Vixen Optics SDE72SS f/6 Apo Doublet Refractor Telescope - OTA Only

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- 72mm f/6 SD Apo optics for sharp, high-contrast views with minimal chromatic aberration
- Precision 10:1 dual-speed focuser for smooth focusing, with optional EAF compatibility
- Lightweight 5.5 lb design with a retractable dew shield for easy transportation
- Includes mounting hardware and accessories, plus a protective aluminum carrying case
Vixen Telescope SDE72SS Optical Tube
The Vixen SDE72SS is a lightweight SD apochromatic refractor designed to deliver sharp, high-contrast views for both visual astronomy and astrophotography. Featuring a 72mm aperture, 432mm focal length, and premium Super ED glass, this versatile telescope minimizes chromatic aberration for crisp stars, natural colors, and impressive optical performance.
Weighing just 5.5 lbs (2.5 kg) and featuring a retractable dew shield, precision 10:1 dual-speed focuser, and compatibility with the ZWO EAF system. Complete with mounting hardware, a 5x30 finder scope, an erect-image diagonal, and a protective aluminum carrying case, it's an excellent grab-and-go telescope for observing and imaging the night sky.


High-performance SD Lens Supressing Color Fringing
The objective lens uses SD (Super ED) glass, renowned for its superior optical performance among ED glasses. By suppressing chromatic aberration to an exceptional degree, it minimizes color fringing and delivers clear, sharp images of stars. This prevents the stars and the lunar limb from appearing purple, allowing them to be captured with true clarity and color.


Minimized Light Loss with Multi-Coatings
All optical surfaces of the lenses are multi-coated to minimize light reflection, reducing stray light and preserving contrast for exceptionally sharp and clear images.


Short Optical Tube Design
Weighing just 2.5 kg and featuring a retractable dew shield, it is extremely compact for storage, making grab-and-go and setup easy. It comes with a dovetail plate for quick attachment to and detachment from a mount. Compatible with both the Vixen dovetail and the thin-dovetail standards, it allows for easy switching of the optical tube between an equatorial mount and a camera platform.


Dual-speed Focuser
It comes standard with a dedicated dual-speed focuser, allowing both coarse and fine focus adjustments. The fine-focus reduction ratio is approximately 10:1, making it especially useful for the precise focusing required in astrophotography or high-magnification observing.
The ZWO EAF or equivalent can be attached, but is not included with this OTA purchase.


Extra Finder Bracket Shoe
In addition to the finder bracket shoe provided, an optional dovetail finder bracket shoe can be attached to the focuser or on top of the tube rings.
Specifications
-
Objective Design / Effective Aperture: 72mm SD Apochromat, multi-coated
-
Focal Length (Focal Ratio): 432mm (f/6.0)
-
Resolving Power / Limiting Magnitude: 1.61 arcseconds / 11.1 mag
-
Light Gathering Power: 106x unaided eye
-
Image Circle: 30mm (APS-C compatible with optional SDE Reducer)
-
Optical Tube Length: 307-365mm (12.1-14.4")
-
Optical Tube Diameter: 82mm (3.23")
-
Finder Scope: 5x30mm, 8° actual field of view
-
Focusing System: Rack-and-pinion with 10:1 dual-speed focuser
-
Accessory Threads / Size: Threaded: M63 x 1mm
-
Mounting Hardware: Tube rings and dual slide bar
-
Photography: Prime-focus and smartphone afocal imaging (optional camera adapters required)
-
Dimensions (W x D x H): 365 x 150 x 130mm (14.4 x 5.9 x 5.1")
-
Weight:
-
Optical tube assembly: 2.5 kg (5.5 lbs)
-
Main tube body: 2.2 kg (4.9 lbs)
-
Aluminum carrying case: 4 kg (8.8 lbs)
-
Spot Diagram




