What mount do I need for the Sky-Watcher Evostar 100EDX?
The optical tube weighs 5.5 kg (12.1 lb) and comes with a 45 mm Vixen-style dovetail bar, so choose a mount with a Vixen-style saddle and a payload rating that covers the tube plus your camera and accessories.
What changed on the Evostar 100EDX from the older Evostar 100ED model?
The Evostar 100EDX has several upgrades. The optical design was changed from f/9 to a faster f/7. Mechanically, it adds an enlarged 2.8-inch indexed drawtube with a built-in 360° rotatable adaptor, a retractable dew shield, and a carrying handle.
What does the Ohara FPL-53 element in the Evostar 100EDX do?
It is the ED glass element in the doublet objective, used to control chromatic aberration.
What accessories do I need to start observing with the Evostar 100EDX?
A 2-inch star diagonal, at least one eyepiece and a finderscope: Sky-Watcher supplies the telescope without them. The finder shoe takes all Sky-Watcher finderscopes, and a 2-inch to 1.25-inch adapter is included.
Is there a specific reducer/flattener for imaging with the Evostar 100EDX?
Yes. Sky-Watcher offers an optional, optically matched 0.92x focal reducer/field flattener (code 20332). With it, the image height is 40 mm.
What is the highest practical power of the Evostar 100EDX?
The highest practical power is 300x.
What is the advantage of the Evostar 100EDX's doublet design over a triplet?
Doublets, with less glass, are usually lighter and more convenient to handle than a triplet of the same aperture. The 100EDX tube weighs 5.5 kg (12.1 lb).
Can I use both 2-inch and 1.25-inch eyepieces with the Evostar 100EDX?
Yes. The telescope features a 2-inch focuser for use with wide-field 2-inch eyepieces and diagonals. It also includes a 2-inch to 1.25-inch adapter, allowing you to use the more common 1.25-inch format accessories as well.
What does the 360° rotatable adaptor on the Evostar 100EDX's focuser do?
It is built into the 2.8-inch drawtube and lets you turn the camera or diagonal.
How long and heavy is the tube?
5.5 kg (12.1 lb), 570 mm with the dew shield retracted and 675 mm extended. An aluminum carrying case is supplied.
