Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while triple-baffles prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.
Using a doublet refractor instead of a triplet has some advantages: less glass means less weight, less weight means a less expensive telescope, so you can dedicate more money for your camera or laptop while benefiting from a lightweight astrophotography rig.
The Evostar 150DX comes in a foam-lined aluminum case with tube rings and a D-style dovetail plate. This DX version also includes a beefy 3.4" Helinear rack & pinion focuser.
- Doublet apochromatic optical design
- Two-element, air-spaced optical assembly minimizes false color
- 150mm aperture, 1200mm focal length, f/8 focal ratio
- 3.4" Helinear rack & pinion focuser
- Aluminum tube coated with glossy, black diamond metal-flake finish
- Included accessories: tube rings, D-style dovetail, and foam-lined aluminum case
Technical Specifications
| Optical Info |
|
|
| Optical Design |
ED Doublet |
| Lens Coatings |
Fully Multi-Coated |
| True Aperture (mm) |
150 |
| Primary Aperture (mm) |
150 |
| F/Ratio |
8 |
| Focal Length (mm) |
1200 |
| Observational Info |
|
|
| Dawes Limit |
0.77 |
| Rayleigh Limit |
0.93 |
| Limiting Mag. |
13.3 |
| Minimum Magnification |
21 |
| Maximum Magnification |
295 |
| Light Gathering (compared to next size down) |
71% |
| General Info |
|
|
| Focuser |
3.4" Dual Speed R & P |
| OTA Length (Retract/Ext.) |
50.5" |
| OTA Outer Diameter |
7.1" |
| OTA Weight (with accessories) |
22 |
| Accessories |
|
|
| Mounting Accessories |
Rings/D-Rail |
| Included Case |
Yes |
| Corrector |
No (optional) |
In the Box
Warranty & Manuals
Sky-Watcher 2-Year Warranty
