iOptron CEM120 Instruction Manual
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iOptron CEM120 Instruction Manual

Center-balanced equatorial mount
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iOptron
CEM120 Center-Balanced Equatorial Mount
Instruction Manual
Product #7300, #7301 & #7302
1

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Summary of Contents for iOptron CEM120

  • Page 1 ® iOptron CEM120 Center-Balanced Equatorial Mount Instruction Manual Product #7300, #7301 & #7302...
  • Page 2 Read the Instruction BEFORE setting up and using the mount! Worm/gear system damage due to improperly use will not be covered by warranty. If you have any questions please contact us at support@ioptron.com WARNING! NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER! Looking at or near the Sun will cause instant and irreversible damage to your eye.

  • Page 3: Table Of Contents

    2. CEM120 Terms ..............................7   2.1. Parts List ..............................7   2.2. Identification of Parts ........................... 8   2.3. CEM120 Mount Basic Cable Connection....................9   2.4. CEM120 Cable Management ........................9   ® 2.5. Go2Nova 8407+ Hand Controller ......................12  ...
  • Page 4 Star List .......................... 40   IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY ......... 46   Ver. 1.0 2018.3 iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design/function may differ from those described in this instruction manual.
  • Page 5 Instruction for CEM120 Gear Switch and Axle Locking Knob Both RA and DEC have the same Gear Switch and Axle Locking Knob, the operations are the same. Gear Switch Axle Locking Knob As an example, here are the positions for the Gear Switch and Axle Locking Knob for RA axis:...

  • Page 6: Cem120 Introduction

    CEM120 and <0.15 arcsec RMS for CEM120EC/CEM120EC2. Along with the stability aspect, the CEM120 features an advanced cable management system consisting of more ports in more locations preventing tangle ups and reducing the chance of fractured cables. It also adds some new features to the CEM family like Wi-Fi and LAN for remote operation and easy to use, reliable clutches on both axes.

  • Page 7: Cem120 Terms

    2.1. Parts List SHIPPING CONTENTS Your new CEM120 mount comes in two shipping boxes. One box contains either a CEM120 (#7300), CEM120EC (#7301) or CEM120EC2 (#7302) mount head, hand controller, and accessories. The other box contains a 22lb (10kg) counterweight and counterweight shaft. The contents are: ...

  • Page 8: Identification Of Parts

    2.2. Identification of Parts Dovetail Saddle  RA Axis Dovetail Locking Knob  DEC Gear Switch  CW Shaft Mounting House DEC Axle Locking Knob  Counterweight AZI Adjustment Knob  Base Mounting Screw  CW Shaft  ALT Adjustment Knob Mount Base  CW Shaft Safety Lock  RA Axle Locking Knob  Cable management  Output Panel  RA Gear Switch  Cable management  Input Panel  ALT Locking Clamp  Mount Basic Ports  Figure 1.CEM120 mount assembly...

  • Page 9: Cem120 Mount Basic Cable Connection

    2.3. CEM120 Mount Basic Cable Connection The basic cable connection ports of a CEM120 mount are all located on the mount base, as shown in Figure 2. Figure 2. Ports on a CEM120 mount base  DC 12V 5A: DC power socket to power the mount (2.5mmX5.5mm, 5525) ...
  • Page 10 Figure 5. AUX port DIN-422 socket  iPORT: for iOptron compatible accessories, such as electrical focuser.  USB 3.0: Powered USB 3.0 port. It is connected to the USB3.0 input on the Input Panel.  5521 5V1A socket: a 2.1mmX5.5mm 5V DC power output for accessories. Maximum 1A, center positive.
  • Page 11 The ports on the Cable Management Panel are connected to the Input Panel located at the end of the mount RA axis, as shown in Figure 7:  1X DC IN 10A power input (2.5mmX5.5mm, 10A max.)  1X USB 2.0 port with a standard type B connector ...

  • Page 12: Go2Nova 8407+ Hand Controller

    8407+ hand controller (HC) shown in Figure 8 is the standard controller used on the CEM120 mount. It has an integrated heater that ensures the LCD display will work at the temperature as low as -20ºC(-4ºF). It has a large LCD screen, function, direction, and number keys on the front;...

