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Orion Sirius EQ?G, Manual, Page: 26 / 28

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Orion Sirius EQ?G Manual Download Page 26

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Summary of Contents for Sirius EQ?G

Page 1: ...B 02 06 Providing Exceptional Consumer Optical Products Since 1975 Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 89 Hangar Way Watsonville CA 95076 Orion Sirius EQ G Equatorial Mount 9995 ...

Page 2: ...t shaft lock lever Counterweight lock knob Counterweight Counterweight shaft Toe saver Tripod center support tray Tripod leg Mounting plate lock knobs Control panel Right ascension lock lever Right ascension setting circle Latitude scale Latitude adjustment L bolts Hand controller cable Center support shaft GoTo hand controller Leg lock levers ...

Page 3: ...ntroller Box 3 GoTo Hand Controller Qty Item 1 GoTo hand controller 1 GoTo hand controller cable for Sirius EQ G 1 GoTo hand controller cable for Atlas EQ G 1 GoTo hand controller bracket 1 Computer interface cable RS 232 1 Wire clip 3 Assembly Refer to Figure 1 as needed during the assembly process 1 Stand the tripod legs upright and spread the legs out as far as they will go Make certain that th...

Page 4: ...e of the mounting plate with the central groove will be facing up Figure 3 Use a small wrench to secure the tube rings to the mounting plate Note The tube ring mounting plate included with the Sirius EQ G includes four optical axis offset adjustment screws these are the socket head cap screws located at each cor ner of the mounting plate These adjustment screws will be explained further in Appendi...

Page 5: ...sate for that motion allowing you to easily track the movement of astronomical objects thereby keeping them from drifting out of your telescope s field of view while you re observing This is accomplished by slowly rotating the telescope on its right ascension R A axis using the built in motor drive But first the R A axis of the mount must be aligned with the Earth s rotational polar axis a process...

Page 6: ...Dec axes The Polar Axis Finder Scope The Sirius EQ G mount comes with a polar axis finder scope Figure 7 housed inside the right ascension axis of the mount When properly aligned and used it makes accurate polar alignment quick and easy to do Unthread the cover at the rear of the mount s right ascension axis and remove the cap on the front opening of the equatorial mount Figure 5 to view through t...

Page 7: ...properly positioned within the reticle you are precisely polar aligned Retighten the knob underneath the equatorial mount From this point on in your observing session you should not make any further adjustments in the azimuth or the latitude of the mount nor should you move the tripod Doing so will undo the polar alignment The telescope should be moved only about its right ascension and declinatio...

Page 8: ... clicks into place The nylon hook and loop strips have been provided so the dual axis hand controller can be placed in a convenient posi tion on the mount when not in use Place the hooks strip on the back of the dual axis hand controller and the loops strip on the mount in a convenient location Make certain the loca tion of the strip on the mount will not cause the dual axis hand controller to int...

Page 9: ... Right directional button Warning Never look directly at the Sun through your tele scope or its finder scope even for an instant without a professionally made solar filter that completely covers the front aperture of the instrument or permanent eye dam age could result Young children should use this telescope only with adult supervision Lunar rate tracking is used to track the Moon at its rate of ...

Page 10: ...ide button begins flash ing The controller will now operate properly in the Southern Hemisphere You can switch back to Northern Hemisphere mode by using the same button combination As long as the controller is operating in Southern Hemisphere mode the Set button will illuminate Power Conservation In the interest of conserving the amount of power drawn by the Sirius EQ G mount the Dec motor will en...

Page 11: ...e using a portable battery like the Orion Dynamo use the 12V DC power cable supplied with your mount male ciga rette lighter plug on one end standard 12V DC power plug on other end to connect the battery to the 12V DC power jack on the mount Figure 11 Make sure the Dynamo s power switch is in the on position after connecting Then to turn the mount and GoTo hand controller on simply press the power...

Page 12: ... to 25 objects in the User Defined database ID button Identifies the object the mount is currently pointing to NGC IC M Planet and Object buttons Allow direct access to catalogs and databases of over 13 400 objects GoTo Hand Controller Operation This section provides a guide for initial setup and alignment of the Sirius EQ G mount with the GoTo hand controller Initial Setup 1 Perform the polar ali...

Page 13: ...it to the Main Menu You are now ready to begin the alignment procedure Alignment In order for the GoTo hand controller to accurately locate and point to objects in the sky it must first be aligned on known positions stars With the supplied information the controller can replicate a model of the sky and the movements of astro nomical objects There are three ways to align depending on your demand fo...

