Assessments - 4, GPA: 3.8
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Facilidade de uso
This will help to familiarize you with your telescope, thus making it easier to use at night. Daytime Observing 1. Find a distant object that is fairly bright. 2. Insert the standard 20mm eyepiece into the diagonal. 3. Locate the object in the finderscope. 4. Use the slow motion knobs to center the object in the field of the finder. 5. Look through the main optics and the object will be there (if you aligned the Star Pointer first). Try using different optional eyepieces to see how the field changes with various magnifications. NEVER POINT YOUR TELESCOPE AT THE SUN UNLESS YOU HAVE THE PROPER SOLAR FILTER. PERMANENT AND IRREVERSIBLE EYE DAMAGE MAY RESULT AS WELL AS DAMAGE TO YOUR TELESCOPE. ALSO, NEVERLEAVEYOURTELESCOPEUNATTENDED DURING ADAYTIME OBSERVING SESSION, ESPECIALLY WHEN CHILDREN ARE PRESENT. r 11 WARNING! Observing the Sun, Moon, and Planets Observing Deep-Sky Objects Although overlooked by many amateur astronomers, solar observation is both rewarding and fun. However, because the Sun is so bright, special precautions must be taken when observing our star so as not to damage your eyes or your telescope. Never project an image of the Sun through the telescope. Tremendous heat build-up near the back of the telescope can damage any accessories attached to the telescope. Use a Celestron solar filter to view the Sun in complete safety. These filters reduce the intensity of the Sun’s light making it safe to view. With these filters you can see sunspots as they move across the solar disk and faculae, which are bright patches seen near the Sun’s edge. Do not look through the Star Pointer finderscope while pointed towards the Sun. Instead, look at the ground at the shadow cast by the finder and position the telescope until the shadows are concentric. In the night sky, the Moon is a prime target for your first look because it is extremely bright. Often, it is a temptation to look at the Moon when it is full. At this time, the face we see is fully illuminated and its light can be overpowering. In addition, little or no contrast can be seen at this time. One of the best times to observe the Moon is during its partial phases (around the time of first or third quarter). Long shadows reveal a great amount of detail on the lunar surface. At low power you will be able to see the entire lunar disk at one time. Change to higher power (magnification) to focus in on a smaller area. Keep in mind that the rotation of the Earth will cause the Moon to drift out of your field of view. You will have to manually adjust the telescope to keep the Moon centered. This effect is more noticeable at higher power. Consult your local newspaper or current astronomy magazine to find out when the Moon is visible. This same method can be used to observe the planets. You can see Venus go through its lunar-like phases. Mars will reveal a host of surface detail and one, if not both, of its polar caps. You will be able to see the cloud belts of Jupiter and the great Red Spot. In addition, you will also be able to see the Moons of Jupiter as they orbit this gas giant. Saturn with its beautiful rings is easily visible at moderate power. All you need to know is where to look. Most astronomy publications tell where the planets can be found in the sky each month. Deep-sky objects are simply those objects outside the boundaries of our solar system. They include star clusters, planetary nebulae, diffuse nebulae, double stars and other galaxies outside our own Milky Way. The Celestron Sky Maps (#93722) can help you locate the brightest deep-sky objects. You can “star hop” to an object from an area with which you are familiar. Most deep-sky objects have a large angular size. Therefore, low-to-moderate power is all you need to see them. Visually, they are too faint to reveal any color. Instead, they have a black and white appearance. And, because of their low surface brightness, they should be observed from a dark sky location. Light pollution around large urban areas washes out most nebula making them difficult, if not impossible, to observe. LPR filters enhance deep ^ky viewing from light polluted areas by blocking unwanted light while transmitting light from certain deep-sky objects. You can, on the other hand, observe planets and stars from light polluted areas or when the Moon is out. 12 Photographing the Moon Your Celestron can be used for both terrestrial and astronomical photography. You can use your telescope as a high power telephoto lens with the use of the optional T-Adapter. The Firstscope can also be used as a stable mount by attaching a camera to the photo adapter screw on the top of the tube ring. Celestron telescopes have fixed apertures and, as a result, fixed f/ratios. To properly expose your subjects photographically you need to set your shutter speed accordingly. Most 35mm cameras offer through-the-lens metering which will let you know if your picture will be under or over exposed. This is more of a considera...
Este manual também é adequado para os modelos :Instrumentos ópticos - 21013 (1.43 mb)