William Optics FLAT 7A 0.8x reducer field flattener for astrophotography
Roll over image to zoom in Click on image to zoom
William Optics FLAT 7A 0.8x reducer field flattener for astrophotography

William Optics FLAT 7A 0.8x Reducer Flattener

William OpticsSKU: P-FLAT7A
Price:
$1,087.00 CAD
Stock:
On Backorder — ships when available
  • Description
  • Specifications

The William Optics FLAT 7A is a 0.8x reducer/flattener for compatible William Optics refractors. It is designed to widen the field of view, speed up the optical system, and improve edge-to-edge star correction for astrophotography.

Who Is This Product Best For?

Best for astrophotographers using compatible William Optics refractors who want faster wide-field imaging and flatter stars across the frame.

Why Choose This Product?

  • 0.8x reduction: Widens the field and speeds up imaging.
  • Field correction: Helps improve corner star shape.
  • Camera-focused design: Built for deep-sky astrophotography systems.

Recommended Uses

  • Deep-sky imaging
  • Wide-field astrophotography
  • Compatible William Optics refractor setups

Compatibility and Accessory Notes

Confirm telescope compatibility, adapter thread, camera connection, and required backfocus spacing before imaging.

Important Limitations

This is an imaging accessory and requires correct spacing for best results.

Our Recommendation

Choose the FLAT 7A when your compatible William Optics refractor needs 0.8x focal reduction and field flattening for deep-sky imaging.

Product TypeReducer flattener
Reduction Factor0.8x
Primary UseWide-field deep-sky astrophotography
CompatibilityCompatible William Optics refractors
Important NoteCorrect backfocus spacing is required for best results

You may also like

Recently viewed

Recent Blog Posts

View all
Guide scope or off-axis guider: a PHD2 guide graph reporting 0.41 arcsecond RMS beside elongated stars from the same night

Your Guide Graph Is Lying to You

astrophotography Stephen Mallia
You drove ninety minutes to dark sky, PHD2 held 0.4 arcseconds all night, and half your subs still have eggs for stars. Here are the three things your

Read More
V-size Vixen and D-size Losmandy dovetail bar profiles compared to scale, about 44 mm against 75 to 84 mm

D-Size vs V-Size: A Complete Guide to Telescope Dovetail Systems

Stephen Mallia
What's the difference between D-size and V-size telescope dovetails? Here's everything you need to know.

Read More
A 55 mm back focus imaging train: spacer 16.5 mm, filter drawer 21 mm and camera sensor depth 17.5 mm, measured from the rear of the reducer

What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained

Stephen Mallia
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained Back focus is one of those astrophotography terms that c

Read More