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STEP 3. Attach the mount 

Retract  the  2x  Azimuth  (Azi)  Adjustment  Screws  from  both  sides  to  leave  ample  space  for  the  alignment 
peg to fit in between the 2 Azi Adjustment Screws.  Remove the 2x Azi Locking Screws, with washers, from 
the  mount  base.    Secure  the  mount  head  by  tightening  the  Azi  Locking  Screws  into  the  M6  holes  on  the 
tripod.  An Allen wrench is included for convenience. 

      

 

Figure 12. Attach the mount 

Level the mount by adjusting the tripod legs. Use the build-in Bubble Level Indicator or an external leveler 
for this purpose. 

 

STEP 4. Adjust latitude 

Without any payload, slightly loosen the 4x Latitude Locking Screws.  Use the Latitude Adjustment Knob to 
set  the  correct  latitude  value,  as  displayed  in the  Latitude  Mark Window.   Insert the  Allen  wrench  into  the 
Latitude Adjustment Knob for more turning torque. 

 

Figure 13. Adjust latitude 

Two latitude ranges, 14~44° and 36~68°, can be set up for the mount head. To change the latitude range 
from one to the other, 

both

 the Latitude Position Bolt and the Latitude Locking Screws need to be moved to 

the correct locations (see photos below). 

Loosen  the  Latitude  Locking  Screws  just  enough  to  adjust  the  latitude  setting  to  40°.    Move  the  Latitude 
Locking Screws with washers (one on each side) to the new locations revealed, do not tighten them just yet. 

Allen wrench 

Azi. Adj. Screw 

Azi. Lock Screw 

Azi. Lock Screw 

Lat. Lock Screw 

Lat. Adj. Knob 

Lat. Mark 

Summary of Contents for 7603A

Page 1: ...iOptron GEM45 German Equatorial Mount Instruction Manual Product GEM45 7603A GEM45EC 7603ECA and GEM45G 7603AG...

Page 2: ...y when disengaging the gear switches Otherwise personal injury and or equipment damage may occur Any worm system damage due to improper operation will not be covered by iOptron s limited warranty If y...

Page 3: ...One Star Alignment 21 4 4 GOTO the Moon and Other Objects 21 4 5 Star Identification Function 21 4 6 Power Down Memorization 22 4 7 Turning Off the Mount 22 4 8 Putting the Mount Back into the Carryi...

Page 4: ...o Position 30 5 10 3 Search Zero Pos 30 6 Maintenance and Servicing 31 6 1 Maintenance 31 6 2 iOptron Customer Service 31 6 3 Product End of Life Disposal Instructions 31 6 4 Battery Replacement and D...

Page 5: ...stepper motor drive systems with our low power consumption technology Our new LiteRoc 1 75 tripod delivers rock solid stability in a lighter more compact package A 212 000 object library with star ide...

Page 6: ...Stainless steel counterweight shaft Internal iPolar electronic polar scope Built in iGuider autoguiding system on dovetail saddle GEM45G only GEM45 GPS module AC adapter 100V 240V 2X coiled control Ca...

Page 7: ...1 Power Panel on Rear of RA axis Figure 2 GEM45 Power Panel on Rear of RA axis POWER I O Power Switch DC 12V 5A DC power socket to power the mount 2 5mmX5 5mm center positive USB2 0 USB input port to...

Page 8: ...3 Ports on Dovetail Saddle On the back of the dovetail saddle there are one USB2 0 port and two DC 12V outputs Figure 4 Port on back of the dovetail saddle a GEM45G shown 1X USB 2 0 ports with standar...

Page 9: ...Figure 6 ST 4 Compatible Guiding Port Wiring...

Page 10: ...el current operation such as slewing ENTER Key Confirm an input go to the next menu select a choice or slew the telescope to a selected object Arrow Keys The arrow keys are used to control the movemen...

Page 11: ...o Zero Position using Goto Zero Position or Search Zero Position command User Position The mount is pointed to a user defined position which could be a particular celestial object or simply a position...

Page 12: ...ing mount is tracking at king speed CSTM mount is tracking at a custom user defined speed 13 Slew speed The mount has 9 slew speeds 1X 2X 8X 16X 64X 128X 256X 512X MAX 4 sec 14 Operation Mode EQ indic...

Page 13: ...kage The mount head is shipped with the R A Gear Switch unlocked to protect the worm gear system Turn the Gear Switch 90 to lock the R A gear system before removing it from the box Figure 10 Mount in...

Page 14: ...e 4x Latitude Locking Screws Use the Latitude Adjustment Knob to set the correct latitude value as displayed in the Latitude Mark Window Insert the Allen wrench into the Latitude Adjustment Knob for m...

