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Explore Scientific ED80 FCD100 Series 80mm apochromatic triplet refractor telescope with field flattener

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

by Explore Scientific
$1,299.99
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An 80mm FCD100 Triplet Bundled with a Dedicated Field Flattener

This fast f/6 refractor pairs genuine HOYA FCD100 extra-low dispersion glass with an air-spaced triplet lens system and fully multi-coated optics for superior color correction and sharpness in a compact 80mm package.

Designed for both astrophotography and visual observation, the tube comes bundled with a dedicated field flattener optimized for f/5 to f/7 focal ratios, correcting field curvature and reducing coma for cleaner stars across the frame.

The 2.5-inch hexagonal focuser supports up to 10 lbs of imaging gear, and the kit includes two extension tubes and a dew shield so you can start imaging right out of the box.

Explore Scientific ED80 FCD100 Series 80mm apochromatic triplet refractor telescope with field flattener

Key Features

  • 80mm Air-Spaced Triplet - genuine HOYA FCD100 extra-low dispersion glass for superior color correction
  • Fast f/6 Focal Ratio - 480mm focal length for wide-field imaging and visual use
  • Dedicated Field Flattener - optimized for f/5 to f/7, corrects field curvature and coma
  • 2.5-Inch Hexagonal Focuser - supports up to 10 lbs of imaging equipment
  • Fully Multi-Coated Optics - enhanced light transmission for bright, high-contrast views
  • Includes Extension Tubes and Dew Shield - ready for imaging out of the box
Explore Scientific ED80 FCD100 field flattener f/5 to f/7
Specifications
Optical Design Air-Spaced Triplet (FCD100 ED Glass, Apochromatic Refractor)
Aperture 80mm
Focal Length 480mm
Focal Ratio f/6
Limiting Magnitude 12
Resolution 1.45 arcsec
Tube Diameter 85mm
Tube Length (with dew shield) 18.5 in / 475mm
Tube Length (without dew shield) 15 in / 381mm
Focuser 2.5-Inch Hexagonal (Supports up to 10 lbs)
Mount Type Vixen-Style Dovetail (OTA Only)
Field Flattener ES-FF2 (f/5 to f/7), Requires 55mm +/-2mm Sensor Spacing
Included Accessories Field Flattener, Two Extension Tubes, Dew Shield
Model / SKU ES-FCD100-0806-FF
Weight 7.5 lbs
Warranty Limited warranty, activated with registration within 60 days of purchase

Talk to a Specialist Contact Us Email a Specialist Shipping Info

Description

An 80mm FCD100 Triplet Bundled with a Dedicated Field Flattener

This fast f/6 refractor pairs genuine HOYA FCD100 extra-low dispersion glass with an air-spaced triplet lens system and fully multi-coated optics for superior color correction and sharpness in a compact 80mm package.

Designed for both astrophotography and visual observation, the tube comes bundled with a dedicated field flattener optimized for f/5 to f/7 focal ratios, correcting field curvature and reducing coma for cleaner stars across the frame.

The 2.5-inch hexagonal focuser supports up to 10 lbs of imaging gear, and the kit includes two extension tubes and a dew shield so you can start imaging right out of the box.

 Explore Scientific ED80 FCD100 Series 80mm apochromatic triplet refractor telescope with field flattener

Key Features

  • 80mm Air-Spaced Triplet - genuine HOYA FCD100 extra-low dispersion glass for superior color correction
  • Fast f/6 Focal Ratio - 480mm focal length for wide-field imaging and visual use
  • Dedicated Field Flattener - optimized for f/5 to f/7, corrects field curvature and coma
  • 2.5-Inch Hexagonal Focuser - supports up to 10 lbs of imaging equipment
  • Fully Multi-Coated Optics - enhanced light transmission for bright, high-contrast views
  • Includes Extension Tubes and Dew Shield - ready for imaging out of the box
 Explore Scientific ED80 FCD100 field flattener f/5 to f/7
Specifications
Optical Design Air-Spaced Triplet (FCD100 ED Glass, Apochromatic Refractor)
Aperture 80mm
Focal Length 480mm
Focal Ratio f/6
Limiting Magnitude 12
Resolution 1.45 arcsec
Tube Diameter 85mm
Tube Length (with dew shield) 18.5 in / 475mm
Tube Length (without dew shield) 15 in / 381mm
Focuser 2.5-Inch Hexagonal (Supports up to 10 lbs)
Mount Type Vixen-Style Dovetail (OTA Only)
Field Flattener ES-FF2 (f/5 to f/7), Requires 55mm +/-2mm Sensor Spacing
Included Accessories Field Flattener, Two Extension Tubes, Dew Shield
Model / SKU ES-FCD100-0806-FF
Weight 7.5 lbs
Warranty Limited warranty, activated with registration within 60 days of purchase