In combination with the dedicated SDE focal reducer, it quickly converts the telescope into a 346 mm (F4.8) telephoto lens for deep-sky imaging. Its short focal length makes it easy to handle, making it ideal for beginners in prime-focus astrophotography. It covers a 30 mm image circle, making it suitable for APS-C–size sensors or smaller.
Other Information
- Country of Manufacture: China
Vixen Telescope SDE72SS Optical Tube
The Vixen SDE72SS is a lightweight SD apochromatic refractor designed to deliver sharp, high-contrast views for both visual astronomy and astrophotography. Featuring a 72mm aperture, 432mm focal length, and premium Super ED glass, this versatile telescope minimizes chromatic aberration for crisp stars, natural colors, and impressive optical performance.
Weighing just 5.5 lbs (2.5 kg) and featuring a retractable dew shield, precision 10:1 dual-speed focuser, and compatibility with the ZWO EAF system. Complete with mounting hardware, a 5x30 finder scope, an erect-image diagonal, and a protective aluminum carrying case, it's an excellent grab-and-go telescope for observing and imaging the night sky.


High-performance SD Lens Supressing Color Fringing
The objective lens uses SD (Super ED) glass, renowned for its superior optical performance among ED glasses. By suppressing chromatic aberration to an exceptional degree, it minimizes color fringing and delivers clear, sharp images of stars. This prevents the stars and the lunar limb from appearing purple, allowing them to be captured with true clarity and color.


Minimized Light Loss with Multi-Coatings
All optical surfaces of the lenses are multi-coated to minimize light reflection, reducing stray light and preserving contrast for exceptionally sharp and clear images.


Short Optical Tube Design
Weighing just 2.5 kg and featuring a retractable dew shield, it is extremely compact for storage, making grab-and-go and setup easy. It comes with a dovetail plate for quick attachment to and detachment from a mount. Compatible with both the Vixen dovetail and the thin-dovetail standards, it allows for easy switching of the optical tube between an equatorial mount and a camera platform.


Dual-speed Focuser
It comes standard with a dedicated dual-speed focuser, allowing both coarse and fine focus adjustments. The fine-focus reduction ratio is approximately 10:1, making it especially useful for the precise focusing required in astrophotography or high-magnification observing.
The ZWO EAF or equivalent can be attached, but is not included with this OTA purchase.


Extra Finder Bracket Shoe
In addition to the finder bracket shoe provided, an optional dovetail finder bracket shoe can be attached to the focuser or on top of the tube rings.
Specifications
-
Objective Design / Effective Aperture: 72mm SD Apochromat, multi-coated
-
Focal Length (Focal Ratio): 432mm (f/6.0)
-
Resolving Power / Limiting Magnitude: 1.61 arcseconds / 11.1 mag
-
Light Gathering Power: 106x unaided eye
-
Image Circle: 30mm (APS-C compatible with optional SDE Reducer)
-
Optical Tube Length: 307-365mm (12.1-14.4")
-
Optical Tube Diameter: 82mm (3.23")
-
Finder Scope: 5x30mm, 8° actual field of view
-
Focusing System: Rack-and-pinion with 10:1 dual-speed focuser
-
Accessory Threads / Size: Threaded: M63 x 1mm
-
Mounting Hardware: Tube rings and dual slide bar
-
Photography: Prime-focus and smartphone afocal imaging (optional camera adapters required)
-
Dimensions (W x D x H): 365 x 150 x 130mm (14.4 x 5.9 x 5.1")
-
Weight:
-
Optical tube assembly: 2.5 kg (5.5 lbs)
-
Main tube body: 2.2 kg (4.9 lbs)
-
Aluminum carrying case: 4 kg (8.8 lbs)
-
Spot Diagram




