Takahashi EM-400 Temma 2M Instruction Manual

Equatorial

Mount

EM-400

lemma

2M

INSTRUCTION

MANUAL

TAKAHASHI

Thank

yoy

lor

yoy, purchase of

the

EM-400

Temma2M

moon!. This highly

sophisticated moynl is

perle<:lly

$uiled

10

any number of photo/Visual ap-

plications.

In

Ofd8l10f you to be

able

to operale

the

EM-400

Temma2M

to

the

limit of its capabilities, thoroughlly

read

this

manual

and

familarize yoy,.

self wilh

the

COffect

ope/alion

of

I

..

many fealures

and

functions. Properly

used,

the

EM-400

will dellve. ali/etime of operation.

WARNING

I

it

I

NEVER

ATTEMPT

TO

LOOK

AT

THE

SUN

&,DAN-5i!

DIRECTLY

THROUGH

THE

TELESCOPE

OR

FINDER.

OOING

SO

WILL

CAUSE

IN-

STANT

BLINDNESS

DUE

TO

THE

INTENSE

@'/

LIGHT

AND

HEAT

OF

THE

SUN.

IS

CAUTION

I

6

I

• When

you

place

the

tube assembly

into

the

tube holder,

do

not

over

tighten the

tube

holder clamps.

Doing

so could

distort

the

telescope

tube and cause

the

telescope to decollimate.

• Place the

mount

on

the

flattest

ground

at

the observing site. It

is

im·

portant

that

the

tripod

be set on the flattest

ground

available to

pro-

vide a stable base for the

mount.

• Exercise great caution when sliding the 8

kg

counter weights on

to

the

counter

weight

shaft and after this has been done attach

the

safety nut

to the

bottom

of

the shaft

to

keep the counter weights

from

coming

off

the shaft. The

counler

weight

could cause severe damage to anything

it falls

upon.

• Never

under

any circumstances

allow

the

mount

to

get

wet

from

rain.

Moisture

will short circuit the electronics and wash out the lubricant. If

rain threatens,

immediately

take

the

mount

down

or

cover

it

with

a

waterproof

cover in

the

event

the

onset

of

the rain is rapid.

-2-

CONTENTS

Warning & Caution for safety operlltion " 2

Specifications 4 - 5

layout

of

the COnlrol80l( 9 -10

Functions for the

R.A.

and

the Dec. clamps

17

Polar Alignment

in

the Nouthern Hemisphere

19

- 20

Selting the Reticle Offset(1'

21·22

Motor Drive Operation " "

26·27

Contents _ 3

Layout

01

the EM-400

Temm1l2M

Equatorial Mount 6

Features of tha EM-400 Temma2M Mounl 7 Layout

01

the Control Panel 8

Precautions

11

Assembling the Tripod

12

Mount & Counter Weight 13

Tube Holdel

14

DisaSMmbling the Mount ,

15

Balancing

16

Al:imuth & Altitude Adjustment 18

Sett;n9 the Reticle OffMtl21 23

Polar Alignment

in

Low

Latitudes

8elow

20· 24

How

to

Use the Motor Olive

System

25

Procedures for Go·To Operation " "

..

