

M54 → M48 Adapter (No M48 Filter Thread inside)

M48 Rear Dust Cap

Handle Bar with Mini Vixen-style Mounting Base

M6 Screw Holes

Mounting Base Locking Screws (M4)

M4 Screw Holes For Locking Screws

Mounting Ring

M4 Screw Holes for Finder Bracket

Mounting Ring Knob

210mm Dual side Dovetail Plate (Vixen-style & Arca Swiss Type)

Operation Guide

Focuser Tension Adjustment

There’s two side to build WIFD focuser tension:

BUTTON / Rack & Pinion Gear

Quick tension adjustment knob

Smoothness adjustment - Pull in (3mm Hex)

Smoothness adjustment - Push out (2mm Hex)

Can be removed to attach the electronic devices such as EAF (refer to Installing EAF) or be used as a spare.

Please Don’t Touch

TOP / Focuser Draw Tube

Focuser Draw Tube Tension Screws Please Don’t Touch

Guider/Finder bracket mounting screws (2.5mm Hex)

⚠️

The focuser smoothness adjustment ONLY when necessary by progressively push & pull screws until you reach the desired smoothness.

⚠️

When using the telescope with the motor, be sure not to over-tighten the tension screw, as this could damage the focuser. Consider it like driving a car while pressing both the gas and brake pedals simultaneously. Just as this could harm your car's systems, over-tightening the tension screw can compromise your telescope's focuser functionality.