  • Page 13: The Lcd Screen

     Serial port: connect the HC to a computer via a RS232 to 4P4C RJ9 cable. The pin-out of the serial port is shown in Figure 9. Figure 9. Serial port pin-out on an 8407+ hand controller 2.5.2. The LCD Screen The 8407+ HC has a large 8-line, 21-character per line, LCD screen which displays information on the status of the mount as shown in Figure 10.The user interface is simple and easy to operate.

  • Page 14: Check The Battery

     Slew: mount is moving with an arrow key is pressed or a GOTO command, such as “Select and Slew” or “Goto Zero Position”;  Tracking: mount is at a tracking status. 10. GPS status: When the power is turned on, the initial GPS status will be “GPS ON”, which means that the mount is connected to its GPS receiver and is seeking a satellite signal.

  • Page 15: Cem120 Mount Assembly

    3. CEM120 Mount Assembly STEP 1. Attach the Mount Make sure that the RA axle is at the locking position (please refer to the charts on page 5). Remove the mount from the package. Put it onto a pier/tripod top and secure it with four included Base Mounting Screws.
  • Page 16 Remove the CW shaft from the package and threaded it onto the CW shaft mounting house. DO NOT release the RA Axle Lock before the CW shaft is fully threaded in. The CW shaft is designed to balance the mount head weight. DO NOT rock the counterweight shaft rigorously.
  • Page 17 You may need more CWs for heavier payload, or smaller size CW for lighter scope. The CEM120 has a Losmandy-D dovetail saddle plate, as shown in Figure 16. Release the dovetal saddle locking knobs and slide the telescope dovatal plate into the saddle. Tighten the saddle locking knob.
  • Page 18 GPS antenna, as shown in . STEP 7. Setup Hand Controller The CEM120 mount is equipped with a GPS receiver which will receive the UTC time, longitude and latitude information for your current location from satellites after a link is established. However, there are still some parameters which need to be entered to reflect your location, such as time zone information and whether daylight saving time is currently in effect.
  • Page 19 Set Time and Site Beep Settings Display Settings Set Guiding Rates Set Tracking Rate Set Parking Position Meridian Treatment Set Altitude Limit Press ENTER. A time and site information screen will be displayed: Daylight Saving Time UTC -300 Minute(s) 2014-03-09 10:19:18 Longitude:W071°08’50”...
  • Page 20 STEP 8. Polar Alignment In order for an equatorial mount to track properly, it has to be accurately polar aligned. A CEM120 mount does not come with an optical polar scope. There are a few ways to perform the polar alignment.
  • Page 21 Celestial Pole. (1) Level the CEM120 mount and set it at Zero Position. Make sure the telescope is parallel to the pole axis (R.A. axis) of the mount. If a finder scope is used, adjust it to be parallel to the telescope optical axis.

  • Page 22: Getting Started

    4.1. Setting the Mount and Performing Polar Alignment Assemble your CEM120 mount according to Section Error! Reference source not found.. Make sure the mount is leveled. Mount an OTA and accessories, and carefully balance the mount on both R.A.

  • Page 23: Goto The Moon And Other Objects

    4.7. Power-Down Memorization The CEM120 mount can memorize its R.A. and DEC positions if the mount loses its power by accident, even during high speed slewing. After the power is back, just do a Select and Slew to the same star when the power is lost.

  • Page 24: Complete Functions Of Go2Nova ® 8407+ Hand Controller

    ® 5. Complete Functions of Go2Nova 8407+ Hand Controller 5.1. Select and Slew Press MENU => “Select and Slew.” Select an object that you would like to observe and press the ENTER key. ® The Go2Nova 8407+ hand controller has a database of over 212,000 objects. Use the ► or ◄ buttons to move the cursor.

  • Page 25: Customer R.a. And Dec

    5.1.8. Customer R.A. and DEC Here you can go to a target by entering its R.A. and DEC coordinates. 5.2. Sync to Target This operation will match the telescope's current coordinates to the Target Right Ascension and Declination. It can be used to correct GOTO pointing error. After slewing to an object, press MENU - then scroll to “Sync to Target”...

