The SVBONY SV193 0.8× Focal Reducer / Field Flattener is designed specifically for the SV503 80mm f/7 ED refractor, optimising the telescope for wide-field astrophotography. By reducing focal length and flattening the field, it delivers sharper stars across the entire image sensor and brighter, faster exposures.

Key Features

• 0.8× Focal Reduction & Field Flattening
  Reduces the focal length by 20% while flattening the field, minimising edge distortion and improving star sharpness across the frame.
• Brighter, Faster Imaging
  Shorter effective focal length allows more light to reach the sensor, reducing exposure times for deep-sky astrophotography.
• Optimised for SV503 80ED
  Precisely matched to the SV503 80mm f/7 ED refractor for optimal spacing, performance, and image quality.
• High-Quality Optical Design
  Multi-coated optical elements reduce aberrations and maintain high contrast and clarity across the field.
• Simple Integration
  Designed for straightforward attachment to the SV503 80ED, making it easy to incorporate into an imaging setup.

0.8× Photo Reducer / Field Flattener

The 0.8× reduction shortens the focal length while maintaining image quality, making the SV503 80ED more suitable for wide-field astrophotography and larger nebulae.

3-Element, 2-Group Optical Structure

The three-element, two-group optical design ensures effective field flattening and controlled aberrations, delivering sharp stars from centre to edge.

Hard-Anodised Aluminium Construction

The precision-machined aluminium body features a hard-anodised finish for durability, rigidity, and reliable spacing during long imaging sessions.

Filter & Camera Compatibility

The SV193 integrates easily with common astrophotography filters and camera adapters, allowing flexible configuration to suit different imaging trains.

Designed for Astrophotography

Purpose-built for imaging, the SV193 improves corner sharpness and reduces vignetting, making it ideal for DSLR, mirrorless, and dedicated astronomy cameras when paired with the SV503 80ED.