Istar Optical Refractor Highlights…
Unlike so many mass-produced telescopes on the market today, refractors from Istar Optical are created one at a time and then strenuously tested to insure the best quality possible. The optics are manufactured with glass from brand name companies like O'Hara, Schott, and CDGM.
Each Istar lens is produced with a super flat black-edge masking that eliminates unwanted inner objective glass reflections while improving on resolution. Once completed, all IStar lenses are tested twice. A computer interferometer test is done as well as a full visual test out under the stars. Every lens is engraved with its own serial number, and that number is linked to its set of reports, which are sent to the buyer along with warranty information (5 years).
A special lens cap is shipped with each telescope that will allow the user to increase or decrease the friction inside of the dew shield by simply loosening or tightening two silver bolts. It is unlike anything else on the market today.
The optical tube assembly and dew shield for each iStar telescope are produced in Austria and then CNC machined and powder coated in the Czech Republic. The finish of choice is matte black. The textured finish is durable and allows for a sure grip when handling the tube.
Finally, Istar provides a 2.5" 360 degree rotatable rack & pinion focuser from William Optics to finish off your telescope in style. This focuser features two locking screws at angled positions for heavy payload operations as well as a luxuriously smooth dual speed microfocuser, Digital Display Gauge (DDG), 2" to 1.25" adapter, and a thermometer integrated into the focuser knob! Draw tube travel is 3.1" and the whole thing weighs only 3.3 lbs.
Istar Optical Perseus AT 150mm F/10 Refractor Telescope Features
- Type: Achromatic Doublet
- Number of Elements: 2
- Lens Diameter: 154 mm
- Clear Aperture: 150 mm (6 inches)
- Focal Length: 1500mm
- Focal Ratio: f/10
- Lens Coating: Full Multi-Coated
- OTA Weight: 13.10 kg (28.8 lbs.)
- Additional Information
SKU IS-AT150-10 Manufacturer Istar Telescope Series iStar Perseus Optical Design Refractor - Achromatic Mount Type None - Optical Tube Only Warranty 5 Year Warranty Telescope Aperture 6" Telescope Focal Length 1500mm Telescope Focal Ratio f/10 Optical Coatings Fully Multi-Coated Highest Useful Magnification Not supplied by manufacturer Limiting Stellar Magnitude Not supplied by manufacturer Dew Shield Included? Yes Optical Tube Outer Diameter Not supplied by manufacturer Optical Tube Weight 28.8 lbs. Length of Optical Tube 1479mm Total Telescope Weight Not supplied by manufacturer OTA Mount Type N/A Diagonal Included? No - Sold Separately Focuser Size 2.5" Focuser Style Rack & Pinion Focusing Speeds Two-Speed Finder Included None Eyepiece(s) Included None
- Included Items
- Istar Perseus AT 150mm F/10 Refractor
- Special Lens Cap
- 2" Adapter
- 1.25" Adapter
- Interferometer Test Results
- Visual Test Results
- William Optics 2.5" Rack & Pinion Focuser w/ DDG
- Questions & Answers
Product QuestionsQuestion by: redmark62 on Aug 5, 2014 11:56:41 AMThe Perseus 150mm f/10 refractor is a standard achromat design, so it will have less CA than an f/8 version but more than an f/12 version. This is not the same as the "R30" or "R35" reduced CA designs, but it will have less haloing than competing shorter f/ratio designs.Answer by: Chris (Admin) on Aug 5, 2014 12:13:32 PM
- Support / Downloads