Tja, was soll man zu diesem Gerät sagen ? Werbeanzeigen sind ja häufig nicht sehr aussagefähig und dieses Gerät wird auch schon lange nicht mehr beworben, aber AstroPhysics war so nett, mir den Text einer alten Anzeige zur Verfügung zustellen und die sagt alles.
“The Christian STARFIRE 142mm (5.6inch) f7 Widefield Refractor is a fantasic new reflector that deliveres the uncompromising performance of the classic long focus instrument in a very compact and portable package. This telescope was designed on a challange to deliver the absolute highest possible image quality for lunar/planetary observing while still remaining a truly portable instrument. The result is not only a fine planetary telescope but also a superb deep sky instrument whit unlimited photographic possibilities.
The heart of the system is a new triplet lens design that virtually eliminates seondary color and higher order aberrations over the immense spectral range of 400nm to 700nm (from the U.V. to the infrared region). The lens design incorporates two spectral dispersion glasses that are matched to the hard crown front element. The result ist Fluorite - like performance without the termal limitations and high cost of Fluorite. The image quality, contrast and color correction is so good that it is hard to believe one is looking through a short focus refractor. Two models of the Starfire are now available:
142 mm (5.6 inch) f7 Widefield Refractor
178 mm (7.0 inch) f9 Planetary Refractor
The smaler instrument´s size is comparable to that of a modern 4-inch refractor, but with its 142mm (5.6 inch) aperture the light grap is more than twice that of the 4-inch scope. in sheer resolution and image quality even the 8”-10” catadioptrics will have a hard time equaling this refractor. Both telescopes can be used photographically without filters.”