Astrophotography - Iñaki Lizaso

Takahashi EM-200 Temma2M

What is the EM-200 ?

The EM-200 is a German type equatorial mount manufactured by Takahashi since 1989. Was designed for compact portability and can upload 18kg, using high performance pieces provides very accurate tracking and goto operation for any number of photo/visual applications.

All components of the equatorial mount like motors, wires, worms are integrated in the inside of the mount. This protect the mount from the outside hard enviromental conditions during the night, and facilitates the assembly/disassembly of the equatorial mount by the user. Even the counterweight shaft is retractable into the equatorial mount.

EM-200 characteristics

* Type

German equatorial with dual axis drive motors, built-in drive corrector, iluminated polar axis finder, bubble level.

* RA slow motion

Round worm wheel (180:1) by motor drive only.

* DEC slow motion

Round worm wheel (180:1) by motor drive only.

* Azimuth adjustment

Adjustable 15' in either direction.

* Setting circles

RA driven: 10' increments. DEC: 2º increments.

* Loading capacity

16kg.

* Gross weight

15kg.

* Polar axis finder

Built-in with setting accuracy pattern good until 2030 in either hemisphere, polar illuminator and bubble level built-in.

Temma2 Specifications

* Application

EM-10 Temma2Jr., EM-200 Temma2Jr., EM-200 Temma2, EM-400 Temma2, NJP Temma2, JP-Z Temma2, EM-500 Temma2.

EM-11Temma2M, EM-200Temma2M, EM-400Temma2M, EM-500Temma2M.

EM-11Temma2Z, EM-200Temma2Z, EM-400Temma2Z, EM-500Temma2Z.

* Drive System

Dual axes, quartz control. Driving frecuency: 100pps (200pps for NJP/JP-Z, 240pps for EM-400).

* Usable Area

All over the world, but with limit for the latitude for some models.

* High Speed Drive

Working voltage	DC 12V	DC 24V
EM-10 Temma2Jr.	120X	250X
EM-200 Temma2Jr.	120X	250X
EM-200 Temma2	350X	700X
NJP / JP-Z Temma2	175X	350X
EM-400 Temma2	250X	500X
EM-500 Temma2	260X	520X

EM-10 Temma2M / Z	150X	-
EM-200 Temma2M / Z	700X	-
EM-400 Temma2M / Z	500X	-
EM-500 Temma2M / Z	400X	-

* Correcting speed (manual operation)

RA: 0.1 - 1.9X to the sideral rate by 0.1x increments. DEC: +-1.5 - 13.5 arc sec/sec by 1.5 arc sec/sec increments.

* Power source

DC 12V or DC 24V.

Temma2M / Z operates only at DC 12V.

* Power consumption (sideral rate / high speed/ start)

Working voltage	DC 12V	DC 24V
EM-10 Temma2Jr.	0.25 / 0.88 A	0.22 / 0.9 A
EM-200 Temma2Jr.	0.28 / 0.94 A	0.26 / 1.94A
EM-200 Temma2	0.42 / 0.94 A	0.35 / 1.07A
NJP / JP-Z Temma2	0.44 / 0.71 A	0.35 / 0.84 A
EM-400 Temma2	0.5 / 0.7 A	0.4 / 0.9 A
EM-500 Temma2	0.52 / 0.73 A	0.39 / 0.76 A

EM-10 Temma2M / Z	0.8 / 3.6 / 5.3 A	-
EM-200 Temma2M / Z	0.8 / 3.5 / 5.1 A	-
EM-400 Temma2M / Z	0.8 / 3.5 / 5.1 A	-
EM-500 Temma2M / Z	0.8 / 3.5 / 3.6 A	-

* Go To Operation

By PC or THC hand controller optionally available.

EM-200 SERIES

1989/5: New product EM-200 equatorial mount.

1989/9/22: The EM-200 was selected in Japan as good design commodity by the Ministry of Trade and Industry. EM-200G.

1994/7/16-17: J.T.B Show '94: μ-300, FS-78, EM-2, EM-500, EMD-200.

1997/5: New product announcement, EM-200USD.