28·

29

Auto Guide Connector 30

-

3-

11.1

~~~~~~_s_p_e_C~if_iC_a_t_i_o_n_S~~~~~~=,11

Equatorial

Mount

Type: German equatorial

with

Temma2M

go-to

system

built-in

R.A.

slow

motion:

Round

worm

wheel

[180:11 by quartz

controlled

stepping

motor

Dec.

slow

motion:

Round

worm

wheel

[180:

1)

by

quartz controlled

stepping

motor

Azimuth

adjusunenl:

± 10·

finely

with

dual screws 360" freely

with

the

dedicated turntable

Altitude adjustment:

Dc _ 47°

(ML)

15° - 58° {Hl]

Loading

capacity:

35kg (77 Ibs)

Gross

weight:

Head

unit:

22.Jkg

(49 Ihs)

Base unit: 5.2kg

(l'

Ibs)

Weight shaft: 2.0kgl4.4Ibsl

Polar

alignment

scope

Built-in, 11K, 3'

setting

accuracy

Scale p.mllrn, quick reference

type,

good until 2040 in the Northern Hemisphere

with

illumination

lind

bubble level

Counter-weight

8kg

1(2

-.

-

Motor

Drive

System

[Temma2M)

Drive System:

Dual

axes, quart2 control, driving frequency: 240pps

NIS,

SllIrlSun twitching

by

hand controller

Usable Area: World-wide, but high latitude is l.."ited

as

mentioned

in

tOe

Equatorial Moont section

High Speed Drive :

ApprolO:.

SOOlO:

siderlal

Correction Speed:

RA:

0.11 -1.99lO:

Sidereal

(manual operalion)

Dec:

± 0.15 -

14.65

arc seclsec by

1.5

arc sec/see

stepless

by

the speed control provided on the control pad

Mode

indic~llo,:

High speed

~ralion

-

led

light

Normal

~rlltion

• green lighl

Power Source:

DC12V

Power Consumplion : Sidereal rate Approx.

O.SA High speed on both axes 3.5A Stal1

5.1A

Go-To

Operation:

By a PC

"Go-To~

Disc:

F'egasus21

or other compatible software

Accessory:

RS232C

cable {Tamma2M auto-guider

CIIble

lor U.S.A.)

Operationallemperllture:

-5 -+30'C

These

specifications are $ubjeet

to

change without notice.

-

5-

Layout

of

the

EM·400

Temma2M

Equatorial

Mount

Sefety

nut

/ T

....

Hold..-

Plot.

Fir, I

Features

of

the

EM·400

Temma2M

Mount

II

- 1 -

..

Sidereal

drive

rate

employs

24Qpps

quarU controlled pulse motors lor

steady

viewing al very high magnification.

..

Modular

system insures greater

portabil·

ity breaking down into three parts:

A.A,

head, base and

counter

weight

shaft.

..

More

rigidity

than

the

NJP

by

using

the

worm

wheel

of

the same diameter.

.. The 1b magnification

of

the polar align-

ment

telescope allows

for

more

accurate

polar

alignment.

..

Uses II

flange

connector

to

iI\l8ch

the

mount

to the tripod

that

allows 3600 ro-

tation fOi easier

polar

alignment.

...

The

encoders

are built in

to

the the

mount

to eliminate

cables

lind allow the

EM400

Temma2M

10

be

used

without

having

cables

wrapping

around

the

mount

when

it is used.

...

The control

bolt

cables

i1,e

attached

to a

recessed

control box in the

base

of the

RA

assembly

to

keep

the

control

cables

from

being

twisted,

*The tube

holder

base is

provided

with

the

four

hole

pattern

of

the NJP as

well

as

the

two

hole

pattern

of

the

EM·10/200

mounts

to

provide

greater fleKibility and

allow

any

Takahashi

telescope

to

be

mounted

.

• Each counter-weight is

provided

with

two

locking

screws

to

provide

better

locking

of

the

weight

to

the shaft•

*The

EM·400

Temma2M

can be

used

ei-

ther

the

wooden

or

adjustable

metal

tri-

pods

.

II

Layout

of

the

Control

Panel

[I

•

Control

Panel

Powe!LEOI

:

When

the

power

switch is slide to

the

On

position

the LED turns on and the

mount

is

activilted.

P-Light

Control:

When

the

Power

Switch

is

turned

on, the

~'um;nalor

for

the

polar alignment telescope

system

is turned on.

The

brightness

of

lhe

illuminator

can

be

ehange

bv

carefully turning !he P-Ught

c0n-

trol slotted screw

very

carefully

with.

plas-

tic

screw drivel. Once the brightness is set,

the

set

screw

should be leh alone.

DC12v:

Connect

the

POWIK

cable supplied

wilh

the

mount

to

/I

power

supply 12vDC

by

an&Ch-

ing

the

red !lItigator clip

to

the

+ terminal

and tho black alligator clip

10

the . terminal.

This

mounl

operates

on 12v

DC

only.

Auto

Guider:

The

terminal is

used

to

connect

an

auto

guider

to

the mount. There

/lfl!

three cables

available with

the

following terminations:

RJ_14. 5T-4 lind ST-7.

Control

Box:

This is

the

connector

for

the

hand

control

ix»l. Before inserting

the

cable into the

con·

nector makll certain that

the

pins are aligned.

PC

This terminal is

connected

to the

computer

cable supplied the mount that terminates in

an

AS232 serial connector

lemma

2M

,_

80

TO

SYSTEM

-

o

0:

TAKAHASHI

_.-

..

-_

-

.....

..

00

Fil

2

FII

3

Note: Seriel to

USB

conn~tors

a'e

avail·

able for

computer

without serial ports.

(Caution]

•

Insert

the

power

c:or.lIIClOI

carefulv

into

the

DC 12...

rooept&C\e mailing certain

that

it

bot

lOmB out

to

supply a

fum

connection

for

the

powM.

• The blank connector is currently

nOI

used

and

is provided for future expansion.

. ,-

- -

• Control Box

(D

R.

A.

Centering

Buttons

[red]

When these bullons ara prossed the mount

moves

in

R.A. speed up

0'

slow down.

<%>

Dec. Centering

Buttons

[whiteJ

Whon

these bullons are pressed the mount

movos either

up

Of

down

in

Dec.

I

/

,"

-0

o

\,.

~I

./

o

I

FiC

(

@Dec.

Mode

Operation

Switch

This switch

is

used to reverse the di,ection

in

which a star is moved when either Dec.

button

is

pressed. Using this control enables

the

observe'

to move tho flar

in

the direc-

tion that coincides with the position

of

the

bUllon on

the

hand control either

up

0'

down

Of

,ight

or

left.

This cont,oIallows

the

observer to more easily center an object

in

the

field

of

view.

@)AA

Mode

Reversal

Switch

AI

with the Dec switch, this is used

to

re-

verse the direction

in

which a star

is

moved

to

match the position

of

the R.A. bunon so

that when

the

left button

is

pressed the star

moves to the left

in

the field, etc.

@DecSpeed

Dial

In

the Normal

Speed

Mode this diat adjusts

the speed at which a star

i,

eente,ed

in

the

Dec.

direction fro 0.15 to 14.85 IfC seconds

par

second

when

the

Dec

buttons

are

pressed

in

eithe, direction.

(j)

<3)

0

u

~

••

~

u

<3)

<Q)

-

•

TAKAHASHI

•

<3)

_.-

<3)

@

~

@

Fic

5

(I)

R.A.

Speed

Dial

In

the Normal

Speed

Mode this di,tadjuS\s

the

speed

at which an object is centered

in

R.A. from

·1%

to

99%

of

the sidereal rate

in

either <!i'ection.

<Zl

Drive Mode

Switch

This switch is

used

to

change

the motor

speed

18nge

from

no,ma!

to

high

speed

or

vIce versa.

HS -High

Speed

NS

= Normal

Speed

-,-

Takahashi EM-400 Temma 2M Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual