Svbony Launches SV580: An 80mm Astrograph for Full-Frame Cameras

Svbony has launched a new telescope for deep-sky astrophotography. The SV580 is an 80mm f/4.5 Petzval APO astrograph with a 360mm focal length and a 44mm image circle. It is designed to work with full-frame cameras and includes field correction within its optical system. The telescope uses six optical elements arranged in four groups. Two of those elements use ED glass. Svbony has also included a 360-degree camera rotator, 55mm back focus, and an EAF mounting provision.

An 80mm astrograph with a wide field of view

An 80mm refractor can serve many roles in astrophotography, but the SV580 has a fairly specific job. Its 360mm focal length gives photographers a wide view of the sky while still offering considerably more reach than a conventional wide-angle camera lens.

That makes the telescope well suited to objects that occupy a large area of the night sky. The Rosette Nebula, North America Nebula, and California Nebula are examples of targets that can benefit from a wider field. Large star clusters and sections of the Milky Way can also work well at this focal length.

The 80mm aperture gives the telescope more light-gathering ability than a small camera lens. The f/4.5 focal ratio is another important aspect of the design. A faster optical system can collect the required signal in less time than a slower system when other factors remain the same.

A six-element petzval optical system

Svbony has chosen a six-element Petzval APO design, with the elements arranged in four groups. Two of the six elements use ED glass. The company says the optical design controls chromatic aberration while maintaining image quality across the field.

For astrophotography, field correction can be just as important as color correction. A telescope can produce a sharp image near the center while stars toward the corners become stretched or distorted. The effect becomes easier to see on a large sensor because the camera records a much wider portion of the telescope’s optical field.

The company specifies a 44mm image circle. That is larger than the diagonal of a standard 36 × 24mm full-frame sensor, giving the telescope enough coverage for full-frame imaging.

Svbony‘s 44mm image-circle figure tells us the intended coverage, but independent images will show how the stars actually look at the extreme corners of a full-frame sensor. That will be one of the more interesting things to examine once more photographers start using the telescope.

Other features of SV580

The SV580 provides 55mm of back focus, along with M48 and M54 camera interfaces. The telescope also includes a built-in 2-inch filter holder and an M93 × 1 front filter thread. This gives photographers several ways to incorporate filters into the system.

Another useful feature sits between the telescope and camera. The SV580 has a 360-degree lockable camera rotator. A photographer can rotate the camera and change the composition without moving the telescope itself.

Svbony has also provided a helical focuser and a mounting solution for an electronic automatic focuser. EAF systems have become common in deep-sky imaging because they allow photographers to automate focus changes during long sessions.

The accessories are equally attractive

The accessories supplied with the SV580 include tube rings, a handle, and a 254mm Vixen-style dovetail plate. The handle also includes a Vixen finder saddle. This gives astrophotographers a place to mount a finder or guide scope without having to add a separate mounting solution. The EAF mounting kit comes in the box as well.

Svbony also supplies M48 and M54 camera adapters, a metal lens cover, and an M48 dust cap. A carrying case and instruction manual complete the package.

The Vixen-style dovetail is familiar to astrophotographers and works with a wide range of astronomical mounts. The finder saddle can also accommodate a small guide scope for autoguided imaging.

Price and availability

The Svbony SV580 is priced at $1,699. It is currently available for pre-ordering via Svbony’s global website. The pre-sale begins on November 15, 2026.

Clear skies!

---