Teleskop Service (TS) has been developing a wide variety of astrographs and apochromatic refractors for photography and visual use with great success for many years. There are a large number of different apertures and designs available to you, there is hardly anything left to be desired!
The apochromatic refractor with 130 mm aperture and 910 mm focal length offers an image free of chromatic aberration and also allows astrophotography with all common correctors.