Sky-Watcher 150/750 Dual Speed Telescope on HEQ5 Pro-Go-To
Everything you need to know about the Newton Sky-Watcher 150mm f/5
With a 150mm primary mirror, the Sky-Watcher Newton 150 collects 73% more light than a 114mm telescope . Under a very dark sky, it is then possible to see many sky objects that are barely distinguishable in smaller diameter instruments. It promises beginners many discoveries . In planetary observation, it will reveal many details on Jupiter, Saturn and the Moon
Its Newton design offers several advantages compared to other families of instruments (Cassegrain glasses and telescopes). The manufacture of mirrors is more economical for the same diameter and its average focal length (750 mm) is very versatile. You then benefit, for an attractive budget, from a luminous telescope which provides a diverse field of observations .
Unlike very cheap manufacturing or small diameter Newton telescopes, the 150, 200, 254 and 300mm Newton Sky-Watchers have a parabolic primary mirror . The mirrors are spherically polished then recut to achieve a paraboloidal shape (more expensive and difficult to obtain). This is an essential selection criterion for instruments above 130mm and with short f/D .
Focusing is achieved via a bi-flowing Crayford eyepiece. It allows you to obtain fine focus thanks to the 1:10 reduction . A very appreciable plus during observations at high magnifications and in imaging. It can support heavy loads (e.g. APN) . A 31.75mm adapter is supplied as standard to use eyepieces of the same format from the 50.8mm output. A tightening screw located at the bottom of the eyepiece holder allows you to maintain focus following the orientation of the optical tube.Principle of the Sky-Watcher Dual Speed 10:1 parabolic mirror and focuser
To present the smallest possible obstruction, the secondary mirror mounting support (plane) has 4 thin branches , with a width of 0.5mm. Sufficiently rigid, they limit diffraction peaks on bright stars and excessive loss of luminosity. A 6x30 achromatic finderscope on its support is also delivered as standard, as well as a 28mm LET eyepiece (55°) for low magnification (wide field) observations. To be completed with a short focal length eyepiece for planetary observations at high magnifications.
Everything you need to know about the Sky-Watcher HEQ5 mount
"Light" version of the imposing NEQ6 Pro mount, the HEQ5 Pro is intended for amateurs and beginners looking for a transportable and attractive GOTO mount in terms of price . Tracking quality is improved with the Pro Series compared to previous versions without auto-pointing. It is possible for you to undertake long exposure astrophotography sessions on the less bright objects. An autoguiding port is even provided as standard to significantly improve the periodic error in right ascension.
The HEQ5 Pro is a very attractive solution for supporting numerous telescopes up to 235mm in diameter. It allows the beginner to get started with imaging , using a PC and a second parallel instrument when autoguiding is activated. The visual observer will appreciate the Go-To SynScan automatic pointing system delivered via an easy-to-use hand controller . Indeed, there is no need to know the position of stars or distant bodies in the deep sky, the HEQ5 Pro is responsible for moving the instrument towards the target you wish to observe.
Automated Go-To Time Attendance System
After calibration (setting up) with the polar finder on the Polar Star, select the alignment of the mount on one, two or three stars. More than 49,200 objects including the main catalogs are recorded in the database (Messier, NGC, IC as well as the planets, the Moon and the Sun). For maximum comfort, the mount moves quickly, up to 3.4°/sec via the control pad. Simple to use, it helps to quickly direct the instrument towards any galaxies, nebulae, clusters or objects in the solar system. Discover in detail the famous Andromeda galaxy, the fabulous draperies surrounding the heart of Orion, the Hercules cluster M13 and its heart rich in thousands of stars. Saturn, Jupiter and the Moon are also wonders to be examined without moderation.
The indication in the racket of the date, time and observation location combined with the "Tour" function allows the HEQ5 Pro mount to be pointed at the most interesting objects throughout the evening . Treat yourself to a guided tour of the sky at your observation location by clicking on the “Enter” button according to the object presented in a drop-down list. The pointing accuracy can go up to 1 minute of arc by compensating for mechanical errors of the mount . This procedure called "Backlash" requires measuring the time between two opposite movements of the mount. The operation is simple to carry out and, especially in astrophotography, saves precious time. The object you want to photograph is generally in the center of the sensor... a real pleasure!