Celestron 11091 사용 설명서 - 페이지 11

{카테고리_이름} Celestron 11091에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Celestron 11091 20 페이지. Telescope and equatorial mount

Many of the methods of polar alignment require that you know how to find the celestial pole by identifying

stars in the area.

For those in the northern hemisphere, finding the celestial pole is not difficult.

Fortunately, we have a naked eye star less than a degree away. This star, Polaris, is the end star in the

handle of the Little Dipper. Since the Little Dipper (technically called Ursa Minor) is not one of the

brightest constellations in the sky, it may be difficult to locate, especially from urban areas. If this is the

case, use the two end stars in the bowl of the Big Dipper. Draw an imaginary line through them toward the

Little Dipper. They will point to Polaris. The position of the Big Dipper will change during the year and

throughout the course of the night. When the Big Dipper is low in the sky (i.e., near the horizon) it may be

difficult to locate.

To make finding and tracking the stars easier, a rough polar alignment is required.

The right ascension (polar) axis should be pointed towards the North Pole (see figure 9).

The equatorial mount should be level.

Set the latitude of the telescope to the latitude of your observing location by turning the azimuth

adjustment screws on the mount. The latitude of your observing location corresponds to the

altitude that Polaris will appear to be above the horizon. For example, If you are observing from

Los Angeles, which has a latitude of 34°, then the celestial pole (and Polaris) will be 34° above the

Figure 8

Figure 9