VIXEN SD Flattener HD Kit Telescope Accessory
The SD flattener HD kit is designed for a flat focal plane to produce crisp image of stars with the SD series of APO refractors. It consists of a high performance flattener lens and a connecing tube ring.
High performance flattener lens
The SD flattener HD lens improves off-axis image quality greatly with a minimum change of the focal length. It covers a 44mm photographic field in diameter that is sufficient for the full frame DSLR cameras.
Ultimate light transmission AS coatings for extremely high contrast images
The same anti-reflection AS coatings that are used for our high-end VSD100F3.8 renowned for extremely high light transmission (99.9% per surface) are provided on each of the lens surfaces of the SD flattener HD. Also, matte-finish is elaborate to eliminate internal reflections and loss of light completely.
Optional HD focal reducer
If combined with a Reducer HD sold optionally, the focal length will be reduced by 0.79 times (F.7.7 to F6.1) without diminishing the image circle of 44mm. A result is sharp image throughout the photographic field of view.
Example taken with a SD103S using the SD Flattener HD: M3 Globular Cluster.
Setup diagram
Brand: Vixen |
Code: VX37246
APN: 4955295372461 |
Supplier Code: 37246
Brand: Vixen |
Code: VX37246
APN: 4955295372461 |
Supplier Code: 37246
At a glance
The SD flattener HD kit is designed for a flat focal plane to produce crisp image of stars with the SD series of APO refractors. It consists of a high performance flattener lens and a connecing tube ring.
High performance flattener lensThe SD flattener HD lens improves off-axis image quality greatly with a minimum change of the focal length. It covers a 44mm photographic field in diameter that is sufficient for the full frame DSLR cameras. |
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Ultimate light transmission AS coatings for extremely high contrast imagesThe same anti-reflection AS coatings that are used for our high-end VSD100F3.8 renowned for extremely high light transmission (99.9% per surface) are provided on each of the lens surfaces of the SD flattener HD. Also, matte-finish is elaborate to eliminate internal reflections and loss of light completely. |
Optional HD focal reducerIf combined with a Reducer HD sold optionally, the focal length will be reduced by 0.79 times (F.7.7 to F6.1) without diminishing the image circle of 44mm. A result is sharp image throughout the photographic field of view. |
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Example taken with a SD103S using the SD Flattener HD: M3 Globular Cluster. |
Setup diagram |
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