$ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7$

$Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-0806-01$

$ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7$

$Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope - FCD100-0806-01$

$ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7$

Veil Nebula by George Lutch using ES ED80 FCD100, Moonlite CFL 2.5, Orion .8 Reducer / Flattener, ZWO 2" x 7 EFW, ZWO ASI2600MM Pro, Agena Astro 60mm Guide Scope, ZWO ASI174mm Mini, Software Bisque Paramount MyT

$ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7$

Explore Scientific

ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7

Name: ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7
Brand: Explore Scientific
SKU: FCD100-0806-FF
Price: 1132.99 USD
Availability: InStock

5.0

$ 1,132.99

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The Explore Scientific ED80-FCD100 Triplet Refractor is a compact, high-performance telescope designed for both astrophotography and visual observation. It features HOYA FCD100 extra-low dispersion glass for superior color correction and sharpness, combined with an air-spaced triplet lens system and fully multi-coated optics. The result is clear, high-contrast views of deep-sky objects and planetary detail.

This fast f/6 refractor includes a 2.5-inch hexagonal focuser capable of supporting heavy imaging accessories, two extension tubes for flexible spacing, and a Vixen-style dovetail for easy mounting. The included field flattener is optimized for f/5 to f/7 refractors and ensures sharp star points across the imaging field. Whether capturing wide-field nebulae or enjoying crisp lunar views, the ED80-FCD100 offers professional-grade optics in a portable package.

SKU: FCD100-0806-FF

Shipping & Returns

Free shipping on orders $70+ shipped within the continental United States. Special‑order items are excluded. USPS orders may take an additional business day for processing. Learn more.

Returns must be submitted within 30 days from the date of purchase for a refund or replacement. The item must be unused, in its original condition and packaging. Learn more.

Product Warranty

This product includes a 1-Year Limited Warranty, which can convert to the Explore STAR Transferable Extended Life of the Product Warranty when registered within 60 days of purchase. Click Here to register.

Warnings

⚠️ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Standout Features

FCD100 ED Glass Optics

Delivers excellent color correction and clarity with ultra-low dispersion HOYA glass.

Dedicated Field Flattener

Provides a flat imaging field for sharp edge-to-edge star performance with f/5 to f/7 refractors.

Precision 2.5-Inch Hex Focuser

Supports up to 10 pounds of gear and ensures stable, fine-tuned focusing for heavy imaging setups.

Lightweight & Travel-Ready

Compact design with built-in dew shield and Vixen-style dovetail for easy transport and setup.

Product Specifications

Item Number: FCD100-0806-02
Focal Length: 480mm
Focal Ratio: f/6
Limiting Magnitude: 12
Resolution: 1.45 arcsec
Tube Length w/ Dew Shield: 18.5"; 475mm
Tube Length w/out Dew Shield: 15"; 381mm
Diameter: 85mm
Weight: 7.5lb; 3.4kg
Dovetail: Vixen

Additional Product Information

Explore Scientific Field Flattener f/5 to f/7

When doing astrophotography with refractor-type telescopes, the faster the focal ratio the more field curvature becomes a problem. Field curvature will appear in the corners of astrophotographs, making the stars smear perpendicular to the axis of the image. This is called coma -- coma is Latin for comet, because the stars look like comets. The more the curvature, the closer to the center the coma appears. The larger the sensor, the worse the coma.

Astrophotographers can easily correct the coma by using a field flattener – an optical device that goes between the telescope and the camera. Field fatteners are not interchangeable, because these devices are designed to work with a small range of focal ratios.

The Explore Scientific field flattener is designed to work with telescopes with focal ratios between f/5 and f/7. Our device requires 55 mm (+/-2 mm) of spacing between the back of the device and the camera sensor.

NOTE: This device is for photographic use only. It is NOT intended for visual use.

ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7

Standout Features

Additional Product Information

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