Teleskop-Service TSEQ25 Manuel utilisateur

Equatorial mount TSEQ25 User manual

User manual

Equatorial mount

TSEQ25

Equatorial mount TSEQ25 User manual

Never look at the sun with a telescope or

any other optical device. Permanent and

irreversible damage would be done to

your eyes, which could lead to blindness.

For solar observation, there are special

solar ﬁlters that are mounted in front of

the front lens of the telescope. Please also

consider the small ﬁnder scope, which

must also be covered or equipped with a

solar ﬁlter.

Do not use eyepiece solar ﬁlters, as they

may crack and cause you to lose your

eyesight.

Also, please do not use the telescope for

solar projection. The heat generated inside

may destroy the telescope/eyepiece.

Never leave the telescope unattended,

especially when children are around. They

could endanger themselves and others

through lack of knowledge.

Only use the telescope for the type of ob-

servation described in these instructions.

WARNING!

Contents

Overview......................................................................................................... 3

Assembling the tripod ....................................................................................4

Installing the mount head...............................................................................4

Attachment of counterweight rod, counterweight and shafts........................5

Adjusting the latitude......................................................................................6

Balancing telescope and mount.....................................................................6

Polar Alignment ..............................................................................................8

Celestial coordinates......................................................................................9

Tracking motor (sold separately)..................................................................10

Equatorial mount TSEQ25 User manual

Note: Some images in this manual show a different mount.

Overview

a. Declination ﬁne adjustment

b. Right ascension ﬁne adjustment

c. Clamping of the declination axis

d. Clamping of the right ascension axis

e. Counterweight

f. Clamping pole height adjustment

g. Pole height adjustment

h. Dovetail clamp for telescope

Equatorial mount TSEQ25 User manual

Unpack all parts and place them rea-

dy for assembly.

Adjust the tripod legs to a comfortab-

le (working) height for you and make

sure that the adjusted length/height

of the legs is the same.

Attach the tripod legs to the tripod

head using the screws provided.

Make sure that the holders for the

storage plate face inwards.

Plug the storage plate and holder

together as shown in the picture and

lock the connection by turning the

storage plate by 60 °.

Assembling the tripod

Installing the mount head

Place the mount head on the tripod, insert the

retaining screw from below through the hole

in the Tripod Head and tighten the mount

head. Hold it in position until the screw is fully

tightened.

Equatorial mount TSEQ25 User manual

Next, attach the two ﬂexible shafts to the

mount. To do this, remove the protective rub-

ber caps from the shaft axles of the mount, if

present.

Loosen the clamping screw of each shaft and

slide the shaft onto the axis so that the clam-

ping screw is on the ﬂattened side of the axis.

Attach the counterweight rod and turn the

mount head so that the rod points down-

wards.

Then lock both axes with the clamping

screws. Then remove the knurled screw at

the lower end of the counterweight rod.

Slide the counterweight onto the rod and ﬁx

it with the clamping screw. Then reinsert the

knurled screw.

Attention: Make sure to check if the

clamping screw of the weight is tightened

properly before releasing the weight! Risk

of injury!

Attachment of counterweight rod, counterweight and shafts

Equatorial mount TSEQ25 User manual

Set the latitude of the mount to the latitude of

your observation site.

To do this, loosen the toggle screw fand use

the screw g to set the correct polar height.

Tighten the toggle screw f.

In order to minimize the load on the mount

and to be able to move the telescope as

easily as possible, all parts on the mount

(counterweight, tube with accessories on the

eyepiece side, etc.) should be balanced, i.e.

brought into equilibrium.

To do this, set up the telescope with the

mount so that you have enough space to

slew the telescope without the tube hitting

objects in the vicinity.

Now ﬁrst open the clamping screw on the

upper axis (Dec axis, c).

Move the counterweight to the lower end of

the counterweight rod and clamp it there.

Turn the RA axis so that the counterweight is

at the lowest position and clamp the axis in

this position.

Loosen the clamp of the upper axis (Dec axis,

c), bring the telescope tube into the horizontal

position and check whether the tube remains

in this position or moves to one side due to

an imbalance.

Balancing telescope and mount

Adjusting the latitude

Equatorial mount TSEQ25 User manual

If the tube is not in balance, ﬁrst clamp the

Dec axis with the tube in a horizontal position.

Slightly loosen the clamping screw(s) of the

tube clamp. Move the tube to compensate

for the imbalance. To check, loosen the Dec

axis again and again while holding the tube to

prevent unintentional swiveling.

Tighten the clamping screw of the tube

clamp(s) when the tube is balanced.

Now slew the tube to the position shown in

the adjacent picture (parallel to the RA axis).

