iOptron CEM25 Instruction Manual
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iOptron CEM25 Instruction Manual

Center balanced equatorial mount
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iOptron
CEM25 Center Balanced Equatorial Mount
Instruction Manual
Product #7100E, #7102E, #7100-EC, #7102-EC

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Summary of Contents for iOptron CEM25

  • Page 1 ® iOptron CEM25 Center Balanced Equatorial Mount Instruction Manual Product #7100E, #7102E, #7100-EC, #7102-EC...
  • Page 2 Read the included CEM25 Quick Setup Guide (QSG) BEFORE taking the mount out of the case! This product is a precision instrument and uses a magnetic gear meshing mechanism. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount.

  • Page 3: Table Of Contents

    2.4.2. The LCD Screen ..........................10   2.5. Check the Battery ..........................11   2.6. Bench Testing the Mount ........................11   3. CEM25 Mount Assembly ..........................13   3.1. Introduction ............................13   3.2. CEM25 Mount Assembly ........................13  ...
  • Page 4 Appendix E. Go2Nova Star List ........................39   IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY ......45   Ver. 2.0 2017.10 iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design/function may differ from those described in this instruction.

  • Page 5: Cem25 Overview

    Plus, the Go2Nova Hand Controller is intuitive to use with a large 4-line LCD screen to easily set up your telescope and select where you want to go. The CEM25 – a new category of viewing and astrophotography. Features: ...
  • Page 6  Optional StarFi WiFi adapter (#8434) for full function control via SmartPhone/Tablet/Computer WARNING: To avoid gear slippage, DO NOT rock the counterweight shaft rigorously. Make sure the Tension Adjuster is set properly. Worm system damage due to user operation error will not be covered by warranty.

  • Page 7: Cem25 Terms

    2. CEM25 Terms 2.1. Parts List There are two shipping boxes for a regular tripod version. One box contains a CEM25/CEM25EC mount, hand controller, one 10.4 lbs (4.7kg) counterweight, counterweight shaft, tripod spreader and accessories. The other box contains a tripod.

  • Page 8: Assembly Terms

    CW Safety Screw CW Safety Screw Alignment Peg Alignment Peg Center Rod Knob Center Rod Knob Accessory Tray Accessory Tray Tray Locking Knob Tray Locking Knob Tripod Leg Lock Tripod Leg Lock Figure 1. CEM25 assembly terms (mount and tripod)

  • Page 9: Cem25 Ports

    Power DC 12V: DC power plug (2.1mmX5.5mm, center positive)  iOptron Port: For connecting to other iOptron accessories, such as a laser pointer or a planetary dome control. DO NOT plug guiding camera cable into it or the camera will be damaged.

  • Page 10: Key Description

    8408 hand controller (HC) shown in Figure 3 is the standard controllers that used for a CEM25 mount. It has a 4 line, 21 character large LCD screen, function keys, direction keys and number keys on the front; a and a HBX port (6-pin) and a serial port (4-pin) at the bottom.

  • Page 11: Check The Battery

    The LCD screen will switch to the information screen, as indicated in Figure 6, with pressing any button. Magnitude Target Name Declination Right Ascension Altitude Azimuth N/S Hemisphere Mount Status Current Time Slew Speed Figure 6. 8408 HC LCD Information Screen 1.
  • Page 12 Figure 7.Do not operate the mount with an unbalanced load...

  • Page 13: Cem25 Mount Assembly

    CEM25 mount. 3.2. CEM25 Mount Assembly NOTE: The CEM25 mount is a precision astronomical instrument. It is highly recommended that you read the entire manual and become familiar with the nomenclature and function of all components...
  • Page 14 WARNING: To avoid gear slippage, DO NOT rock the counterweight shaft rigorously and make sure the Tension Adjuster is set properly. Worm system damage due to user operation error will not be covered by warranty. WARNING: The new Gear Switch will allow you to have most precise weight balance. This also means the mount or OTA will swing FREELY when the Gear Switch is disengaged.
  • Page 15 Accessory Tray Tray Locking Knob Figure 9. Set up tripod STEP 4. Attach the CEM25 Mount Back out both Azimuth Adj. Knobs to allow enough clearance inside the chamber. Position the mount on the tripod head with the Alignment Peg in between the two Azimuth Adj. Knobs. Thread the Center Rod into mount to secure it with tripod.
  • Page 16 Turn the R.A. gear switch to CLOSE position again. A CEM25 mount comes with a 10.4 lbs (4.7kg) counterweight. It should be able to balance a total payload of about 13 lbs (6kg) for a 8” diameter telescope. An optional CW or extension bar is needed for a heavier payload or a larger diameter Telescope.
  • Page 17 CAUTION: The telescope may swing freely when the R.A. or DEC Gear Switch is released. Always hold on to the OTA before you release the gear switch to prevent it from swinging. It can cause personal injury or damage to the equipment. Release Tension Adjuster by turning it counterclockwise.
  • Page 18 STEP 10. Setup Hand Controller The CEM25 is equipped with a GPS receiver, which will receive the time, longitude and latitude information from satellites after the link is established. However, there are still some parameters need to be entered to reflect your location, such as time zone info and daylight saving time.
  • Page 19 STEP 11. Polar Alignment One of CEM25’s unique features is that the polar scope can be accessed at anytime. It will not be blocked by DEC axle as in a German equatorial mount. This makes it possible to adjust the polar alignment during the tracking.
  • Page 20 Quick Polar Alignment (1) Level the CEM25 mount. 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. You may check the parallelness during daytime with a distance object.
  • Page 21 Celestial Pole. (1) Level the CEM25 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 Release the Gear Switch to manually return the mount to Zero Position, or use the hand controller to slew the mount to Zero Position. Press ENTER to confirm the zero position. Check the Zero Position by using MENU=>”Zero Position”=>”Goto Zero Position” before each session.