Page 14: ...piece and adjust the position of the telescope again using the directional buttons so the chosen star is centered in the field of view of the eyepiece Press ENTER to confirm the star is centered 3 Once the alignment star has been entered and alignment is complete the hand controller will display Alignment Successful Press ENTER to access the Main Menu Tips for Choosing Alignment Stars If possible ...

Page 15: ...w Object Press ENTER once more to have the telescope slew to the object PLANET This shortcut button takes you straight to the Planets submenu in the hand controller s database Use the scroll but tons to scroll through the list of planets and the Moon in our solar system Press ENTER to display the chosen planet s coordinates Press ENTER again and the hand controller will ask View Object Press ENTER...

Page 16: ...ly covers the front aperture of the instrument or permanent eye dam age could result Young children should use this telescope only with adult supervision Auto Guide Speed When using an autoguider this sets the guiding speed to 1 125x 1 25X 1 5X 1 75X or 2X sidereal rate Using the User Defined Database The GoTo hand controller allows you to save up to 25 objects in the User Defined database You can...

Page 17: ...e autogu ider Autoguiding speed can be adjusted using the Auto Guide Speed function in the Setup Menu Updating the GoTo Hand Controller s Firmware From version 3 0 and up the GoTo hand controller s firmware can be updated over the internet Users can download firm ware updates from Orion s website www OrionTelescopes com System Requirements GoTo hand controller version 3 0 or greater Windows95 or l...

Page 18: ...e firmware update procedure By default the data communication rate between the GoTo hand controller and the computer is 115kbps The RS 232 port on some PCs may not support this high data transfer rate If the firmware update procedure fails after a few tries try reducing the data transfer rate by pressing the SETUP but ton on the hand controller This will reduce the data transfer rate to 9 6kbps Th...

Page 19: ...19 Sirius EQ G GoTo Hand Controller Menu Tree ...

Page 20: ...t to the following two conditions 1 this device nay not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Changes of modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Note This equipment has been tested and found to comply wi...

Page 21: ...causing the pointing inac curacy To determine if the inaccuracy is caused by cone error simply move the telescope about the R A axis by pressing the Left or Right direction button If the star can be moved into the eyepiece field of view without adjusting the Dec axis it is likely that cone error exists in your telescope setup Cone Error Calibration Procedure 1 Insert an illuminated reticle eyepiec...

Page 22: ...ng to the results of step 11 If Polaris moves toward the center when the telescope is pushed as indicated in Figure 18 loosen the adjustment screws near the front of the tube and tight en the adjustment screws closer to the back of the tube Figure 19a If Polaris moves away from the center when the telescope is pushed as in Figure 18 loosen the adjust ment screws near the back of the tube and tight...

Page 23: ... Perform an accurate polar alignment using the polar axis finder scope 2 Manually point or electronically slew the telescope mount ed on the Sirius EQ G to a star with a small value Dec coordinate Dec between 10 and 10 This object will be used as the guide star 3 Activate Sidereal Tracking from the Setup menu see Setup Functions Once tracking has initiated press ESC to return to the Setup menu 4 R...

Page 24: ...Tracking then PEC Sidereal The Sirius EQ G will play back the corrections you made during the PEC training cycle and start tracking with periodic error compen sated for Note The Sirius EQ G will continue to track in the PEC sidereal mode until another tracking mode is selected If the power is turned off while the Sirius EQ G is in the PEC side real mode the hand controller loses synchronization wi...

Page 25: ...rackRateHighByte TrackRateLowByte 0 0 b Negative Azm tracking 80 3 16 7 TrackRateHighByte TrackRateLowByte 0 0 c Positive Alt tracking 80 3 17 6 TrackRateHighByte TrackRateLowByte 0 0 d Negative Alt tracking 80 3 17 7 TrackRateHighByte TrackRateLowByte 0 0 4 The number 35 is returned from the hand controller Sending a Slow GoTo Command 1 Convert the angle position to a 24 bit number Example if the...

Page 26: ...26 Appendix D Standard Time Zones of the World ...

Page 27: ...27 ...

Page 28: ... any warranted instrument that proves to be defective provided it is returned postage paid to Orion Warranty Repair 89 Hangar Way Watsonville CA 95076 If the product is not registered proof of purchase such as a copy of the original invoice is required This warranty does not apply if in Orion s judgment the instrument has been abused mishandled or modified nor does it apply to normal wear and tear...

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