M
ENJOYING YOUR NEW TELESCOPE
8.
1. First determine your targeted object. Any bright object in the night sky is a good starting point.
One of the favorite starting points in astronomy is the moon. This is an object sure to please
any budding astronomer or experienced veteran. When you have developed proficiency at
this level, other objects become good targets. Saturn, Mars, Jupiter, and Venus are good
second steps to take.
2. The first thing you need to do after assembling the telescope as planned is center the desired
object in the finderscope’s cross hairs. Provided you did a reasonable job aligning the
finderscope, a quick look through the main telescope tube at low power should reveal the
same image. With the lowest power eyepiece (the one with the largest number printed on it)
you should be able to focus the same image that you saw through the finderscope. Avoid the
temptation to move directly to the highest power. The low power eyepiece will give you a
wider field of view, and brighter image—thus making it very easy to find your target object. At
this point with a focused image in both scopes, you’ve passed the first obstacle. If you don’t
see an image after attempting to focus it in, you might consider aligning your finderscope
again. Once you pass this step, you’ll will enjoy the time spent ensuring a good alignment.
Every object you center in the finderscope will be easily found in the main telescope tube,
which is important for continuing your exploration of the night sky.
3. The low power eyepieces are perfect for viewing the full moon, planets, star clusters, nebulae,
and even constellations. These should build your foundation. However, for more detail, try
bumping up in magnification to higher power eyepieces on some of these objects. During
calm and crisp nights, the light/dark separation line on the moon (called the "Terminator") is
marvelous at high power. You can see mountains, ridges and craters jump out at you due to
the highlights. Similarly, you can move up to higher magnifications on the planets and nebulae.
Star clusters and individual stars are best viewed through the low power no matter what.
4. The recurring astronomical theater we call the night sky is an ever-changing billboard. In other
words, the same movie does not play all the time. Rather, the positions of the stars change
not only hourly as they seem to rise and set, but also throughout the year. As the earth orbits
the sun our perspective on the stars changes on a yearly cycle about that orbit. The reason
the sky seems to move daily just as the sun and the moon "move" across our sky is that the
earth is rotating about its axis. As a result you may notice that after a few minutes or a few
seconds depending on what power you are viewing at, the objects in your telescope will move.
At higher magnifications especially, you will notice that the moon or Jupiter will "race" right out
of the field of view. To compensate, just move your telescope to "track" it in the necessary path.
