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(g)Put a low power eyepiece in the telescope. At low power (about
50 magnification), you will be able to see the entire lunar disk at
one time.
(NoteOOne of the best times to observe the Moon is during its partial
phases. Long shadows reveal a great amount of detail on the lunar
surface.
3
)If you later desire a close-up of a lunar region, use a higher power
eyepiece.
®Keep in mind that the rotation of the earth will cause the Moon
to drift out of the field of view. You will have to manually adjust
the telescope using the R. A. and Decl. slow-motion control knobs
to keep the Moon centered. This effect will be more noticeable at
higher power.
| Step 71 Your first observation—the Moon !
Now, you are ready to point the telescope toward celestial objects! Although observation may start with any celestial object, it is
advisable to start with the brightest objects first and work your way to fainter ones. Here is a good beginner s viewing order.
1. Moon
2. Jupiter
3. Saturn
4. Sun (with proper filter)
5. Venus
6. Mars
7. Mercury
8. Multiple Stars
9. Nebulae and Star Clusters
Now, let's look at the Moon.
®Locate the Moon in the finderscope and center it on the
crosshairs.
SHow to use a Moon Filter!
If you find that the lunar image is too bright for comfortable
viewing, attach a moon filter to the eyepiece. It will reduce the
brightness and, atthe same time, increase contrast on the lunar
surface.
How to use a Diagonal Prism!
A diagonal prism lets you view objects at a right-angle (90 ) from
the direction where the refractor telescope is pointing, thereby
allowing comfortable viewing when the telescope is pointed at
or near the zenith (directly overhead). Newtonian reflectors do
not require such a diagonal prism since objects are always viewed
from the side of the main tube of the telescope.
Eyepiece 9H
CNote) The resulting image
BMI
is right-side-up, but reversed
j=|
left-to-right.
Diagonal Prism
1-Eyepiece Adapter
(Not usable on Newtonian reflectors)
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