Page 15: ...e Latitude Adjustment Knob while holding the brass eyebolt until it lines up with the Position Bolt Secure the Latitude Position Bolt Figure 15 Change latitude range STEP 5 Install Counterweight CW Sh...

Page 16: ...ance the Payload After attaching the scope and accessories the mount head assembly must be balanced in both DEC and RA axes to ensure minimum stresses on the mount driving mechanism CAUTION The telesc...

Page 17: ...supply to the DC12V 5A socket which is located at the end of the RA axis Figure 19 Power connection Connect the Go2Nova 8407 Hand Controller to the HBX port on the mount main board Plug GPS module int...

Page 18: ...te information screen will be displayed Set Local Time The time will be updated automatically when the GPS receiver has established its link to the satellites In the event that the GPS module is unabl...

Page 19: ...S and use the number keys to change the numbers It is always a good idea to do your homework and get longitude and latitude coordinates before traveling to a new observation site The site coordinates...

Page 20: ...e HC instruction to move Alignment Star A to the center of the eyepiece using a combination of the Latitude Adjustment Knob and the or buttons Press ENTER to confirm when the star is centered Next sel...

Page 21: ...he slewing speed Press the STOP 0 button to start tracking 4 3 One Star Alignment After the mount set up perform a One Star Align to correct the Zero Position discrepancy or linear error Press MENU Al...

Page 22: ...d your observation simply turn the mount power off and disassemble the mount and tripod If the mount is set up on a pier or inside an observatory it is recommended that you return the mount to the Zer...

Page 23: ...Objects consists of 92 popular deep sky objects with their common names A list of named deep sky objects is included in Appendix C Messier Catalog consists of all 110 Messier objects NGC Catalog consi...

Page 24: ...ron AccuAlignTM polar scope In the Northern Hemisphere the position of Polaris is displayed while in the Southern Hemisphere the position of Sigma Octantis is shown 5 3 2 One Star Alignment Press MENU...

Page 25: ...ign The HC will display a list of bright alignment stars near the meridian as Alignment Star A Follow the HC instructions to move Alignment Star A to the center of the eyepiece using a combination of...

Page 26: ...oguiding align the polar axis carefully Select an appropriate guiding speed The latest firmware allows you to set the R A and DEC guiding speed differently The R A guiding speed can be set between 0 0...

Page 27: ...cope vertically Zenith Position Current Position will park the scope at its current position Alternatively you can enter any altitude and azimuth combination for Custom Parking Pos When the mount is t...

Page 28: ...g Because the variations are regular it is possible to record the corrections required to cancel out the worm gear variations and to play them back to correct the periodic error caused by the variatio...

Page 29: ...the C 2012 ISON has an orbit parameter No Name Year M Day q e I H G C 2012 S1 ISON 2013 11 28 7960 0 0125050 1 0000030 345 5088 295 7379 61 8570 6 0 4 0 Select Add a New Comet to add a new one The ha...

Page 30: ...ts Zero Position 5 10 2 Set Zero Position This set the Zero Position for the firmware The Zero Position reference will be an undefined value after firmware upgrade or it may lost during power outage o...

Page 31: ...purchase information and daytime telephone number We have found that most problems can be resolved by e mails or telephone calls so please contact iOptron first to avoid returning the mount for repair...

Page 32: ...step Motor resolution 0 08 arc seconds Slew speed 1 2 8 16 64 128 256 512 MAX 4 5 sec Power consumption 0 6A Tracking 0 9A GOTO Power requirement 12V DC 5A AC adapter 100V 240V included Polar Scope I...

Page 33: ...y Venus Mars Jupiter Saturn Uranus Neptune Sun Moon Deep Sky Objects Named Object Messier Catalog NGC PGC Caldwell Catalog Abell Catalog Herschel Catalog Named Stars Double Multi Stars Hipparcors Cata...

Page 34: ...n of Pole Star Set Tracking Rate Sidereal Rate Lunar Rate SolarRate Custom Rate King Rate Polar Interate Align Set Altitude Limit Set Parking Position Horizon Position 1 Zenith Position 1 Set Position...

Page 35: ...Clear All Comets User Defined Comet Edit User Objects Add a New Object Browse Objects Delete an Object Clear All Objects Other Objects Park Telescope PEC Options Record PEC PEC Playback PEC Data Integ...

Page 36: ...ve Nebula 67 Phantom Streak Nebula 22 Christmas Tree Cluster 68 Pinwheel Galaxy 23 Cigar Galaxy 69 Pleiades 24 Cocoon Nebula 70 Ring Nebula 25 Coma Pinwheel 71 Rosette Nebula 26 Copeland Septet 72 Sat...

