Meet the EdgeHD 1100 SCT OTA: Celestron's most premium Schmidt-Cassegrain Astrograph.

With its Celestron EdgeHD Optics producing a flat-field image from edge-to-edge, this C11 SCT delivers pinpoint stars across the entire field of view. Compared to a standard Schmidt-Cassegrain telescope, the Celestron 11 Edge HD records a focal plane that is three times flatter. Coupled with Celestron's proprietary StarBright XLT Coatings that maximize light transmission, the Celestron EdgeHD 11 system is built to produce exceptional views and images for any dedicated astronomer.

 

Features

• Aperture: 279.4mm (11-inch), giving this Celestron C11 tremendous light-gathering power for viewing faint objects.

• Focal Length: 2800mm (f/10), an ideal focal length in this Cassegrain Reflecting telescope for high-resolution planetary views and imaging.

• Optics: Aplanatic, flat-field Celestron EdgeHD optics are the core of this premium Celestron telescope.

• Coatings: Premium StarBright XLT Coatings are used on all optical surfaces.

• Mounting: This C11 OTA includes a CGE Dovetail Bar for secure mounting.

 

Specialized Features

Certain features are only found on the Celestron EdgeHD range, setting this Celestron C11 OTA apart from standard models. These include:

• Mirror Clutches: Flexible tension clutches hold the primary mirror in place, reducing image shift to keep objects perfectly centered in the eyepiece or on a camera sensor.

• Tube Vents: Cooling vents on the rear cell of the Celestron C11 allow hot air to be released from behind the primary mirror, helping the telescope reach thermal equilibrium for sharper views.

• Fastar Versatility: This Celestron EdgeHD 11 SCT can be converted from f/10 to an ultra-fast f/2 with a separate FASTAR adapter. This makes it one of the most flexible Cassegrain telescopes available, suitable for both visual use and a wide range of imaging applications

 

Rigorous Quality Control Standards

Celestron takes the quality assurance of their Celestron EdgeHD series seriously. Each C11 SCT tube undergoes severe scrutiny by a trained engineer. Each OTA for the Celestron 11 Edge HD faces a camera and artificial star to ensure its optical system is up to par, making every Cassegrain Reflecting telescope in this series personally tested to fit high standards for optical performance.

 

This product is covered by Celestron's 2-Year Warranty.

 

Full Specifications

Optical Tube Assembly (OTA)

Optical Design	Schmidt-Cassegrain (SCT) EdgeHD
Aperture	279.4mm (11-inches)
Focal Length	2800mm (110-inches)
Focal Ratio	f/10.0
Included Eyepiece	23mm (122x Magnification)
Finderscope	9x50
Star Diagonal	2" with 1.25-inch Adapter
Optical Tube Construction	Aluminium
Highest Useful Magnification	660x
Lowest Useful Magnification	40x
Limiting Stellar Magnitude	14
Resolution (Rayleigh)	0.5 Arc Seconds
Resolution (Dawes)	0.42 Arc Seconds
Light Gathering Power (Compared to Human Eye)	1593x
Secondary Mirror Obstruction	95mm (3.75")
Secondary Mirror Obstruction by Diameter	34%
Secondary Mirror Obstruction by Area	12%
Optical Coatings	StarBright XLT
Optical Tube Length	610mm (24")
Optical Tube Diameter	312.42mm (12.3")
Optical Tube Weight	13kg
Dovetail	CGE Dovetail Bar
Warranty	Celestron 2 Year Warranty

 

Recommended Accessories

	Celestron 0.7x Reducer Lens for EdgeHD 1100 Improves coma correction and reduces focal ratio for deep sky imaging.
	Celestron Omni 2x Barlow Lens Double the magnification of your telescope with a barlow lens. Highly recommended if you are interested in viewing the planets. Don't go without it!
	Celestron CGX Equatorial Mount and Tripod The Celestron CGX Equatorial Mount and Tripod is a compatible computerised telescope mount to carry this OTA.
	Celestron CGX-L Equatorial Mount and Tripod The Celestron CGX-L Equatorial Mount and Tripod is a compatible computerised telescope mount to carry this OTA.

 

Why Shop Celestron from OpticsCentral?

OpticsCentral is a Premier Select Dealer for Celestron in Australia, offering expert advice, local warranty support, and access to genuine spare parts. As an authorised Celestron Premier Select Dealer, we provide local warranty support and fast turnaround on repairs—giving you peace of mind with every purchase.

 

About Celestron

Imagine a humble beginning – a 6-inch reflector telescope crafted by Tom Johnson for his young son. This was the spark that ignited a transformative journey. As time passed, his designs evolved into larger, more sophisticated scopes. Today, Celestron shines as an industry trailblazer, renowned for crafting precision optical equipment. From computerised marvels to traditional telescopes, binoculars, spotting scopes and more, Celestron's portfolio is a universe of possibilities. With a legacy spanning over 50 illustrious years, Celestron has earned admiration from both avid hobbyists and dedicated astronomers worldwide. But they don't rest on their laurels; innovation propels them forward. They constantly broaden their product horizons while illuminating minds through global science education initiatives. Celestron's story is one of innovation, evolution and a passion for the cosmos. Join them on this extraordinary journey of discovery and inspiration.

 

Product Code: 91050-XLT