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Istar Optical Phoenix WFT 204-6
Created one at a time and tested for best quality, the Istar Optical Refractors are not typical of your mass-produced telescopes on the market today. To ensure the best quality, these refractors are strenuously tested and the optics are manufactured with glass from brand name companies like Schott, OHara, and CDGM.
Eliminating unwanted inner objective glass reflections is made possible with a super flat black-edge masking that is produced in each Istar lens. As well, this masking also improves on resolution. Once completed, all Istar lenses are tested twice. In addition, a computer interferometer test is done as a full visual test in the field. In every Istar lens you will find a unique, engraved serial number that helps link to its set of reports. These reports are then sent to the buyer as well as the five year warranty information.
Unlike anything else on the market today, Istar provides a special lens cap that is shipped with each telescope. This particular lens cap enables the user to increase or decrease friction inside of the dew shield by simply tightening or loosening two silver bolts.
The production of each iStar telescopes optical tube assembly and dew shield are done in Austria. After this step they are then CNC machined and powder coated in the Czech Republic. A textured, matte black finish ensures a durability and allows for a definite grip when handling the tube.
Finishing out this IStar telescope in style is the included 2.5 dual speed, 360 degree rotatable focuser. The focuser is CNC machined of aircraft grade alloy. The included 2 and 1.25 adapters have brass compression rings.
Type: Achromatic Doublet
Number of Elements: 2
Lens Coating: Full Multi-Coated
Lens Diameter: 210mm
Clear Aperture: 204mm (5.9 inches)
Focal Length: 1200mm
Focal Ratio: f/5.9
OTA Length: 1220mm (including dew shield)
- Istar refractors features dual speed 2.5, fully rotatable Crayford focuser and includes a 2 & 1.25 b
- An Achromatic Doublet, the Phoenix WFT 204mm F/6 Wide Field Refractor OTA is a two element design fe
- Features a lens diameter of 210mm with a full 8 of clear aperture.
- Shorter focal ratio of f/5.9 and focal length of 1200mm.
- Comes with a five year warranty.
Phoenix 204 Refractor price, istar 204mm wft