  • Page 23: Getting Started

    4.1. Setup the Mount and Polar Alignment Assemble your CEM25 mount according to Section 3.2. Turn the mount power switch on. When the GPS receiver is connected to satellites, LCD will display GPS OK. The mount will have correct time and site information.

  • Page 24: Star Identifying Function

    4.7. GOTO and Tracking Position Memorization The CEM25 mount can memorize its R.A. and DEC positions if the mount loses its power by accident, even during high speed slewing. Just do a Select and Slew to the same star when the power is lost after the power is back.

  • Page 25: Complete Functions Of Go2Nova ® 8408 Hand Controller

    ® The Go2Nova 8408 hand controller for CEM25 mount has a database of over 150,000 objects. Use the ► or ◄ buttons to move the cursor. Use the number buttons to enter the number, or the ▼ or ▲ ”...

  • Page 26: User Objects

    5.3.1. Pole Star Position ® This function displays the position of the Pole Star for Quick Polar Alignment using the iOptron AccuAlign polar scope. In the Northern Hemisphere the position of Polaris is displayed, while in the Southern Hemisphere the position of Sigma Octantis is shown.

  • Page 27: Three Star Align

    select the first alignment star and press ENTER. Center the target in your eyepiece using the arrow keys after the mount slews to it. Press ENTER when finished. The hand controller will prompt you to choose a second star. After centering the second star, the two-star alignment is finished. After the two-star alignment, the altitude and azimuth errors will be displayed.

  • Page 28: Set Tings

    5.4. Set tings 5.4.1. Set Time and Site Refer to STEP 10 in Section 3.2. 5.4.2. Set Beep 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” => “Set Beep”, Set Up Time and Site Set Beep Set Display...

  • Page 29: Set Tracking Rate

    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 iOptron port or HBX port. It may damage the mount or guiding camera electronics.

  • Page 30: Set Ra Guiding (Cem25Ec Only)

    R.A. guiding on by selecting “Allow RA Guiding” to allow the mount to receive guiding corrections from the autoguiding software. 5.5. Electric Focuser This function controls an iOptron electric focuser. 5.6. PEC Option PEC for short, is a system that improves the tracking accuracy of the drive by reducing the number of user corrections needed to keep a guide star centered in the eyepiece.

  • Page 31: Edit User Objects

    5.7. 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. Up to 60 comets and other user objects can be stored.

  • Page 32: Firmware Information

    Add a New Object Browse Objects Delete an Object Clear All Objects Select “Add a New Object”. A screen will be displayed asking you to Enter R.A. and DEC coordinates: Enter R.A. and DEC R.A.: 00h00m00s DEC: +00d00m00s You may enter the R.A. and DEC coordinates of the object you want to store, and press ENTER to confirm.

  • Page 33: Maintenance And Servicing

    Call in the U.S. 1.781.569.0200. In the unlikely event that the CEM25 mount requires factory servicing or repairing, write or call iOptron Customer Service Department first to receive an RMA# before returning the mount to the factory.

  • Page 34: Appendix A. Technical Specifications

    Appendix A. Technical Specifications Mount Center-Balanced Equatorial Mount (CEM) Payload Up to 27 lb (12.3kg), exclude counterweight Mount weight 10.4 lb (4.7kg) Payload/Mount weight 2.60 Right Ascension worm wheel Φ88mm, 144 teeth aluminum Declination worm wheel Φ88mm, 144 teeth aluminum Right Ascension axis shaft Φ35mm steel Declination axis shaft...

  • Page 35: 8408 Hc Menu Structure

    ® Appendix B. Go2Nova 8408 HC MENU STRUCTURE MENU Select and Slew Solar System Mercury Venus Mars Jupiter Saturn Uranus Neptune Moon Deep Sky Objects Named Object Messier Catalog NGC Catalog IC Catalog UGC Catalog Caldwell Catalog Abell Catalog Herschel Catalog Stars Named Stars Binary Stars...
  • Page 36 Alignment Pole Star Position One Star Alignment Two Star Polar Align Three Star Alignment Polar Iterate Align Solar System Align Display Model Error Clear Alignment Data Settings Set Time and Site Set Beep Set Display Set Guiding Rate Set Tracking Rate Meridian Treatment Track Below Horizon Set Eyepiece Light...

  • Page 37: Appendix C. Firmware Upgrade

    Appendix C. Firmware Upgrade The firmware in the 8408 hand controller and motor control boards can be upgraded by the customer. Please check iOptron’s website, www.iOptron.com, under the product page or Support Directory, select CEM25 or CEM25 EC, for detail.

  • Page 38: Appendix D. Computer Control An Cem25 Mount

    Appendix D. Computer Control an CEM25 Mount The CEM25 mount can be controlled by a SmartPhone, a Tablet or a computer. It is supported by two types of computer connections:  Connect to a computer via RS232 serial port. An optional RS232 to USB adapter (iOptron part #8435) is needed if your computer does not have a serial port, like most of the laptops on the market today.

  • Page 39: Appendix E. Go2Nova ® Star List

    ® Appendix E. Go2Nova Star List Messier Catalog This table is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article List of Messier objects...
  • Page 40 Named Star List 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 41 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 42 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 43 Deep Sky Object List ID No. OBJECT NGC # Messier# A(Abell) U(UGC) ID No. OBJECT NGC # Messier# A(Abell) U(UGC) Andromeda Galaxy Hind's Variable Nebula 1555 Barnards Galaxy 6822 Hubble's Variable Nebula 2261 Beehive Cluster 2632 Integral Sign Galaxy 3697 Blackeye Galaxy 4926 Jewel Box Cluster...
  • Page 44 Double/MultiStar List 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 45: 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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