OTA Sky-Watcher 150ED Evostar Double Speed ​​DS Refractor Telescope (150/1200) with accesories

Description

All about the Sky-Watcher Evostar 150ED telescope

Sky-Watcher offers a new large diameter model: the EvoStar 150ED within its range of apochromatic glasses. It is the brand's largest diameter ED refractor, aimed at hobbyists looking for a versatile instrument: both for planet and deep sky observation! Thanks to its focal length ratio of f / 8 it allows the practice of astrophotography. nebulae and galaxies will be the main targets. Its high optical quality, thanks to the good chromatic correction, will delight more than one fan. The Moon, Jupiter and Saturn will offer you an impressive sight, do not hesitate to use a high magnification on this instrument.A 150mm telescope collects 2.25 times more light compared to a 100mm refractor

To obtain the valuable "APO" qualifier, a refractor must correct for primary and secondary chromatic aberrations inherent in all systems whose light rays pass through an optical element. In the case of the Sky-Watcher Evostar 150ED, a doublet composed of an ED glass element reduces chromatism to significantly limit the appearance of colored edges on the planets or the Moon. The ED glass chosen, FPL-53 (Schott), is the most capable of correcting these defects thanks to a very low dispersion

The use of multilayer treatments on all surfaces considerably limits losses due to lens passing, making the Evostar 150ED brighter and more contrasting than conventional refractors that are less corrected. The "Metallic High-Transmission" (MHC) treatment is applied to the air glass surfaces, which guarantees impressive results (transmission close to 99.5%). Thanks to its medium focal length ratio, f / 8, the Sky-Watcher Evostar 150ED is particularly interesting for deep sky and planetary photography.

Deluxe version with Linear Power 11: 1 focuser

This Deluxe version is equipped with the same focuser as the high-quality Esprit Sky-Watcher range. To be coherent with the optics and to provide good results in astrophotography (where focus is paramount) the eyepiece holder is a heavy duty frame for larger sensors. With a 3 "(75mm) input format, the Linear Power (patented design) is robust and accurate thanks to an 11: 1 gear ratio.

The slide tube has a steel guide rail that runs on 4 large ball bearings, which provides great smoothness and prevents any change during focus. A set screw maintains focus depending on the orientation of the optical tube. The Linear Power also has a graduated scale on the slide tube so you can identify various positions depending on your equipment. Finally, it can be easily rotated, thanks to a rotating collar, without losing focus.

To meet the requirements of amateur astronomers, the optical tube is made entirely of aluminum. Plastic parts are not used! The solidity is and the aesthetics go hand in hand in this model. The interior is blackened and manufactured to limit stray light intrusion. A Kodak through screw is placed over one of the clamps to parallel adapt a camera.

Items delivered

1 Sky-Watcher EvoStar 150ED Deluxe optical tube

2 deluxe clamps

1 Losmandy dovetail

1 Crayford Linear Power Focuser 3 "1:11 Focuser

Hard case with pre-cut foam