  • Page 26: Three Star Alignment

    For example, if the screen shows 7.5" low and 4.3" east, it means that THE MOUNT axis is pointing low and to the east of the Celestial Pole. 5.3.4. Three Star Alignment The three-star alignment will further determine the cone error between the OTA and mount axis. The system will use these data to calculate the goto model.

  • Page 27: Beep Settings

    5.4.2. Beep Settings The Hand Controller allows a user to turn off the beep partially, or even go to a silent mode. To change this setting press “MENU =>Settings =>Beep Settings”, Set Up Time and Site Beep Settings Display Settings Set Guiding Rates Set Tracking Rate Set Parking Position...

  • Page 28: Set Tracking Rate

    If you have an autoguider which has the same pin-out as the ST-I from SBIG, such as Meade/ Losmandy/ Takahashi/ Vixen, make sure a proper guiding cable is used. Refer to your guiding camera and guiding software for detailed operation. WARNING: DO NOT plug your ST-4 guiding camera cable into the iPORT or HBX port.

  • Page 29: Hc Heating Switch

     Wireless Status: displays WI-Fi network parameter after a computer/tablet/SmartPhone connected to the mount. The CEM120 network SSID is HI-LINK_XXXX, password 12345678. If the status does not display, select and press Manual Refresh to refresh. Here is a example screen after connection:...

  • Page 30: Electric Focuser

    5.5. Electric Focuser This function controls an iOptron electric focuser. 5.6. PEC Option This function only works for a standard CEM120 mount. 5.6.1. PEC Playback You can turn “PEC Playback On” to improve tracking accuracy which is especially useful for long exposure astrophotography.

  • Page 31: Edit User Objects

    5.8. Edit User Objects Besides various star lists available in the hand controller, you can add, edit or delete your own user-defined objects. This is especially useful for newly found comets. You can also add your favorite observation object into the user object list for easy sky surfing. 5.8.1.

  • Page 32: Firmware Information

    To counter this, the CEM120 has been equipped with a function that can find the Zero Position for an initial mount set up.

  • Page 33: Maintenance And Servicing

    6. Maintenance and Servicing 6.1. Maintenance The CEM120 mount is designed to be maintenance free. Do not overload the mount. Do not drop the mount as this will damage the mount and / or permanently degrade GoTo performance and tracking accuracy. Use a wet cloth to clean the mount and hand controller. Do not use solvent.

  • Page 34: Appendix A. Technical Specifications

    Appendix A. Technical Specifications Mount  Center‐balanced Equatorial Mount (CEM)  Payload  52kg (115 lbs), exclude counterweight*  Mount weight  26kg (57 lbs)  Payload/Mount weight ratio  2  Material  All metal  Latitude adjustment range  0°~ 68° (0.5 arcmin division)**  Azimuth adjustment range  ± 5° (3 arcmin division)  Right Ascension worm wheel  Φ216mm, 360 teeth, zero backlash  Declination worm wheel  Φ216mm, 360 teeth, zero backlash  Worm  Φ26mm  PEC  PPEC/Real time PEC  PE  ~±3.5 arcsec p‐p (#7300) or <0.15 arcsec RMS for 5 min (#7301) Worm period  240 sec  Counterweight shaft  Φ 38, 540 mm (SS, anti‐slip, 4.5kg)  Counterweight  10 kg (22 lbs)  Mount base size  210 x 230 mm  Motor drive  Stepper motor   Resolution  0.07 arc seconds  Slew speed ...

  • Page 35: 8407+ Hc Menu Structure

    ® Appendix B. Go2Nova 8407+ HC MENU STRUCTURE MENU Select and Slew Solar System Mercury Venus Mars Jupiter Saturn Uranus Neptune Moon Deep Sky Objects Named Object Messier Catalog Caldwell Catalog Abell Catalog Herschel Catalog Stars Named Stars Double/Multi Stars SAO Catalog Constellations Comets...
  • Page 36 Alignment Position of Pole Star One Star Align Two Star Align Three Star Alin Polar Iterate Align Solar System Align View Model Error Clear Alignment Data Settings Set Time & Site Beep Settings Display Settings Set Guiding Rates Set Tracking Rate Set Parking Position Meridian Treatment Set Altitude Limit...
  • Page 37 Edit User Objects Custom Comets Add a New Comet Browse Comets Delete One Comet Delete All Comets Other Objects Add a New Object Browse Objects Delete One Object Delete All Objects Firmware Inf ormation Zero Position Goto Zero Position Set Zero position Search Zero position...

