Celestron EdgeHD 11

Name: Celestron EdgeHD 11
Brand: Celestron

Celestron

Celestron EdgeHD 11 is a 279.4 mm EdgeHD aplanatic Schmidt-Cassegrain for galaxies, planetary work, and other small high-resolution targets.

telescope $$$$

Best Current Offer

Cloud Break Optics

In stock

$4,499.00

Other retailers

High Point Scientific (In stock)
$4,499.00
Mile High Astronomy (In stock)
$4,499.00
Starizona (In stock)
$4,499.00
Telescopes.net (Backordered)
$4,499.00

Specifications

Optics

Optical design: EdgeHD aplanatic Schmidt-Cassegrain
Aperture: 279.4 mm
Focal length: 2800 mm
Focal ratio: f/10
Dawes limit: 0.42"
Glass: Lanthanum glass

Imaging

Image circle: 42 mm
Camera format: APS-C / full-frame with careful spacing
Full-frame coverage: No
Back focus: 146.05 mm
Reducer / flattener: Optional 0.7× EdgeHD reducer: 1960 mm at f/7

Mechanical

Focuser: Primary mirror focuser with mirror locks
Weight: 13 kg / 28 lb
Tube length: 610 mm

Astrophotography Fit

Best for galaxies, planetary work, and other small high-resolution targets when the mount, camera format, and correction hardware are chosen as one system.

Celestron EdgeHD 11 sits in the telescope slot for galaxies, planetary work, and other small high-resolution targets. The useful headline specs are aperture 279.4 mm, focal length 2800 mm, f/10.

Camera coverage: APS-C / full-frame with careful spacing. Image circle: 42 mm. Back focus: 146.05 mm.

Long focal length optics reward patience. Guiding accuracy, seeing, focus stability, mirror behavior, and mount capacity matter more here than they do on small refractors.

Weight matters here: 13 kg / 28 lb. Leave payload headroom for the camera, guider, focuser, dew control, and cables instead of judging the mount by bare tube weight alone.

Best paired with

Heavy-duty GoTo mount with generous imaging payload headroom
Off-axis guider, sensitive guide camera, and motorized focuser
Small-pixel planetary cameras or appropriately sized cooled deep-sky cameras

Not recommended for

Undermounted beginner rigs or windy portable setups
Large nebula framing without a reducer or mosaic plan
First deep-sky setup if guiding and collimation still feel unfamiliar

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	$4,499.00	In stock Updated 8/4/2026	View Offer - $4,499.00
High Point Scientific High Point Scientific	$4,499.00	In stock Updated 8/5/2026	View Offer - $4,499.00
Mile High Astronomy Mile High Astronomy	$4,499.00	In stock Updated 8/4/2026	View Offer - $4,499.00
Starizona Starizona	$4,499.00	In stock Updated 8/5/2026	View Offer - $4,499.00
Telescopes.net Telescopes.net	$4,499.00	Backordered Updated 8/5/2026	View Offer - $4,499.00

Price History

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

Cloud Break Optics High Point Scientific Mile High Astronomy Starizona