Vixen SD-Reducer-HD-Kit Reducer and flattener

Vixen SD Reducer HD Kit - Reducer and Flattener

The Vixen SD Reducer HD Kit enables an ultra-sharp image over the entire field of view of the DSLR full-frame camera and includes reducer and flattener for demanding photographers.

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 reducedto 0.79 times its original value (f/7.7 becomes f/6.1) whilst maintaining the 44 mm illumination allowing you to continue using the full-frame sensor.

High-contrast AS coating
The anti-reflex AS coating, which is also used on Vixen´s 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.

Note: You will need a Wide Photo Adapter and possibly a T2 ring, both not included.

Manual from the manufacturer
You can find a manual here.

Possible combinations



Drawings with dimensions and thread sizes



Overview of the different telescope/flattener/reducer combinations

Safety informations: PDF Download