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Add to Wish List Compare this ProductApochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system. The high-end Evostar-150ED Apo doublet features an undisclosed combination of one Extra-Low Dispersion (ED) glass element and a matched crown element. Each air-to-glass objective lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light throughput of approaching 99.5%.
The proprietary Sky-Watcher “Metallic High-Transmission Coatings” (MHC) is the finest photon anti-rejection coatings in their class. A matching 0.85x Focal Reducer/Corrector is available separately for this product, as well as Deluxe Machined Aluminium Tube Rings and 75mm Dovetail Bar. The Evostar-150ED is supplied without eyepiece, finder scope, and star diagonal.
| Optics | |
|---|---|
| Type: | Refractor |
| Type of build: | Apochromatic |
| Aperture (mm): | 150 |
| Focal length (mm): | 1200 |
| Focal ratio: | F/8 |
| Max. useful magnification: | 300 x |
| Light gathering capacity: | 460 x |
| Resolving capacity: | 0.92 |
| Limiting stellar magnitude (mag): | 12.7 |
| Focuser: | 2" Crayford |
| Tube length (mm): | 1280 |
| General | |
| Series: | EvoStar |
| Tube weight (kg): | 9.5 |
| Included accessories | |
| Case: | Yes |
| Recommended for: | |
| Beginners: | No |
| Intermediate: | Yes |
| Advanced: | Yes |
| Area of application | |
| Nature observation: | No |
| Moon & planets: | Yes |
| Nebula & galaxies | Yes |
| Astrophotography: | Yes |
| Sun: | No (only with appropriate Sun filter) |
