Specification
Lens Type | 6 Elements Petzval Design |
Focal Length | 178 mm |
Diameter | 51 mm |
Focal Ratio | 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
Learn how to read Diagram Reports
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? )
- Sensor Tilt Adjuster How to adjust Tilt Adapter?
- Tilt Adjuster 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.
Sensor Tilt Adjustment
- Locate the pair of diagonally opposing screws corresponding to the affected corners.
Where is the tilt adjuster?
1. Remove the rotator knob.
2. Remove the ring cover.
3. The tilt adapter is inside.
- Use the 2mm hex key to loosen the pull-in screw of the screw group closest to side where stars appear too close, and loosen the push-out screws of the group on the opposite side (too far).
- Adjust the push-out screws in the "too close" group and the pull-in screw in the "too far" group until the tilt is corrected.
- Gently snug all screws to hold the final position.
Note
- Make small adjustments at a time—1/8 turn is recommended for fine control.
- Adjust other screws if necessary to maintain overall balance.
- If the tilt becomes worse or is severely misaligned, perform a reset:
1. Loosen all push-out screws
2. Tighten all pull-in screws fully
3. Back out each pull-in screw by the same number of turns
4. Begin tilt adjustment again from this neutral position
Installing EAF
- Turn the telescope over and remove the Tension screw.
- Remove the top cover screw near the temperature gauge with 2mm Allen key.
- Release (don’t remove) two inner knob screws.
- Remove the temperature gauge knob.
- Find the flat side on the shaft and turn it to face the hole.
- Put the 5-6mm Flexible coupling on the shaft and lock the two inner screws.
- Put the EAF body on and lock the two inner screws.
On Step 6 & 7:
Please make sure one of the screws is lock on the flat side
- Align the screw holes.
- Lock the four M4 bracket screws.
