Explore Scientific Field Flattener f/5 to f/7

Explore Scientific Field Flattener f/5 to f/7The Explore Scientific Field Flattener corrects field curvature for sharp, round stars across your entire imaging sensor. Refractor telescopes produce a curved focal plane, but camera sensors are flat without a field flattener, stars at the edges of your frame appear elongated or distorted. This fully multi coated flattener with 38mm clear aperture corrects that curvature without changing your telescope's focal length or f ratio. The 2" barrel and

The Explore Scientific Field Flattener corrects field curvature for sharp, round stars across your entire imaging sensor. Refractor telescopes produce a curved focal plane, but camera sensors are flat — without a field flattener, stars at the edges of your frame appear elongated or distorted. This fully multi-coated flattener with 38mm clear aperture corrects that curvature without changing your telescope's focal length or f/ratio.

The 2" barrel and M42x0.75 T-thread interface connect directly to your camera via a standard T-ring (sold separately). Back-focus distance is 55mm, matching the Explore Scientific corrector/reducer ecosystem for consistent spacing.

Note: This is an astrophotography accessory — it is not intended for visual use.

Key Features

• Fully multi-coated optics with 38mm clear aperture
• Corrects field curvature without changing focal length or f/ratio
• 2" barrel with M42x0.75 (T-thread) camera interface
• 55mm back-focus standard — consistent with the ES corrector/reducer ecosystem
• Premium high-gloss anodized aluminum construction

Compatible Telescopes

• ES Essential Series: ED80, ED102
• ES FCD100 Series: 80mm, 102mm
• ES DAR Series: DAR102, DAR127, DAR152

Compatible with a broader range of Explore Scientific refractors than the 0.8x Focal Reducer, including the larger 127mm and 152mm DAR models.