The inclination may differ from that shown in

the image.

Make sure that the Dec axis (clamping screw

c) is locked and open the clamping screw of

the RA axis (d).

Loosen the clamping screw of the counter-

weight. Swivel the telescope until the Dec-

axis is horizontal. Hold the counterweight to

prevent it from slipping on the rod.

Find the counterweight position where the

weight and telescope are balanced and

clamp the weight at this position. It should no

longer be possible to move it. Return the tele-

scope to the position shown in the ﬁrst image

on this page and clamp the RA axis.

Your telescope is now balanced on the

mount.

Equatorial mount TSEQ25 User manual

Set up the tripod with the mount so that the

right ascension axis points as exactly as

possible to the north. A compass facilitates

the alignment.

Look for the constellation „Big Dipper“ in the

night sky. The imaginary connecting line of

the two rear stars points to the North Star

(„Polaris“).

The northern celestial pole is in the immediate

proximity of this star.

Be careful when setting the latitude as well

as the alignment to north, because the more

precise the alignment is, the longer you can

track the telescope to an object only by mo-

ving the RA axis.

Look along the Dec axis. If this axis points to

Polaris, you have aligned your mount accu-

rately enough for visual observing. You can

now loosen the axis clamps and slew the

telescope to the desired object. Then lock

the axes. Now you can ﬁne tune with the two

ﬂexible shafts and then use only the RA shaft

to track the telescope.

A parallactic mount is set up so that the

RA axis is parallel to the Earth‘s axis. With

correct alignment, the apparent motion of the

celestial bodies caused by the Earth‘s rotati-

on can be compensated by moving only the

RA axis.

When doing this, the tripod should be as level

as possible (tripod head level). If the ground

is uneven, you can extend the tripod legs

to different lengths to compensate for the

unevenness.

Polar Alignment

15 14

21 22 23 0123

Equatorial mount TSEQ25 User manual

Right ascension

Declination

Celestial North Pole

Celestial South Pole

On Earth, we have a coordinate system that

can be used to accurately describe any loca-

tion on Earth using two coordinates. These

are latitude (north or south angular distance

from the equator) and longitude (east or west

angular distance from the prime meridian).

In the sky, declination corresponds to latitu-

de. Thereby „+“ stands for the northern, „-“

for the southern hemisphere. The longitude is

represented by the right ascension.

However, there is no value for east and west,

but a continuous count in hours and minutes

indicated (0 to 24 hours). You will ﬁnd these

values on the pitch circles of your mount.

You can - assuming a precise setup and

alignment of the mount - locate objects ap-

proximately based on the coordinates or use

star charts exclusively.

Celestial coordinates

Equatorial mount TSEQ25 User manual

The apparent motion of celestial objects

results from the Earth‘s rotation. To compen-

sate for this motion and to keep the observed

object in the telescope‘s ﬁeld of view, the

mount must be tracked during observation.

A motor set consisting of a tracking motor

and a manual control is available for the

TSEQ25. The motor is mounted on the RA

axis and does the tracking.

Tracking motor (sold separately)

Teleskop-Service GmbH

Von-Myra-Straße 8

D-85599 Parsdorf

Tel. 089-99228750

E-Mail: [email protected]

The motor set includes all the parts you need

for mounting. The assembly is done in a few

minutes. Proceed as follows.

1. Remove the ﬂexible shaft of the RA axis.

2. unscrew the grub screws in the ﬂexible

coupling until they no longer protrude into the

axial bore.

3. Remove the two allen screws next to the

worm wheel of the RA axis.

4. Slide the ﬂexible coupling onto the worm

shaft, making sure that the grub screw is

positioned over the ﬂattened side of the shaft.

Carefully tighten the grub screw.

5. Slide the motor shaft onto the ﬂexible

coupling and rotate the motor unit so that

the holes of the holder are located over the

threaded holes below the worm wheel.

6. Fasten the holder to the mount with the

two hexagon socket screws.

7. Carefully tighten the grub screw on the

motor side of the ﬂexible coupling.

8. Connect the manual control to the motor

and to the power supply.

1) Roughly point the telescope at the object

to be observed as usual (loosening the axis

clamps, manual slewing, locking the axes).

2. Switch on the manual control. When the

voltage is sufﬁcient, the operation LED lights

up.

3. Set the desired tracking direction (northern

or southern hemisphere).

The motor will now track the mount.

4. To center the target object in the eyepiece,

use the manual drive in the declination axis.

The RA axis is moved with the four keys of

the manual control. You can use these to

move the axis in both directions. Two speeds

are available in each case.

Mounting the tracking motor

Using the tracking motor

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