Skip to content

ACF, EdgeHD & RC Telescopes

13 Items

Celestron CPC Deluxe 800 with Edge HD Optics - 11007

SKU: CEL-11007
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$2,449.00 $2,249.00

Celestron 925 CPC Deluxe with EdgeHD Optics - 11008

SKU: CEL-11008
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$3,259.00 $3,009.00

Celestron CPC Deluxe 1100 with Edge HD Optics - 11009

SKU: CEL-11009
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$3,879.00 $3,579.00

Celestron Advanced VX Series 8" EdgeHD Go To Telescope - 12031

SKU: CEL-12031
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
  • Extra Free Accessories: Celestron Polar Scope for AVX Mount
Free shipping Free shipping
$2,149.00 $1,934.00

Celestron EdgeHD 8 OTA - 8" f/10 Aplanatic SCT OTA - CGE Dovetail - 91030-XLT

SKU: CEL-91030-XLT
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
Free shipping Free shipping
$1,349.00

8" Celestron Edge HD 8 SCT OTA - CG-5 Dovetail - 91031-XLT

SKU: CEL-91031-XLT
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
Free shipping Free shipping
$1,349.00

Celestron EdgeHD 925 OTA - 9.25" f/10 HD Aplanatic SCT Optical Tube Assembly - CGE Dovetail - 91040-XLT

SKU: CEL-91040-XLT
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
Free shipping Free shipping
$2,399.00

Celestron EdgeHD 11 OTA - 11" f/10 Aplanatic SCT OTA - CGE Dovetail - 91050-XLT

SKU: CEL-91050-XLT
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
Free shipping Free shipping
$3,499.00

Celestron EdgeHD 14 OTA - 14" f/11 Aplanatic SCT OTA - CGE Dovetail - 91060-XLT

SKU: CEL-91060-XLT
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 356mm (14.02")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
Free shipping Free shipping
$5,999.00
Celestron 925 EdgeHD on CGX-L Mount

Celestron CGX-L 925 EdgeHD Computerized Telescope - 12075

SKU: CEL-12075
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$5,499.00
Celestron 1400 EdgeHD Telescope on CGX-L Equatorial Mount

Celestron CGX-L 1100 EdgeHD Computerized Telescope - 12076

SKU: CEL-12076
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$6,399.00
Celestron 1400 EdgeHD on CGX-L Mount

Celestron CGX-L 1400 EdgeHD Computerized Telescope - 12077

SKU: CEL-12077
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 356mm (14.02")
  • Focal Ratio: f/11
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$8,699.00

Celestron CGX 925 EdgeHD Computerized Telescope - 12056

SKU: CEL-12056
  • Optical Design: Celestron EdgeHD
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
Free shipping Free shipping
$4,199.00

Twenty years ago, telescopes designs like the Ritchey-Chretien, which are meant for astrophotography and not for visual use, were purchased by professionals, universities and advanced amateur astronomers with pretty deep wallets! However, as digital imaging became more popular and the price of CCD sensors came down, more amateur astronomers entered the world of astro-imaging and of course, they were on the look-out for optical systems that would work together with their cameras to produce the best images. Before long, several companies released their version of a telescope that was optimized for imaging. The most popular designs include Celestron's EdgeHD and Meade's ACF, or Advanced Coma-Free telescopes.

True Ritchey-Chretien telescopes, also known as RC telescopes, have a folded optical design like a Schmidt- or Maksutov-Cassegrain but do not have a corrector plate. The optics consist of a primary and secondary hyperbolic mirror to eliminate coma and spherical aberrations. Removing these aberrations allows astronomers to accurately take scientific measurements regarding a star's location. Other optical issues inherrent in the Ritchey-Chretien design, such as astigmatism and field curvature can be greatly reduced with the addition of a field flattener, allowing serious amateur astronomers to image with larger sensors and still have great star images across the field of view.

Variations on this design include the Celestron EdgeHD, a telescope with an optimized aplanatic flat-field Schmidt-Cassegrain optical system, and the Meade ACF, or Advanced Coma-Free telescope. Both telescope manufacturers advertise a much flattener field than that of a standard Schmidt-Cassegrain; a real boon to amateur astronomers who want to produce beautiful images of celestial objects. A flattened field yields star images that have a pleasingly round shape all the way to the edge of the field of view, whether you are using a large imaging sensor or are looking through a super wide angle eyepiece.

High Point Scientific is rated 4.9/5 based on 1347 reviews