  • Page 38: Appendix C. Firmware Upgrade

    Appendix C. Firmware Upgrade The firmware in the 8407+ Hand Controller and control boards can be upgraded by the customer. Please check iOptron’s website, www.iOptron.com, under Support Directory/CEM Mounts, select CEM120 for details.

  • Page 39: Appendix D. Computer Control A Cem120 Mount

    Appendix D. Computer Control a CEM120 Mount The CEM120 mount can be connected to a computer, a tablet, and/or a SmartPhonebe via serial, USB, LAN or WI-Fi connection. Please refer to iOptron website, www.iOptron.com, under Support Directory/ASCOM Driver, iOptron Telescope ASCOM Driver, for more details.

  • Page 40: Appendix E. Go2Nova ® Star List

    ® Appendix E. Go2Nova Star List Named Deep Sky Object 47 Tucanae 47 Integral Sign Galaxy Andromeda Galaxy 48 Iris Nebula Antennae Galaxies 49 Jellyfish Nebula Barnard's Galaxy 50 Jewel Box Cluster Bear‐Paw Galaxy 51 Lagoon Nebula Beehive Cluster 52 Lambda Centauri Nebula Black Eye Galaxy 53 Large Magellanic Cloud Blinking Planetary 54 Leo Triplet Blue Flash Nebula 55 Little Dumbbell Nebula 10 Blue Planetary 56 Little Gem Nebula 11 Blue Snowball Nebula 57 Little Ghost Nebula 12 Bode's Galaxy...
  • Page 41 Messier Catalog This table is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article List of Messier objects...
  • Page 42 Named Stars Acamar Alrescha Deneb el Okab Lalande 21185 Achernar Alshain Deneb Kaitos Lesath Achird Altair Denebakrab Mahasim Acrab Altais Denebola Maia Acrux A Alterf Dschubba Marfik Acrux B Aludra Dubhe Marfikent Acubens Alula Australis Edasich Markab Adhafera Alula Borealis El Rehla Markeb Adhara...
  • Page 43 Proxima Centauri Sadalbari Sulafat Vindemiatrix Rasalas Sadalmelik Syrma Vrischika Rasalgethi Sadalsuud Talitha Wasat Rasalhague Sadr Tania Australis Wazn Rastaban Saiph Tania Borealis Regor Sargas Tarazed Wezen Regulus Scheat Taygeta Yed Posterior Rigel Schedar Tejat Posterior Yed Prior Rigel Kentaurus A Seginus Thuban Zaniah...
  • Page 44 Modern Constellations Constellation Abbreviation Constellation Abbreviation Andromeda Lacerta Antlia Apus Leo Minor Aquarius Lepus Aquila Libra Lupus Aries Lynx Auriga Lyra Boötes Mensa Caelum Microscopium Camelopardalis Monoceros Cancer Musca Canes Venatici Norma Canis Major Octans Canis Minor Ophiuchus Capricornus Orion Carina Pavo Cassiopeia...
  • Page 45 Double/Multi Stars RigelKentaurus A HIP 95771 105 HIP 40167 157 HIP 28790 Rigel HIP 30867 106 HIP 40817 158 HIP 4675 Gacrux HIP 35363 107 HIP 81292 159 HIP 31676 Sargas HIP 94761 108 HIP 80197 160 HIP 10176 Castor A HIP 21683 109 HIP 88060 161 HIP 25950...

  • Page 46: Ioptron Two Year Telescope, Mount, And Controller Warranty

    As a condition to the obligation of iOptron to repair or replace such product, the product must be returned to iOptron together with proof-of-purchase satisfactory to iOptron.

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