SKU: T-C-MINI-RD

MiniCat 51 WIFD

Name: MiniCat 51 WIFD
Brand: William Optics
SKU: T-C-MINI-RD
Price: 898.00 USD
Availability: OutOfStock

$898.00 USD

The MiniCat 51 is designed for photography enthusiasts who love wide-angle views. Its standout feature is an ultra-bright f/3.5 aperture, allowing you to capture faint nebulae or comets in a very short time. (The f/3.5 aperture lets in twice as much light as an f/5 aperture.)

The MiniCat uses the latest Petzval design with 6 lens elements, including 2 Super ED and lanthanum lenses to perfectly control chromatic aberration. It’s currently the only high-quality, short focal length 178mm f/3.5 astrograph telescope available on the market.

The MiniCat holds three unique patents, ensuring easy and perfect focusing along with coaxial image quality to prevent drawtube tilt issues caused by optical misalignment.

For perfectionists in astrophotography, we recommend using BXT software after stacking your images to achieve flawless correction of peripheral star points. View B&A

Out of stock

Manual

Technical Specification

Lens Type: 6-Element Petzval Design

Focal Length: 178 mm

Diameter: 51 mm

Aperture: f/3.5

Image circle: 43.2 mm

Focuser: WIFD R&P Focuser; Compatible with EAF

Adapter Included: Tilt Adjuster; Rotator; M54 → M48 Adapter

Optional Flattener: No Flattener Required

Camera Format: Full Frame (Compatiable); APS-C (Recommended); M4/3

Tube Length: 210 mm

OTA Weight: 1.67 kg / 3.68 lbs

Total Weight: 2.29 kg / 5.05 lbs

Diagram Reports

Disclaimer

Due to the nature of MiniCat’s fast aperture optical design, edge stars may not be as round as with other RedCats. However, our tests show it still outperforms conventional lenses. With aberration correction software like BXT, peripheral distortions can be perfectly corrected on APS-C sensors, while Full Frame may need some fine-tuning for even better results.

Tension screw:

When using the telescope with the motor, please ensure that the tension screw is not over-tightened. Over-tightening the tension screw may cause damage to the focuser.

Think of it like driving a car and pressing the gas pedal while also pressing the brake simultaneously. Just as this action could harm your car's systems, over-tightening the tension screw could compromise the functionality of your telescope's focuser.

What's in the box

MiniCat 51

Bahtinov Cap

M48 adapter

Dual Mounting Plate

Mounting Ring Handle bar

Soft Carry Case

Allen Key Set

Agile & highly efficient

Designed for photography enthusiasts who love wide-angle views. Its standout feature is an ultra-bright f/3.5 aperture, allowing you to capture faint nebulae or comets in a very short time.

UltraFast Petzval

The innovative 6-element Petzval design boosts traditional Cat telescopes' efficiency with a cutting-edge optical system.

Extra-low Dispersion (ED) glasses

Contains 2 Super ED glasses and lanthanum lenses with advanced fully multi-coated, delivering sharp, vibrant images with true-to-life colors, significantly reducing chromatic aberration.

Needs NO Flattener

The Petzval design inherently flattens the field, eliminating the need for an external field flattener.

ultra-bright

f/3.5 Aperture

2x

faster than
RedCat 51 (f/4.9)

Cygnus Region Widefield

Yungshih Lee

NGC 7000 Widefield in SII/Hb

Yungshih Lee

M8 to M24 Wide Field

Yungshih Lee

Brighter And Wider

Switch between tabs to see the different FOV of both 51.

Compatible with Electronic Motorized Devices

Hassle Free Installation
( no mounting barcket kit required )

Leading the market

Wo patented design

The MiniCat holds three unique patents, ensuring easy and perfect focusing along with precise coaxial image quality, preventing draw tube tilt issues caused by optical misalignment.

:

Internal Focuser

The WIFD focusing Design relocates the focuser to the center of the telescope, addresses the issue of tube tilt caused by the weight of accessories and cameras.

Learn More

Integrated Bahtinov mask

Laser engraved on high-definition and stable optical PMMA. Enhances astrophotography experience with quick and accurate adjustments.

CAT Handle Bar

Crafts for enhanced portability and versatility.

Mounting Ring

Designed for seamless functionality without compromising on stability. Engineered with wide surface contacts, this innovative ring ensures a secure fit while enabling fast, easy detachment.

Dual side Dovetail Plate

The lightweight dovetail plate is designed with both Vixen-style and Arca-Swiss types, offering enhanced compatibility with various mounts and mounting rings.

comprehensive configuration

Precision Imaging Adjustment

Tilt Adjuster

The built-in tilt adjuster makes it easy to correct camera sensor tilt issues.

Camera Angle Rotator

Correct any angular discrepancies, and get the perfect angle on your images.

Ultra-portable

With a total weight of only 2.29 kg, it is lightweight and portable, making it perfect for travel and family fun.

Widest Astrograph //

// Sharpest Lens

MiniCat 51 can also be used as a regular photographic lens. Its telescope-grade APO optics deliver sharper images and more accurate color.

Correctable Corner Imperfections

Due to the nature of MiniCat’s fast aperture optical design, edge stars may not be as round as with other RedCats. However, our tests show it still outperforms conventional lenses. With aberration correction software like BXT, peripheral distortions can be perfectly corrected on APS-C sensors, while Full Frame may need some fine-tuning for even better results.

:

▼ APS-C ( Recommended )