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The result of the star alignments is stored in the hand control even after the power has been shut off. 

You will only need to perform the star alignment once as long as these two criteria are met: 1. The 

telescope has been properly parked to one of the three Park Scope positions before turning off the 

power.  2.  The  telescope  setup,  including  the  mount,  has  not  been  moved. Accessory  change  is 

acceptable as long as it is done with great caution. When the hand control is turned on for the next 

time,  make  sure  to  choose YES  when  prompt  whether  to  start  from  the  park  position. The  time 

entered during initial setup should be based on the same source as last time. For example, if you 

enter the time on your watch during this observing session, the time you enter next time should also 

be read from your watch. 

P

ointing Accuracy Enhancement (PAE)

1.

2.

3.

4.

In the alignment screen, select 2-Star Align using the scroll keys. Press 

ENTER

 to confirm.

The SynScan

TM

 AZ will provide a list of stars available in your current sky for you to choose as the 

first  alignment  star.  Using  the  scroll  keys,  choose  a  star  you  are  most  familiar  with  and  press 

ENTER

.  The  telescope  will  not  automatically  slew  to  the  first  selected  alignment  star.  Use  the 

directional  buttons  to  manually  slew  the  telescope  to  point  to  the  object.  Now  look  through  the 

eyepiece  and  adjust  the  telescope  so  that  the  object  is  centered  in  the  field  of  view  of  the 

eyepiece. Press 

ENTER

 to confirm.  You will find that Rate 4 may be best suited for centering the 

object in the finderscope and Rate 3 or less for centering in the eyepiece view. 

SynScan

TM

 AZ will now provide a list of objects for the second alignment star. Choose a star using 

the  scroll  keys  and  press 

ENTER

. The  telescope  will  start  slewing  towards  the  chosen  object. 

When the slewing stops, adjust the telescope with the directional keys until the star is centered on 

the crosshairs in the finder scope. Repeat the centering procedure to center the object in the field 

of the eyepiece and press 

ENTER

 to confirm.

If  both  alignment  stars  are  properly  aligned,  "Alignment  Successful"  will  display  on  the  LCD. 

Otherwise, the warning "Alignment Failed" will show and the alignment will have to be done again. 

1.

2.

From a sky chart or a planetarium software, choose a bright object in the same area that you would 

like to perform the PAE in. This object should be a known object that is easy to identify. 

Find  this  PAE  object  in  the  SynScan  hand  control  database  and  go-to  the  object.  If  your  mount  is 

under the control of a planetarium software, click on the object to slew to it. 

Two-Star Alignment

The two star alignment procedure is similar to the Brightest Star alignment, except that the hand control 

will  not  prompt  for  you  to  select  a  directional  region  for  a  bright  star.  Below  describes  a  step-by-step 

procedure on how to perform the Two-Star Alignment:

After the star alignment, select an object in the object list and slew the telescope to the object in the sky. 

If you notice pointing error after slewing the telescope to the object, you may use the Pointing Accuracy 

Enhancement (PAE) to further improve the accuracy in the specific area where the object is located. The 

PAE function will only correct the pointing error in the 5-degree spanned area of the chosen star. Other 

regions of the sky will not be affected. 
The PAE function also makes it easier to find deep-sky objects that are too dim to spot. This can be 

done by selecting a bright object nearby to perform the PAE. Once the pointing accuracy of the specific 

area is enhanced the telescope will be able to accurately place the dim deep-sky object near the center 

of the eyepiece view.
Other  than  bright  named  stars,  you  may  also  choose  planets  or  objects  in  the  Messier,  NGC,  or  IC 

catalog as the PAE object.
Follow these steps to perform the PAE: 

Following is some pointers on how to choose appropriate alignment stars:

Select two stars that are at least 60 degrees apart in Azimuth. The more distance between the two align-

ment stars, the better accuracy the alignment will produce. Choosing two stars with similar altitude will 

also create a better result.

Summary of Contents for DOBSONIAN SYNSCAN

Page 1: ...INSTRUCTION MANUAL DOBSONIAN SYNSCAN 8 10 12 14 16 180610V6 3 08 ESC SETUP ENTER 1 2 3 4 5 6 7 8 9 0 TO UR UTILITY RATE M IC NGC PLA NET USER OBJECT ID 240412V1...

