Skip to content
Price match 30-day returns* Talk to an astronomer before you buy

Optical Tubes Only (OTA)

Filters

$3,395.00 - $3,395.00
$3,395.00
$3,395.00 - $3,395.00
$3,395.00

Askar SQA106 106mm f/4.8 Quintuplet APO

ASK-SQA106
1 in stock

106mm Aperture f/4.8 Focal Ratio 509mm Focal Length Quintuplet Petzval APO Optical Design 55mm Image Circle for Medium Format Description FAQ S...

View full details
$3,395.00 - $3,395.00
$3,395.00
$3,395.00 - $3,395.00
$3,395.00
Askar SQA130 f/4.8 Quintuplet Petzval Astrograph
$4,799.00 - $4,799.00
$4,799.00
$4,799.00 - $4,799.00
$4,799.00

Askar SQA130 f/4.8 Quintuplet Petzval Astrograph

ASK-SQA130

130mm Aperture Quintuplet Petzval APO Optics 624mm Focal Length at a Fast f/4.8 Focal Ratio 55mm Corrected Image Circle for Medium Format Sensors ...

View full details
$4,799.00 - $4,799.00
$4,799.00
$4,799.00 - $4,799.00
$4,799.00
$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00

Askar SQA55 55mm f/4.8 Quintuplet APO

ASK-ASKSQA55
2 in stock

55mm Aperture Quintuplet APO Astrograph Fast f/4.8 Focal Ratio 264mm Focal Length Covers a 44mm Full-Frame Image Circle 14-Blade Aperture with f/4...

View full details
$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00
$1,266.94 - $1,266.94
$1,266.94
$1,266.94 - $1,266.94
$1,266.94

Askar SQA60 Pro 60mm f/4.6 Sextuplet APO

ASK-SQA60
2 in stock

60mm Aperture Sextuplet APO Optics 276mm Focal Length at a Fast f/4.6 44mm Full-Frame Corrected Image Circle Integrated Petzval Design with 2 SD G...

View full details
$1,266.94 - $1,266.94
$1,266.94
$1,266.94 - $1,266.94
$1,266.94
$1,595.00 - $1,595.00
$1,595.00
$1,595.00 - $1,595.00
$1,595.00

Askar SQA70 70mm f/4.8 Quintuplet APO

ASK-SQA70
1 in stock

70mm Aperture 336mm Focal Length f/4.8 Focal Ratio Quintuplet (5-Element) APO Petzval Optical Design 44mm Full-Frame Image Circle Contains Two ED ...

View full details
$1,595.00 - $1,595.00
$1,595.00
$1,595.00 - $1,595.00
$1,595.00
$2,395.00 - $2,395.00
$2,395.00
$2,395.00 - $2,395.00
$2,395.00

Askar SQA85 85mm f/4.8 Quintuplet APO

ASK-SQA85
1 in stock

85mm Aperture 408mm Focal Length (f/4.8) Quintuplet Petzval APO Optical Design Supports Full-Frame (44mm) Image Circle 3.64kg OTA Weight Descri...

View full details
$2,395.00 - $2,395.00
$2,395.00
$2,395.00 - $2,395.00
$2,395.00
$1,865.00 - $1,865.00
$1,865.00
$1,865.00 - $1,865.00
$1,865.00

Askar V 60/80mm Modular Telescope

ASK-ASKARV80

60mm Aperture Triplet Air-Spaced APO Objective 360mm Focal Length f/6 Native Focal Ratio Modular design supports optional 80mm objective lens Stan...

View full details
$1,865.00 - $1,865.00
$1,865.00
$1,865.00 - $1,865.00
$1,865.00
$4,499.00 - $4,499.00
$4,499.00
$4,499.00 - $4,499.00
$4,499.00

Celestron 11" RASA V2 OTA - CGE Dovetail

CEL-91076

279mm (11") Rowe-Ackermann Schmidt Astrograph Extremely fast f/2.2 focal ratio for short exposures 620mm focal length ideal for wide-field deep-sk...