Page 37: ...Messier Catalog This table is licensed under the GNU Free Documentation License It uses material from the Wikipedia article List of Messier objects...

Page 38: ...lcor 72 Atria 121 Gomeisa 170 Mintaka 24 Alcyone 73 Avior 122 Graffias Zeta 171 Mira 25 Aldebaran 74 Azha 123 Groombridge 1830 172 Mirach 26 Alderamin 75 Barnard s Star 124 Gruid 173 Mirfak 27 Alfirk...

Page 39: ...Regulus 219 Scheat 235 Taygeta 251 Yed Posterior 204 Rigel 220 Schedar 236 Tejat Posterior 252 Yed Prior 205 Rigel Kentaurus A 221 Seginus 237 Thuban 253 Zaniah 206 Rigel Kentaurus B 222 Shaula 238 Th...

Page 40: ...er 20 Cepheus Cep 64 Phoenix Phe 21 Cetus Cet 65 Pictor Pic 22 Chamaeleon Cha 66 Pisces Psc 23 Circinus Cir 67 Piscis Austrinus PsA 24 Columba Col 68 Puppis Pup 25 Coma Berenices Com 69 Pyxis Pyx 26 C...

Page 41: ...pus 15123 5206 242304 24 HIP 27072 Gamma Leporis Lupus 05445 2227 170759 25 HIP 26549 Sigma Orionis Orion 05387 0236 132406 26 HIP 85667 HD 158614 Ophiuchus 17304 0104 141702 27 HIP 74376 Kappa1 Lupi...

Page 42: ...ydrae Hydra 11053 2718 179514 78 HIP 76669 Zeta Coronae Borealis Corona Borealis 7 CrB 15394 3638 64833 79 HIP 99770 b3 Cygni Cygnus 29 Cyg 20145 3648 69678 80 HIP 101027 Rho Capricorni Capricornus 11...

Page 43: ...HIP 111546 8 Lacertae Lacerta 22359 3938 72509 129 HIP 29151 HD 42111 Orion 06090 0230 113507 130 HIP 107253 79 Cygni Cygnus 21434 3817 71643 131 HIP 88136 41 Draconis Draco 18002 8000 8996 132 HIP 8...

Page 44: ...747 95795 181 HIP 3885 65 Piscium Pisces 00499 2743 74295 182 HIP 93371 HD 176270 Australis 19011 3704 210816 183 HIP 36345 HD 59499 Puppis 07289 3151 198038 184 HIP 108364 HD 208947 Cepheus 21572 660...

Page 45: ...iameter that is blocked by the dovetail saddle Another larger hole 5mm is located on the side of the DEC gear housing There is a set screw inside the 3mm hole which locks the gear meshing adjustment s...

Page 46: ...ten the set screw in the small hole to LOCK the gear screw important before test the mount Adjust again if needed but no more than turn in total If you feel there is free play between the worm and gea...

Page 47: ...iPolar under Camera catalog in computer Device Manager 4 Goto www ioptron com to download iPolar software and save on your computer 5 The iPolar software needs Windows 7 8 1 10 or later version 32 bi...

Page 48: ...e camera included If you are using other planetarium software you can install iPolar ASCOM driver 1 Connect iGuider to a PC The iGuider guiding system is connected internally to the mount main USB por...

Page 49: ...r ASCOM Camera from the camera selection menu PHD2 will fill the pixel size 3 75um automatically if the camera is connected to the computer Enter 120mm into guide scope focal length tab and click Next...

Page 50: ...nt ASCOM is selected A default guiding speed is 0 5X Click Next In next Adaptive Optics Device setting window select None and go to Next Save the Profile Name Do not check Build dark library You may d...

Page 51: ...Make sure you remove the lens cover You may also check the iGuider camera during daytime by checking Show Preview in iOptron iGuider ASCOM window Adjust Exposure Time and focuser to show the image 3...

Page 52: ...star to be shown in the main window 6 Click on the star to look at the Star Profile Fine adjusting the Focus Adjuster to bring the Peak to maximum value 7 Slew the DEC to expose the Locking Screw if i...

Page 53: ...er and control boards can be upgraded by the customer Please check iOptron s website www iOptron com under Support Documents of the GEM45 product page The mount firmware is upgraded via USB port on th...

Page 54: ...GEM45 7434 The mount can be controlled via ASCOM protocol Windows OS SmartPhone Pad and Mac OS wirelessly See iStarFi Instruction Manual for detailed information To control the mount via ASCOM protoco...

Page 55: ...d to abuse misuse mishandling or unauthorized repair Further product malfunction or deterioration due to normal wear is not covered by this warranty IOPTRON DISCLAIMS ANY WARRANTIES EXPRESS OR IMPLIED...

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