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Explore Scientific

Explore Scientific Field Flattener for f/5 to f/7 Refractors – ES-FF2F5/F7

Explore Scientific Field Flattener for f/5 to f/7 Refractors – ES-FF2F5/F7

$149.99
$149.99
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The Explore Scientific Field Flattener for f/5 to f/7 Refractors (ES-FF2F5/F7) is engineered to deliver superior edge-to-edge optical performance for astrophotographers using compatible refractor systems. Field curvature is a common issue in wide-field refractors, particularly at faster focal ratios. This Explore Scientific flattener minimizes curvature and distortion, ensuring stars remain sharp, round, and well-defined across the entire imaging sensor.

Designed for seamless integration into standard 2-inch imaging trains, the Explore Scientific field flattener enhances contrast and resolution, enabling more accurate and visually consistent deep-sky imaging. Whether capturing nebulae, galaxies, or rich star fields, this accessory significantly improves image quality while maintaining mechanical stability and optimal spacing.

Compatible Telescopes

This Explore Scientific field flattener is compatible with refractor telescopes featuring focal ratios from f/5 to f/7, including but not limited to:

  • Explore Scientific FirstLight 80 mm f/5 Refractor

  • Explore Scientific FirstLight 102 mm f/6.5 Refractor

  • Explore Scientific ED80 f/6 Air-Spaced Triplet

  • Explore Scientific ED102 f/7 Air-Spaced Triplet

  • Explore Scientific ED100 f/6 Triplet

  • Explore Scientific 127 mm f/7 Triplet Refractor

  • Explore Scientific 152 mm f/6.5 Refractor

  • Any refractor within the f/5–f/7 range

Features

  • Explore Scientific precision-engineered multi-element optical design

  • Corrects field curvature for improved edge detail and rounder stars

  • Enhances contrast, clarity, and overall image flatness

  • Ideal for deep-sky astrophotography with wide-field refractors

  • Easy integration into standard 2” imaging setups

  • Durable, precision-machined housing ensures secure, stable performance

Specifications

Specification Details
Model/SKU ES-FF2F5/F7
Brand Explore Scientific
Type Field Flattener
Compatible Focal Ratios f/5 – f/7 refractors
Optical Design Multi-element corrective lens system
Connection Size Standard 2" imaging train
Function Field curvature correction and edge sharpness
Primary Use Astrophotography
Housing Precision-machined optical assembly
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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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