View full details
$4,499.00 - $4,499.00
$4,499.00
$4,499.00 - $4,499.00
$4,499.00
$14,999.00 - $14,999.00
$14,999.00
$14,999.00 - $14,999.00
$14,999.00

Celestron 36 cm RASA OTA - CGE Dovetail

CEL-91078

355.6mm (14") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.2 focal ratio with 790mm focal length Covers a 60.1mm image circle, with a usable f...

View full details
$14,999.00 - $14,999.00
$14,999.00
$14,999.00 - $14,999.00
$14,999.00
$2,199.00 - $2,199.00
$2,199.00
$2,199.00 - $2,199.00
$2,199.00

Celestron 8” RASA OTA

CEL-91073
1 in stock

203mm (8") Rowe-Ackermann Schmidt Astrograph Incredibly fast 400mm f/2.0 optical system 22mm optimized image circle for sharp stars edge-to-edge U...

View full details
$2,199.00 - $2,199.00
$2,199.00
$2,199.00 - $2,199.00
$2,199.00
$3,300.00 - $3,300.00
$3,300.00
$3,300.00 - $3,300.00
$3,300.00

Celestron C11 OTA - CGE Dovetail

CEL-91036-XLT

279.4mm (11") Schmidt-Cassegrain Optical Tube Assembly 2800mm Focal Length at an f/10 Focal Ratio Resolving power of 0.42 arc seconds (Dawes Limit...

View full details
$3,300.00 - $3,300.00
$3,300.00
$3,300.00 - $3,300.00
$3,300.00
$6,800.00 - $6,800.00
$6,800.00
$6,800.00 - $6,800.00
$6,800.00

Celestron C14 OTA - CGE Dovetail

CEL-91038-XLT

355.5mm (14") Schmidt-Cassegrain Optical Tube Assembly 3910mm Focal Length at f/11 Dawes Limit Resolution of 0.33 Arc Seconds 2581x Light Gatherin...

View full details
$6,800.00 - $6,800.00
$6,800.00
$6,800.00 - $6,800.00
$6,800.00
$880.00 - $880.00
$880.00
$880.00 - $880.00
$880.00

Celestron C6 OTA - CG-5 Dovetail

CEL-91010-XLT

150mm (6") Schmidt-Cassegrain Optical Tube Assembly 1500mm Focal Length (f/10) StarBright XLT Optical Coatings Weighs Only 10 lbs (4.54 kg) CG-5 D...

View full details
$880.00 - $880.00
$880.00
$880.00 - $880.00
$880.00
$1,400.00 - $1,400.00
$1,400.00
$1,400.00 - $1,400.00
$1,400.00

Celestron C8 OTA - CGE Dovetail

CEL-91024-XLT

203.2mm (8") Schmidt-Cassegrain Optical Tube Assembly 2032mm Focal Length at a f/10 Focal Ratio StarBright XLT Optical Coatings for Maximum Transm...

View full details
$1,400.00 - $1,400.00
$1,400.00
$1,400.00 - $1,400.00
$1,400.00
$2,000.00 - $2,000.00
$2,000.00
$2,000.00 - $2,000.00
$2,000.00

Celestron C9.25 OTA - CGE Dovetail

CEL-91027-XLT

235mm (9.25") Schmidt-Cassegrain Optical Tube 2350mm Focal Length (f/10) StarBright XLT Optical Coatings Fastar-Compatible for f/2 Imaging 20 lb O...

View full details
$2,000.00 - $2,000.00
$2,000.00
$2,000.00 - $2,000.00
$2,000.00
Save 11% Save %
$4,499.00
$4,499.00 - $4,499.00
$4,499.00
$3,999.00
$3,999.00 - $3,999.00
$3,999.00

Celestron EdgeHD 11" OTA - CGE Dovetail

CEL-91050-XLT
1 in stock

279.4mm (11") EdgeHD Aplanatic Optics 2800mm Focal Length (f/10) 42mm Image Circle for Full-Frame Sensors StarBright XLT Optical Coatings 28 lb Op...

