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Home > Glossary > Telescopes > General > Series > CT Ultra

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Telescopes General Series CT Ultra

Carbon-fibre Newtonian telescopes, versatile, especially for astrophotography.

The CT Ultra series offers Newtonian telescopes with different apertures and focal lengths, which are equipped with a carbon-fibre tube.
The CT Ultra Newton’s primary mirror has a surface precision of 1/10th lambda (peak-to-valley) and a high 97% reflectivity thanks to a Hilux coating. Each telescope is supplied with an exact optical specification and a ZYGO interferometer.

Telescopes that meet high expectations, especially for astrophotographers!

Standard or long tube?

The telescopes in this series have a short focal length. They are therefore very suitable for faint deep sky object astrophotography, where a fast optic allows shorter exposure times.

Most models in the series also have a variant with a somewhat longer focal length, which is indicated by an L in the product name. The longer version has a longer focal length. This makes the optic a little less fast (slightly longer exposure time), but allows higher levels of magnification, which has an especially positive effect on the observation and photography of the Moon, planets and nebulae.

18.08.2022


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