In combination with the dedicated SDE focal reducer, it quickly converts the telescope into a 346 mm (F4.8) telephoto lens for deep-sky imaging. Its short focal length makes it easy to handle, making it ideal for beginners in prime-focus astrophotography. It covers a 30 mm image circle, making it suitable for APS-C–size sensors or smaller.
| Manufacturer | Vixen Optics |
|---|---|
| Telescope Focal Length | 401 - 500mm |
- 1x SDE72SS OTA
- 1x 5x30 Finderscope with Bracket
- 1x Erect Image Diagonal
- 1x Aluminum Case
- 72mm f/6 SD Apo optics for sharp, high-contrast views with minimal chromatic aberration
- Precision 10:1 dual-speed focuser for smooth focusing, with optional EAF compatibility
- Lightweight 5.5 lb design with a retractable dew shield for easy transportation
- Includes mounting hardware and accessories, plus a protective aluminum carrying case
Vixen Telescope SDE72SS Optical Tube
The Vixen SDE72SS is a lightweight SD apochromatic refractor designed to deliver sharp, high-contrast views for both visual astronomy and astrophotography. Featuring a 72mm aperture, 432mm focal length, and premium Super ED glass, this versatile telescope minimizes chromatic aberration for crisp stars, natural colors, and impressive optical performance.
Weighing just 5.5 lbs (2.5 kg) and featuring a retractable dew shield, precision 10:1 dual-speed focuser, and compatibility with the ZWO EAF system. Complete with mounting hardware, a 5x30 finder scope, an erect-image diagonal, and a protective aluminum carrying case, it's an excellent grab-and-go telescope for observing and imaging the night sky.


High-performance SD Lens Supressing Color Fringing
The objective lens uses SD (Super ED) glass, renowned for its superior optical performance among ED glasses. By suppressing chromatic aberration to an exceptional degree, it minimizes color fringing and delivers clear, sharp images of stars. This prevents the stars and the lunar limb from appearing purple, allowing them to be captured with true clarity and color.


Minimized Light Loss with Multi-Coatings
All optical surfaces of the lenses are multi-coated to minimize light reflection, reducing stray light and preserving contrast for exceptionally sharp and clear images.


Short Optical Tube Design
Weighing just 2.5 kg and featuring a retractable dew shield, it is extremely compact for storage, making grab-and-go and setup easy. It comes with a dovetail plate for quick attachment to and detachment from a mount. Compatible with both the Vixen dovetail and the thin-dovetail standards, it allows for easy switching of the optical tube between an equatorial mount and a camera platform.


Dual-speed Focuser
It comes standard with a dedicated dual-speed focuser, allowing both coarse and fine focus adjustments. The fine-focus reduction ratio is approximately 10:1, making it especially useful for the precise focusing required in astrophotography or high-magnification observing.
The ZWO EAF or equivalent can be attached, but is not included with this OTA purchase.


Extra Finder Bracket Shoe
In addition to the finder bracket shoe provided, an optional dovetail finder bracket shoe can be attached to the focuser or on top of the tube rings.
Specifications
-
Objective Design / Effective Aperture: 72mm SD Apochromat, multi-coated
-
Focal Length (Focal Ratio): 432mm (f/6.0)
-
Resolving Power / Limiting Magnitude: 1.61 arcseconds / 11.1 mag
-
Light Gathering Power: 106x unaided eye
-
Image Circle: 30mm (APS-C compatible with optional SDE Reducer)
-
Optical Tube Length: 307-365mm (12.1-14.4")
-
Optical Tube Diameter: 82mm (3.23")
-
Finder Scope: 5x30mm, 8° actual field of view
-
Focusing System: Rack-and-pinion with 10:1 dual-speed focuser
-
Accessory Threads / Size: Threaded: M63 x 1mm
-
Mounting Hardware: Tube rings and dual slide bar
-
Photography: Prime-focus and smartphone afocal imaging (optional camera adapters required)
-
Dimensions (W x D x H): 365 x 150 x 130mm (14.4 x 5.9 x 5.1")
-
Weight:
-
Optical tube assembly: 2.5 kg (5.5 lbs)
-
Main tube body: 2.2 kg (4.9 lbs)
-
Aluminum carrying case: 4 kg (8.8 lbs)
-
Spot Diagram




In combination with the dedicated SDE focal reducer, it quickly converts the telescope into a 346 mm (F4.8) telephoto lens for deep-sky imaging. Its short focal length makes it easy to handle, making it ideal for beginners in prime-focus astrophotography. It covers a 30 mm image circle, making it suitable for APS-C–size sensors or smaller.
Other Information
- Country of Manufacture: China
| Manufacturer | Vixen Optics |
|---|---|
| Telescope Focal Length | 401 - 500mm |
- 1x SDE72SS OTA
- 1x 5x30 Finderscope with Bracket
- 1x Erect Image Diagonal
- 1x Aluminum Case
