580490

Celestron AstroMaster LT 70AZ Manual

14
Zoom out
Zoom in
Previous page
1/25
Next page
MOTION OF THE STARS
The daily motion of the Sun across the sky is
familiar to even the most casual observer. This
daily trek is not the Sun moving as early astrono-
mers thought, but the result of the Earth’s rota-
tion. The Earth’s rotation also causes the stars
to do the same, scribing out a large circle as the
Earth completes one rotation. The size of the
circular path a star follows depends on where
it is in the sky. Stars near the celestial equator
form the largest circles rising in the east and set-
ting in the west. Moving toward the north ce-
lestial pole, the point around which the stars in
the northern hemisphere appear to rotate, these
circles become smaller. Stars in the mid-celes-
tial latitudes rise in the northeast and set in the
northwest. Stars at high celestial latitudes are
always above the horizon, and are said to be cir-
cumpolar because they never rise and never set.
You will never see the stars complete one circle
because the sunlight during the day washes out
the starlight. However, part of this circular mo-
tion of stars in this region of the sky can be seen
by setting up a camera on a tripod and opening
the shutter for a couple hours. The timed expo-
sure will reveal semicircles that revolve around
the pole. (This description of stellar motions also
applies to the southern hemisphere except all
stars south of the celestial equator move around
the south celestial pole.)
14
Figure 4-2
All stars appear to rotate around the celestial poles. How-
ever, the appearance of this motion varies depending on
where you are looking in the sky. Near the north celestial
pole the stars scribe out recognizable circles centered on the
pole (1). Stars near the celestial equator also follow circular
paths around the pole. But, the complete path is interrupted
by the horizon. These appear to rise in the east and set in
the west (2). Looking toward the opposite pole, stars curve
or arc in the opposite direction scribing a circle around the
opposite pole (3).
Stars seen near the
north celestial pole
Stars seen near the
celestial equator
Stare seen looking
in the opposite
direction of the
north celestial pole
… 14 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Celestron AstroMaster LT 70AZ at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Celestron AstroMaster LT 70AZ in the language / languages: English as an attachment in your email.

The manual is 2,5 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Celestron AstroMaster LT 70AZ

Celestron AstroMaster LT 70AZ User Manual - German - 25 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info