Talk to a Specialist Contact Us Email a Specialist Shipping Info

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Telescope Depot.

But first, you should definitely hear from our customers here.

  • Available Free Shipping USA-wide.

  • Price Match Guarantee. Best prices online guaranteed.

  • 30 Day Easy Returns. No happy with your product, we'll take it back no questions asked.

  • Great Service. We pride ourselves on the best service, anywhere.

  • Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.

Shipping

This policy applies to orders from the United States. It is intended to ensure that you are aware of our shipping policies and procedures. By placing an order in this store, you accept the policies contained herein.

A.  Shipping Country

We currently ship to addresses within the United States.

At this time, we do not offer international shipping.

B. Order Processing Time

Orders are typically processed within 1–2 business days (Monday through Friday). Any orders submitted after our daily cut-off time, on weekends, or during U.S. public holidays will be processed on the next business day.

C. Order Cut-Off Time

Our daily order cut-off time is 5:00 PM ET

Orders received after this time will enter processing on the following business day.

D. Shipping Options

We offer the following shipping options:

  • Standard Shipping: 5–10 business days — Free
  • Express Shipping: 3–5 business days — $15

E. Carrier Services

For deliveries within the United States, we partner with reliable carriers such as USPS, UPS, FedEx, and DHL.

F. Tracking Information

Once your order has shipped, you will receive a shipping confirmation email containing your tracking number.

Tracking updates may take 24–48 hours to appear after dispatch.

If you have not received tracking information within 3 business days after your order has shipped, please contact us at sales@telescopedepot.com.

G. Address Change 

The delivery address cannot be changed after shipping. If you need to change the delivery location of your order, please contact us within 24 hours of placing your order at sales@telescopedepot.com.

H. Cancellations

If you need to change your order before receiving it, we can accept cancellations at any time up until shipment. If an order has already been shipped, please refer to our refund policy.

I. Damaged or Missing Deliveries

If your order arrives damaged, or if you believe there is an issue with your delivery, please contact our customer support team as soon as possible.

When contacting us, please include:

  • Your order number
  • A description of the issue
  • Photographs of the product and packaging (where applicable)

We will review the information provided and advise you on the next steps.

J. Contact Us

If you have any questions about shipping, delivery, tracking, or your order, please contact us:

Trade name: Telescope Depot

Phone number: +1 (855) 501-0541

Email: sales@telescopedepot.com

Address: 4941 Fountain Springs Dr, Gainesville, GA 30506, United States

Business hours: Monday–Friday, 9:00 AM–5:00 PM ET

What's Included
Reviews
Description

An 80mm FCD100 Triplet Bundled with a Dedicated Field Flattener

This fast f/6 refractor pairs genuine HOYA FCD100 extra-low dispersion glass with an air-spaced triplet lens system and fully multi-coated optics for superior color correction and sharpness in a compact 80mm package.

Designed for both astrophotography and visual observation, the tube comes bundled with a dedicated field flattener optimized for f/5 to f/7 focal ratios, correcting field curvature and reducing coma for cleaner stars across the frame.

The 2.5-inch hexagonal focuser supports up to 10 lbs of imaging gear, and the kit includes two extension tubes and a dew shield so you can start imaging right out of the box.

