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High-performance flattener and reducer set connection rings for Vixen telescopes SD81S, SD103S and SD115S, as well as the ED predecessor series.
High-performance flattener and reducer set
The kit consists of a high-performance flattener, a reducer for reducing the focal length, and connection rings (distance ring SD81, EX Tube 66), which were developed for prime-focus astrophotography with the SD81S, SD103S and SD115S telescopes.
The flattener and the 0.79x reducer deliver a significant increase in telescope performance and image quality.
You obtain a flat and sharp image until the edges, including with a full-frame DSLR camera.
Ultra-sharp image over the entire field of view of the DSLR full-frame sensor
The SD flattener improves the image quality to the edge of the field of view without changing the original focal length of the telescope.
The field of view of the DSLR camera with a full-frame sensor is fully illuminated (44 mm), ensuring that stars appear sharp until the edges of the image.
When used in conjunction with the Reducer HD, the focal length is reduced by a factor of 0.79 (f/7.7→6.1) whilst maintaining the 44 mm illumination.
High-contrast AS coating
The anti-reflex AS coating, which is also used on our high-end VSD 100 f/3.8 astrograph, delivers a high light transmission of 99.9% per lens surface. Loss of light, ghosting and scattered light images are virtually eliminated thanks to the completely matte interior coating.
FEATURES
DELIVERY CONTENT
High-performance flattener and reducer set
The kit consists of a high-performance flattener, a reducer for reducing the focal length, and connection rings (distance ring SD81, EX Tube 66), which were developed for prime-focus astrophotography with the SD81S, SD103S and SD115S telescopes.
The flattener and the 0.79x reducer deliver a significant increase in telescope performance and image quality.
You obtain a flat and sharp image until the edges, including with a full-frame DSLR camera.
Ultra-sharp image over the entire field of view of the DSLR full-frame sensor
The SD flattener improves the image quality to the edge of the field of view without changing the original focal length of the telescope.
The field of view of the DSLR camera with a full-frame sensor is fully illuminated (44 mm), ensuring that stars appear sharp until the edges of the image.
When used in conjunction with the Reducer HD, the focal length is reduced by a factor of 0.79 (f/7.7→6.1) whilst maintaining the 44 mm illumination.
High-contrast AS coating
The anti-reflex AS coating, which is also used on our high-end VSD 100 f/3.8 astrograph, delivers a high light transmission of 99.9% per lens surface. Loss of light, ghosting and scattered light images are virtually eliminated thanks to the completely matte interior coating.
FEATURES
- Reduces the focal length by a factor of 0.79
- Designed for full-frame cameras
- High-contrast AS coating
- Ultra-sharp image over the entire field of view
- Designed for full-frame DSLR cameras
- Illumination: 44 mm
- Correct distance to chip: 63.5 mm
- Designed for the SD81S, SD103S and SD115S
- Also suitable for the ED81S, ED103S and ED 115S
DELIVERY CONTENT
- SD Flattener HD
- Reducer HD
- Adapter ring for SD81
- 66 mm EX extension tube
- Dust caps
Technical Data
| Product family | |
|---|---|
| Product Family | Refractor telescope |
| GENERAL TECHNICAL DATA | |
| Colour | black |
| Material | Aluminium |
Technical Data
| Product family | |
|---|---|
| Product Family | Refractor telescope |
| GENERAL TECHNICAL DATA | |
| Colour | black |
| Material | Aluminium |
Product reviews
Vixen SD Reducer HD Kit
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