William Optics FLAT 73A field flattener for Zenithstar 73 astrophotography

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William Optics FLAT 73A Field Flattener

Name: William Optics FLAT 73A Field Flattener
Brand: William Optics
SKU: P-FLAT73A-NEW
Price: 320.60 CAD
Availability: InStock

William OpticsSKU: P-FLAT73A-NEW

Price:

$320.60 CAD

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Description
Specifications

The William Optics FLAT 73A is a 1.0x field flattener designed for compatible William Optics refractors, especially Zenithstar 73 imaging systems. It helps correct field curvature so astrophotographers can capture sharper stars from the centre to the edge of the frame.

Who Is This Product Best For?

Best for astrophotographers using a compatible William Optics refractor who want improved corner star performance without reducing focal length.

Why Choose This Product?

1.0x correction: Keeps the telescope focal length unchanged.
Field flattening: Helps improve edge-to-edge star shape.
Imaging accessory: Designed for camera-based deep-sky astrophotography.

Recommended Uses

Zenithstar 73 astrophotography
Wide-field deep-sky imaging
Improving corner star sharpness

Compatibility and Accessory Notes

Confirm telescope compatibility, adapter requirements, and camera backfocus spacing before imaging.

Important Limitations

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

Our Recommendation

Choose the FLAT 73A if your compatible William Optics refractor needs field correction without focal reduction.

Product Type	Field flattener
Reduction Factor	1.0x
Primary Compatibility	Zenithstar 73 and compatible William Optics refractors
Primary Use	Astrophotography field correction
Important Note	Correct backfocus spacing is required for best results

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

William Optics FLAT 73A Field Flattener