SkyWatcher Evostar 100EDX: 100 mm ED apochromat for visual observing and astrophotography
The Evostar 100EDX is a 100 mm ED doublet refractor with a 700 mm focal length and f/7 ratio. Its apochromatic objective includes an ED element made from Ohara FPL-53 glass and Sky-Watcher MHTC multi-coatings. The EDX model pairs the optics with mechanical updates for visual use and imaging.
The large 2.8-inch drawtube has a scale and a 360-degree rotation adapter. The 11:1 dual-speed Crayford focuser supports both quick and fine focus adjustment. The dew shield retracts, and a handle on the tube rings helps with carrying and positioning the optical tube.
Optical specifications
| Optical system | Apochromatic ED doublet refractor |
|---|---|
| Aperture | 100 mm |
| Focal length | 700 mm |
| Focal ratio | f/7 |
| Objective | ED element made from Ohara FPL-53 glass |
| Coatings | MHTC multi-coatings |
| Practical maximum magnification | 200x according to the manufacturer |
Focuser and tube
| Focuser | 2-inch dual-speed Crayford, 11:1 reduction |
|---|---|
| Drawtube | 2.8 inches with scale |
| Rotation adapter | 360-degree rotation |
| Eyepiece fitting | 2 inches |
| Dew shield | Retractable |
| Finder shoe | Compatible with Sky-Watcher finders |
| Dovetail bar | 45 mm |
| Tube material | Aluminium with internal baffles |
| Tube length | 570 mm with dew shield retracted; 675 mm extended |
| Tube weight | Approx. 5.5 kg |
Included
The package contains the Evostar-100EDX optical tube, tube rings with handle, a 45 mm dovetail bar and an aluminium carrying case. Eyepieces, diagonal, finder and mount are not included.
An optional 0.92x reducer/field flattener, model 20332, is available for astrophotography; it is sold separately.
Shipping information
| Shipping weight | 13 kg |
|---|---|
| Shipping dimensions | 104 × 39 × 29 cm |
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