580483

Celestron AstroMaster 90 EQ-MD Manual

10
Zoom out
Zoom in
Previous page
1/32
Next page
10
M
M
o
o
v
v
i
i
n
n
g
g
t
t
h
h
e
e
T
T
e
e
l
l
e
e
s
s
c
c
o
o
p
p
e
e
M
M
a
a
n
n
u
u
a
a
l
l
l
l
y
y
In order to properly balance your telescope, you will
need to move your telescope manually at various
portions of the sky to observe different objects. To
make rough adjustments, loosen the R.A. and Dec.
locking knobs slightly and move the telescope in the
desired direction. To make fine adjustments, when the
knobs are locked you turn the slow motion cables.
Both the R.A. and Dec. axis have locking knobs to
clutch down each axis of the telescope. To loosen the
clutches on the telescope, unlock the locking knobs.
Figure 2-21
Dec. Lock Knob on top of Dec.circle & R.A.
Lock Knob on top of R.A. circle
B
B
a
a
l
l
a
a
n
n
c
c
i
i
n
n
g
g
t
t
h
h
e
e
M
M
o
o
u
u
n
n
t
t
i
i
n
n
R
R
.
.
A
A
.
.
To eliminate undue stress on the mount, the telescope should be properly balanced around the polar axis. In
addition, proper balancing is crucial for accurate tracking if using an optional motor drive. To balance the mount:
1. Release the R.A. lock knob (see figure 2-21) and position the telescope off to one side of the mount (make sure
that the dovetail mounting bracket knob is tight). The counterweight bar will extend horizontally on the
opposite side of the mount (see figure 2-22).
2. Release the telescope — GRADUALLY — to see which way the telescope “rolls” or falls.
3. Loosen the counterweight locking knob on the counterweights (one at a time).
4. Move the counterweights to a point where they balance the telescope (i.e., it remains stationary when the R.A.
lock knob is released).
5. Tighten the locking knobs to hold the counterweights in place.
B
B
a
a
l
l
a
a
n
n
c
c
i
i
n
n
g
g
t
t
h
h
e
e
M
M
o
o
u
u
n
n
t
t
i
i
n
n
D
D
e
e
c
c
.
.
The telescope should also be balanced on the declination axis to prevent any sudden motions when the Dec. lock
knob (Fig 2-21) is released. To balance the telescope in Dec.:
1. Release the R.A. locking knob and rotate the telescope so that it is on one side of the mount (i.e., as described in
the previous section on balancing the telescope in R.A.).
2. Lock the R.A. locking knob to hold the telescope in place.
3. Release the Dec. locking knob and rotate the telescope until the tube is parallel to the ground (figure 2-23).
4. Release the tube — GRADUALLY — to see which way it rotates around the declination axis. DO NOT LET
GO OF THE TELESCOPE TUBE COMPLETELY!
5. For the 130 EQ Newtonian, loosen the screws that hold the telescope tube inside the tube rings and slide the
telescope either forwards or backwards until it remains stationary when the Dec. lock knob is released. For the
90 EQ refractor, loosen the mounting knob and safety screw on the dovetail mounting bracket (Figure 2-18) and
slide the telescope tube slightly in either direction until it remains stationary when the Dec. lock knob is
released.
6. Tighten the tube ring screws firmly to hold the telescope in place on the 130 EQ. For the 90 EQ, tighten the
mounting knob and then the safety screw on the dovetail mounting bracket.
… 10 …


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 90 EQ-MD 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 90 EQ-MD in the language / languages: English as an attachment in your email.

The manual is 10 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 90 EQ-MD

Celestron AstroMaster 90 EQ-MD User Manual - German - 32 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