 Explore Scientific ED80 FCD100 Series 80mm apochromatic triplet refractor telescope with field flattener

Key Features

  • 80mm Air-Spaced Triplet - genuine HOYA FCD100 extra-low dispersion glass for superior color correction
  • Fast f/6 Focal Ratio - 480mm focal length for wide-field imaging and visual use
  • Dedicated Field Flattener - optimized for f/5 to f/7, corrects field curvature and coma
  • 2.5-Inch Hexagonal Focuser - supports up to 10 lbs of imaging equipment
  • Fully Multi-Coated Optics - enhanced light transmission for bright, high-contrast views
  • Includes Extension Tubes and Dew Shield - ready for imaging out of the box
 Explore Scientific ED80 FCD100 field flattener f/5 to f/7
Specifications
Optical Design Air-Spaced Triplet (FCD100 ED Glass, Apochromatic Refractor)
Aperture 80mm
Focal Length 480mm
Focal Ratio f/6
Limiting Magnitude 12
Resolution 1.45 arcsec
Tube Diameter 85mm
Tube Length (with dew shield) 18.5 in / 475mm
Tube Length (without dew shield) 15 in / 381mm
Focuser 2.5-Inch Hexagonal (Supports up to 10 lbs)
Mount Type Vixen-Style Dovetail (OTA Only)
Field Flattener ES-FF2 (f/5 to f/7), Requires 55mm +/-2mm Sensor Spacing
Included Accessories Field Flattener, Two Extension Tubes, Dew Shield
Model / SKU ES-FCD100-0806-FF
Weight 7.5 lbs
Warranty Limited warranty, activated with registration within 60 days of purchase

Talk to a Specialist Contact Us Email a Specialist Shipping Info

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Telescope Depot.

But first, you should definitely hear from our customers here.

  • Available Free Shipping USA-wide.

  • Price Match Guarantee. Best prices online guaranteed.

  • 30 Day Easy Returns. No happy with your product, we'll take it back no questions asked.

  • Great Service. We pride ourselves on the best service, anywhere.

  • Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.

Shipping

This policy applies to orders from the United States. It is intended to ensure that you are aware of our shipping policies and procedures. By placing an order in this store, you accept the policies contained herein.

A.  Shipping Country

We currently ship to addresses within the United States.

At this time, we do not offer international shipping.

B. Order Processing Time

Orders are typically processed within 1–2 business days (Monday through Friday). Any orders submitted after our daily cut-off time, on weekends, or during U.S. public holidays will be processed on the next business day.

C. Order Cut-Off Time

Our daily order cut-off time is 5:00 PM ET

Orders received after this time will enter processing on the following business day.

D. Shipping Options

We offer the following shipping options:

  • Standard Shipping: 5–10 business days — Free
  • Express Shipping: 3–5 business days — $15

E. Carrier Services

For deliveries within the United States, we partner with reliable carriers such as USPS, UPS, FedEx, and DHL.

F. Tracking Information

Once your order has shipped, you will receive a shipping confirmation email containing your tracking number.

Tracking updates may take 24–48 hours to appear after dispatch.

If you have not received tracking information within 3 business days after your order has shipped, please contact us at sales@telescopedepot.com.

G. Address Change 

The delivery address cannot be changed after shipping. If you need to change the delivery location of your order, please contact us within 24 hours of placing your order at sales@telescopedepot.com.

H. Cancellations

If you need to change your order before receiving it, we can accept cancellations at any time up until shipment. If an order has already been shipped, please refer to our refund policy.

I. Damaged or Missing Deliveries

If your order arrives damaged, or if you believe there is an issue with your delivery, please contact our customer support team as soon as possible.

When contacting us, please include:

  • Your order number
  • A description of the issue
  • Photographs of the product and packaging (where applicable)

We will review the information provided and advise you on the next steps.

J. Contact Us

If you have any questions about shipping, delivery, tracking, or your order, please contact us:

Trade name: Telescope Depot

Phone number: +1 (855) 501-0541

Email: sales@telescopedepot.com

Address: 4941 Fountain Springs Dr, Gainesville, GA 30506, United States

Business hours: Monday–Friday, 9:00 AM–5:00 PM ET

What's Included
Reviews