Explore Scientific ED127 FCD100 Aluminum Triplet Refractor
Explore Scientific
FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor is an optical tube for general deep-sky imaging and visual observing.
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Specifications
Optics
- Optical design
- Air-spaced APO triplet refractor
- Aperture
- 127 mm
- Focal length
- 952 mm
- Focal ratio
- f/7.5
- Dawes limit
- 0.91"
- Glass
- FCD-100
Specifications
- Focuser
- 2.5\" rotating dual-speed hexagonal focuser (10:1 micro)
Mechanical
- Weight
- 18 lb; 10 kg
Astrophotography Fit
Best for general deep-sky imaging and visual observing when the mount, camera format, and correction hardware are chosen as one system.
FCD100 Series 127mm f/7.5 Aluminum Air-Spaced Triplet ED APO Refractor sits in the telescope slot for general deep-sky imaging and visual observing. The important buying question is whether the optical design, focal length, and mount demands match the targets you actually shoot.
Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.
Best paired with
- Corrected field flattener or reducer when the design requires one
- Cooled APS-C or smaller astro cameras matched to the image circle
- Autofocus, guide scope or OAG, and a mount with comfortable payload margin
Not recommended for
- Large full-frame sensors unless the corrected field supports them
- Very small travel mounts near their realistic imaging payload limit
- Buyers expecting one telescope to be ideal for every target size
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Astronomics Astronomics | $1,599.00 | In stock Updated 5/14/2026 | View Offer - $1,599.00 |
| Cloud Break Optics Cloud Break Optics | $1,599.99 | In stock Updated 5/15/2026 | View Offer - $1,599.99 |
| High Point Scientific High Point Scientific | $1,599.99 | In stock Updated 5/12/2026 | View Offer - $1,599.99 |
| Mile High Astronomy Mile High Astronomy | $2,499.99 | In stock Updated 5/12/2026 | View Offer - $2,499.99 |