The Sky-Watcher 16" Dobsonian telescope is a giant light bucket! Peer deep into space, and see details and structure on galaxies, nebulae, and star clusters that smaller telescopes display as faint, fuzzy objects. Tackle objects that are elusive for most amateur astronomers, such as the Horsehead Nebula in Orion or M76 in Perseus. With a 16" mirror, you will have enough light grasp to see thousands of objects in the night sky…enough to keep you busy exploring for years to come!
Observing with a Dobsonian telescope is so low-tech and simple. Just swing your Sky-Watcher 16" to the quadrant of sky you want to search, and scan the vicinity. The included 9 x 50mm optical viewfinder provides both the magnification and light-gathering necessary to help narrow your search. The standard-equipment backlash-free 2" Crayford Focuser insures ultra smooth focusing adjustments, and the multi-coated, 4-element Plossl eyepieces (25mm and 10mm) provide a spacious 52º apparent field of view.
To ensure mechanical ease-of-use, Sky-Watcher USA uses a high-performance Teflon bearing system in both axes, combined with tension adjustment in altitude to facilitate setting the appropriate amount of friction, assuring smooth vertical and horizontal manual movement without free-play from small bumps or gusts of wind. This also eliminates the need to have a balanced optical tube as in an equatorial mount. Sky-Watcher's Teflon bearing system is preferable to the use of ball-bearings. Ball-bearings make unintended movement of the optical tube more difficult to control. Fortunately, at low power, deep-space objects leisurely drift through the field of the Sky-Watcher 16" Dob, so constant mechanical adjustment of the telescope's orientation isn't needed to keep objects in the field of view.
One of the major highlights of a Sky-Watcher Dobsonian is the revolutionary truss-support design that allows the optical tube's front and back cells to collapse together. This one piece, low-hassle OTA design is mechanically simple and results in large aperture telescopes that can be reasonably handled and transported by one individual. This innovation gives Sky-Watcher users tremendous functional ease-of-transportability.
Skywatcher 16" Dobsonian Telescope Highlights…
16" (406 mm) Dobsonian-style Newtonian
1800 mm focal length (f/4.4)
2" Crayford-style focuser with 1.25" adapter
4-element Plössl 25 mm and 10 mm 1.25" eyepieces
9x50 straight through finderscope
Solid rocker-mount with Teflon bearings and tension clutch for altitude
Could I see the entire Andromeda Galaxy without photography with this Skywatcher 16" Dobsonian telescope? What eyepiece should I use with it?
Question by: scott on Aug 25, 2016 4:09:00 PM
Depending on how dark your skies are, you can certainly see most of it. You will want an eyepiece to get you as close to a 7mm exit pupil as possible (30-32mm focal length) with a very wide field of view (68-82 degree AFOV), and you will likely want a coma corrector to give you the tightest stars across the whole field.
The widest possible 2" eyepiece will show you just over 1.5 degrees of sky, or around 1.3 degrees with most coma correctors. Under magnitude 7+ skies, Andromeda appears approximately 3 degrees across, so you will need to move the eyepiece around a bit to see the whole thing.
Answer by: Chris Hendren (Admin) on Aug 30, 2016 5:00:00 PM