Explore Scientific ED127 Essential Triplet Refractor

Name: Explore Scientific ED127 Essential Triplet Refractor
Brand: Explore Scientific

Explore Scientific

ED127 Essential Series 127mm APO Triplet is an optical tube for general deep-sky imaging and visual observing.

telescope midrange

$Explore Scientific ED127 Essential Triplet Refractor$

Best Current Offer

Cloud Break Optics

In stock

$1,099.99

Other retailers

High Point Scientific (In stock)
$1,499.99
Mile High Astronomy (In stock)
$1,499.99

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: HOYA extra-low dispersion (ED) glass and proprietary EMD enhance

Specifications

Focuser: 2"

Mechanical

Weight: 18 lb; 8.16 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.

ED127 Essential Series 127mm APO Triplet 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
Cloud Break Optics Cloud Break Optics	$1,099.99	In stock Updated 11/4/2026	View Offer - $1,099.99
High Point Scientific High Point Scientific	$1,499.99	In stock Updated 11/4/2026	View Offer - $1,499.99
Mile High Astronomy Mile High Astronomy	$1,499.99	In stock Updated 11/4/2026	View Offer - $1,499.99

Price History

Chronological retailer pricing with out-of-stock points shown at reduced opacity.

Cloud Break Optics High Point Scientific Mile High Astronomy