View full details
$4,499.00
$4,499.00 - $4,499.00
$4,499.00
$3,999.00
$3,999.00 - $3,999.00
$3,999.00
Save 11% Save %
Save 10% Save %
$7,699.00
$7,699.00 - $7,699.00
$7,699.00
$6,899.00
$6,899.00 - $6,899.00
$6,899.00

Celestron EdgeHD 14" OTA - CGE Dovetail

CEL-91060-XLT

14" (356mm) EdgeHD Aplanatic Schmidt-Cassegrain Optics 3910mm Focal Length at f/11 42mm Optimized Image Circle for Full-Frame Sensors StarBright X...

View full details
$7,699.00
$7,699.00 - $7,699.00
$7,699.00
$6,899.00
$6,899.00 - $6,899.00
$6,899.00
Save 10% Save %
Save 12% Save %
$1,699.00
$1,699.00 - $1,699.00
$1,699.00
$1,499.00
$1,499.00 - $1,499.00
$1,499.00

Celestron EdgeHD 8" OTA - CGE Dovetail

CEL-91030-XLT
2 in stock

203.2mm (8") EdgeHD Aplanatic Optics 2032mm Focal Length at f/10 42mm Optimized Image Circle StarBright XLT Optical Coatings Fastar/HyperStar Comp...

View full details
$1,699.00
$1,699.00 - $1,699.00
$1,699.00
$1,499.00
$1,499.00 - $1,499.00
$1,499.00
Save 12% Save %
Save 10% Save %
$3,099.00
$3,099.00 - $3,099.00
$3,099.00
$2,799.00
$2,799.00 - $2,799.00
$2,799.00

Celestron EdgeHD 9.25" OTA - CGE Dovetail

CEL-91040-XLT
1 in stock

234.95mm (9.25") EdgeHD Aplanatic Optics 2350mm Focal Length at f/10 Astrograph-quality 42mm Corrected Image Circle StarBright XLT Optical Coating...

View full details
$3,099.00
$3,099.00 - $3,099.00
$3,099.00
$2,799.00
$2,799.00 - $2,799.00
$2,799.00
Save 10% Save %
$1,699.00 - $1,699.00
$1,699.00
$1,699.00 - $1,699.00
$1,699.00

Celestron RASA 6" OTA

CEL-91071

152mm (5.98") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.2 focal ratio for extremely short exposures 335mm focal length ideal for wide-field...

View full details
$1,699.00 - $1,699.00
$1,699.00
$1,699.00 - $1,699.00
$1,699.00
Daystar 80mm f/6 Achromatic Refractor
$499.00 - $499.00
$499.00
$499.00 - $499.00
$499.00

Daystar 80mm f/6 Achromatic Refractor

DAY-480EUD

80mm Aperture f/6 Focal Ratio 480mm Focal Length Achromatic Refractor Design Rack & Pinion Focuser Description FAQ Specifications In the Bo...

View full details
$499.00 - $499.00
$499.00
$499.00 - $499.00
$499.00
Daystar 80mm f/6.25 ED APO Refractor
$799.00 - $799.00
$799.00
$799.00 - $799.00
$799.00

Daystar 80mm f/6.25 ED APO Refractor

DAY-500EUD

80mm Aperture 500mm Focal Length (f/6.25) Apochromatic ED Glass Optics 2" Rack & Pinion Hybrid Drive Focuser Includes 90mm White Light Solar F...

View full details
$799.00 - $799.00
$799.00
$799.00 - $799.00
$799.00
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99

Explore Scientific AR102 Doublet Refractor

ES-DAR102065-02
1 in stock

102mm (4-inch) Aperture f/6.5 Focal Ratio 11.5 lbs Optical Tube Weight Two-Speed 2" Crayford Focuser Includes 2" Dielectric Diagonal & 8x50 Fi...

View full details
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99
$749.99 - $749.99
$749.99
$749.99 - $749.99
$749.99

Explore Scientific AR127 Doublet Refractor

ES-DAR127065-02
1 in stock

127mm Achromatic Doublet Refractor Air-Spaced Crown-and-Flint Optics Dual-Speed Focuser for Fine Adjustment Dielectric-Coated Diagonal Included Cr...

View full details
$749.99 - $749.99
$749.99
$749.99 - $749.99
$749.99