1997/6: J.T.B Show '97: ε-350, FS-152, EM-10, EM-200USD.

1998/5: New product EM-200 Temma equatorial mount.

1998/8: Astronomical guide September edition: EM-200.

1999/6: J.T.B Show '99: BRC-250, FSQ-106, 22x60, Temma200, TG-SP, NJP.

2000/6: New product EM-200 TemmaPC Jr equatorial mount.

2000/6/24-25: J.T.B Show '00: BRC-250, FSQ-106N, FS-78C, FS-60C, SKY90, EM-10/200 TemmaPC, TG-SP.

2000/7: New product EM-200 TemmaPC equatorial mount.

2000/9: Monthly astronomical July edition ' Telescope Review ': TemmaPC.

2001/2: Monthly astronomical March edition ' Telescope Review ': SKY90 ・USD- II.

2001/6: J.T.B Show '01: BRC-250, FSQ-106N, FS-78C, FS-60C, EM-200TemmaPC-THC.

2002/7: New product Temma2 and Temma2 Jr series equatorial mounts (EM-10, EM-200, EM-500 and NJP) announcement.

2002/7: New USDIII Equatorial Series (EM-10, EM-200) released.

2009/7/28: New product announcement, Temma2M Takahashi goto system.

2015/11/20: End of production for Temma2M. Replacement product's announcement expected for the end of year 2015.

2015/12/21: New product announcement, Temma2Z Takahashi goto system.

2017/02/24: New product announcement, FG-Temma2Z Takahashi goto system. Available firmware update from T2Z to FG-T2Z. No plans for EM-500.

2020/01/16: End of production for Temma2Z. Replacement by Temma3.

2020/05/25: New product announcement, Temma3 Takahashi goto system.

2020/08/12: New product announcement, EM-200Temma3.

Specifications	EM-200 USD3	EM-200 TEMMA2 Jr.	EM-200 TEMMA2	EM-200 TEMMA2M / Z
Max. Loading Capacity	18kg	18kg	18kg	18kg
Weight	15kg	15kg	15kg	15kg
Counterweights	5kg x 2	5kg x 2	5kg x 2	5kg x 2
Tracking accuracy	± 5"	± 5"	± 5"	± 5"
RA worm gear period	8min	8min	8min	8min
RA setting circle division	10arcmin	10arcmin	10arcmin	10arcmin
DEC setting circle division	2º	2º	2º	2º
Operation Voltage	12V / 24V	12V / 24V	12V / 24V	12V
Power Consumption at 12V	Tracking: 0.3A; HSM: 2.0A	Tracking: 0.3A; HSM: 2.0A	Tracking: 0.3A; HSM: 1.6A	Tracking: 0.3A; HSM: 1.6A; Start: 5.1A
Power Consumption at 24V	Tracking: 0.3A; HSM: 2.0A	Tracking: 0.3A; HSM: 2.0A	Tracking: 0.3A; HSM: 1.9A	-
GOTO (encoders)	-	Included	Included	Included
High Speed mode (HSM)	12V: 120x; 24V: 240x	12V: 120x; 24V: 250x	12V: 350x; 24V: 700x	700x
Low Speed mode (LSM)	0.1x to 1.9x ( 0.1x increments )	0.1x to 1.9x ( 0.1x increments )	0.1x to 1.9x ( 0.1x increments )	0.11x to 1.99x ( 0.1x increments )
RA gear diameter	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth
RA axis diameter	Ø 40mm	Ø 40mm	Ø 40mm	Ø 40mm
DEC gear diameter	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth	Ø 92mm / 180 teeth
DEC axis diameter	Ø 40mm	Ø 40mm	Ø 40mm	Ø 40mm
Counterweights shaft diameter	18mm	18mm	18mm	18mm
Azimuth adjustment	± 15º	± 15º	± 15º	± 15º
Elevation adjustment	ML: 0-50º ; HL: 20-50º	ML: 0-50º ; HL: 20-50º	ML: 0-50º ; HL: 20-50º	ML: 0-50º ; HL: 23-63º
Polar finder	Built-in included	Built-in included	Built-in included	Built-in included