Sky-Watcher EvoStar 90 AZ3
The Sky-watcher EVOSTAR series are two-element, air-spaced, multi-coated objective achromatic refractors. Manufactured to extremely high standards of optical and mechanical precision
90mm (3.5") f/900 REFRACTOR TELESCOPE
Skywatcher supplied product information -
With their long focal lengths and breathtaking, diffraction limited optical performance, they are ideal for the detailed high-power study of the Moon, Planetary Surfaces and other objects in our solar system, giving crisp contrast images. These telescope packages will stand you in great stead for a lifetime of serious astronomical viewing. Tube Material: Aluminium
Magnifications (with eyepieces supplied): x36 & x90
Highest Practical Power (Potential): x180
Objective Lens Diameter: 90mm
Telescope Focal Length: 900mm (f/10)
45º Erect Image Diagonal 1.25"
Multi-Coated Objective Lens
AZ3 Deluxe Alt-Azimuth Mount
Aluminium Tripod with Accessory Tray
65% more Light Gathering than 70mm
Economic way of owning a simple non-powered small aperture alt-az casual astronomical telescope. An ideal white light solar refractor by adding some Baader Astrosolar over the front aperture. A low cost instrument for schools to purchase for science project solar observing. Can be used successfully as a terrestrial spotting scope during the day from a home with a view.
Budget for an A4 sheet of Baader Astrosolar and a weak sky pollution filter such as the Baader Neodymium 1.25 filter. Budget also for a 1.25" Baader polarizing set or a 1.25" Neutral density filter for the moon.
- Optical Design
- 3.5 inch
- Mount Type
- Focal Length
- 900 mm
- Focal Ratio
- Optical Coatings
- Multi Coated