A 0.8x focal reducer is one of the most effective upgrades for refractor astrophotography. By shortening the effective focal length of your telescope, a focal reducer speeds up the focal ratio, which means shorter exposure times, a wider field of view and more of large deep-sky targets like the Andromeda Galaxy, the North America Nebula and the Pleiades in a single frame. Explore Scientific's 0.8x focal reducer and field flattener is designed to pair with our ED APO refractors, flattening the image plane so stars stay round and sharp from the center of the frame to the edges.
This collection brings together the 0.8x focal reducer along with matching ED80 telescope packages built around it, making it easy to assemble a complete, well-matched imaging setup. Whether you are capturing your first nebula with a DSLR or mirrorless camera or refining a dedicated astronomy camera workflow, a quality focal reducer helps you collect more light in less time and produce cleaner, more detailed astrophotography images.
When choosing a focal reducer, match it to your telescope's focal ratio and your camera's sensor size, and pay attention to back focus, the precise distance between the reducer and the sensor, which is critical for round stars in the corners. Explore Scientific camera adapters, T-rings and extension rings make it easy to dial in the correct spacing. A reduced, flat-field refractor on a tracking equatorial mount such as the iEXOS-100 is one of the most popular and forgiving setups for beginning deep-sky astrophotographers, and it remains a favorite of experienced imagers who want fast, wide-field results from a compact, portable telescope.
