SVBONY Focal Reducer M54X1 Field Flattener Telescope Accessory

The SV193 2-Inch 0.8x Photo Reducer/Flattener for SV503 102f/7 ED Refractors is a versatile and high-performance accessory designed to enhance the capabilities of refractor telescopes. With its 0.8x focal reducer and field flattener features, it can meet the illumination needs of full-frame shooting, providing wider and sharper celestial images.

The SV193 is specifically designed for use with the SV503 102ED refractor telescope, but it can also be compatible with other makes and models of f/7 refractors that use 2" focusers. However, its performance with other ranges may not be as optimized.

One of the key features of the SV193 is its ability to convert the 714mm focal length f/7 SV503 102ED refractor into a 571mm f/5.6 system. This reduction in focal length allows for faster and wider astro and terrestrial photography. With the shorter focal length, the starry sky can be captured more extensively, the star points become finer, and the signal-to-noise ratio is improved under the same exposure conditions.

In addition to the focal length reduction, the SV193 also addresses the inherent field curvature common in all refractor telescopes. By flattening the field, it ensures that the images captured are sharply focused across the entire DSLR or CCD imaging chip, eliminating the issue of a sharp center and blurry edges.

The SV193 features a standard 2-inch socket at the front end to connect to the main lens, and a M48x0.75 threaded connection at the back end to accommodate the camera bayonet, supporting full-frame cameras. This versatile design allows users to easily integrate the SV193 into their astrophotography setup.

Furthermore, the SV193 includes a 360° field rotator at the end of the focusing tube, enabling users to meet their composition requirements without the need to turn the main lens. This feature also allows for the use of filter wheels, off-axis guiders, or astronomical cameras alongside the SV193.

Constructed with a 3-element/2-group lens structure and featuring FMC (Fully Multi-Coated) optics, the SV193 is designed for durability and optimal image quality. The blackened lens edges and hard anodized aluminum body contribute to its robust construction, helping to reduce weight while ensuring long-lasting performance.

Overall, the SV193 2-Inch 0.8x Photo Reducer/Flattener is a versatile and high-quality accessory that can greatly enhance the capabilities of refractor telescopes, enabling astrophotographers to capture wider, sharper, and more detailed celestial images.

product information: