1. On the other hand a refractor is more costly, and in some ways less convenient to use.

2. A three - inch refractor will give an excellent view as well as showing Titan.

3. A woman looks through a refractor telescope with a solar filter on top of the roof of a school in Hong Kong.

4. Ah, the refractor . It's quite possibly the perfect design for a telescope.

5. The path length refractor, however, can generate planar wavefronts over a wide operating band.

6. Galileo's instrument was a simple affair, a refractor telescope that had two lenses at the ends of two tubes, one of which slid into the other.

6. try its best to collect and build good sentences.

7. A rifle scope is a refractor telescope used on a rifle.

8. He began examining nearby galaxies with a 10-inch refractor to see whether any stars had flared up.

9. There are two types: the "obstacle array" and the "path length refractor. "

10. You have to wonder if the designers have ever actually been near a working refractor ...

11. The preconditioned fastest descent means in inversion achieves simultaneous in- versions of overlying-bed velocity and refractor depth.

12. In general you have to continuously test and evaluate you efforts, measure quality, learn, learn more and refractor for designing and building reusable and valuable services.

13. The data were processed by means of both finite difference inversion and refractor wavefront imaging technique in terms of Hagedoorn principle and the fine upper crustal structure was determined.

14. Reflectors work in a wider spectrum of light since certain wavelengths are absorbed when passing through glass elements like those found in a refractor or catadioptric.

15. Chromatic Aberration -- usually associated with objective lenses of refractor telescopes, is the failure of a lens to bring light of different wavelengths (colors) to a common focus.

16. At the same time, the corresponding black body temperatures, digital counts and the temperatures of major mirror, refractor mirror, secondary mirror and calibration mirror are detected.

17. I remember as a child seeing them through my small backyard refractor and it was unmistakable.

18. This expanding method just uses this considerarion to compute the influence of the surface, subtract the influence of the surface from the travel times and compute the velocities of refractor.