Page 2: ...ork to allow room for all parts to be unpacked While every effort has been made to ensure that the information contained in this instruction manual is accurate and complete no liability can be accepte...

Page 3: ...ew M5x60 Large washer for M5 screw Hex socket flat head screw 7x50 Hex socket head cap screw M8x25 Optical tube locking screw Allen Wrenches 2mm 4mm 6mm Phillips screw driver Fastening bolts and washe...

Page 4: ...ide panel Reinforce board Hex socket flat head screw 7x50 Round base assembly the bottom side Foot 12 Locate the hand control holder Using the two screws provided attach the holder to the latitude mot...

Page 5: ...x60 Large washer for M5 screw Hex socket head cap screw M5x60 Large washer for M5 screw Left side panel assembly Hex socket head cap screw M5x60 Large washer for M5 screw Left side panel assembly Hex...

Page 6: ...screw 7X50 Reinforce board Left side panel assembly When using GoTo and tracking function please tighten the handwheel Front panel L eft side panel Mount setup Locate the hand control holder Using the...

Page 7: ...rear end ring attached to the lower section of the optical tube Simply unthread and remove the eight Phillips head screws that connect the end ring to the tube Figure 1 and then pull the end ring off...

Page 8: ...threaded holes in the edge of the end ring with the holes in the end of the tube Then lower the entire assembly onto the tube Be careful to avoid finger pinching during this step There may be a bulge...

Page 9: ...s of the tube to the mounting platforms on the inner side of the side boards Lower the telescope tube and carefully place it on the base Tighten the locking screw to secure the tube in place Loosen th...

Page 10: ...er can now be turned in and out to focus When focus is reached lock it in position with the locking ring Fig b Choose a distant object that is at least 500 yards away and point the main telescope at i...

Page 11: ...object or even tour the skies at the touch of a button The user friendly menu system allows automatic slewing to over 42 900 objects Even an inexperienced astronomer can master its variety of feature...

Page 12: ...eft and right directional keys can also be used to move the text cursor when entering data to the hand control Dual Purpose keys Scroll Keys Fig g 1 These keys range from the middle to the bottom of t...

Page 13: ...R again to confirm After entering the current time the SynScanTM AZ will prompt DAYLIGHT SAVING Use the scroll keys to make the selection and press ENTER to confirm After setting the daylight saving S...

Page 14: ...m Enter your current local time using the 24 hr time mode e g 2 00PM 14 00 Press ENTER to view the time you just entered If it is incorrect press ESC to go back to the previous screen If correct press...

Page 15: ...al divisions in azimuth angle from the north northeast east southeast to northwest etc Select the region where the chosen star is located and press ENTER Each division covers 90 degree span in azimuth...

Page 16: ...r the object in the field of the eyepiece and press ENTER to confirm If both alignment stars are properly aligned Alignment Successful will display on the LCD Otherwise the warning Alignment Failed wi...

Page 17: ...ar region in the sky The SynScan hand control provides a short cut to quickly activate the PAE function After exiting from the object catalog instead of using the Utility menu press and hold down the...

Page 18: ...g has a set number of objects to choose from Use the numeric keys to select an object by entering its number Pressing ENTER will display its coordinate Primary information such as size magnitude and c...

Page 19: ...n the hand control in both Celsius and Fahrenheit Power Voltage This displays the power voltage detected from hand control in Volts HOME position This is the position where both Ax1 and Ax2 reads 0 If...

Page 20: ...next digit First set the value for R A Press ENTER to proceed to Dec Tracking Handset Setting This submenu allows adjustments of the brightness of the LCD backlit the darkness of the LCD lettering th...

Page 21: ...croll keys to browse through the User Object number until the number representing the object you wish to view is present Press ENTER to view its coordinate Press ENTER again if you wish to view the ob...

Page 22: ...ve Create a folder for all SynScanTM AZ related files on your computer and name it SynScan Visit the Firmware Download Support Page of the Sky Watcher website at http www SkywatcherTelescope net Downl...

Page 23: ...he hand control by removing the power plug and then re connecting it Repeat the update procedure By default the data communication rate between SynScanTM hand control and the PC is set to be 115kbps T...

Page 24: ...ow Information Park Scope PAE Clear PAE Data GPS PC Direct Mode Sidereal Rate Lunar Rate Solar Rate Stop Tracking Auto Select Sort By Time Version Temperature Power Voltage UTILITY FUNC IDENTIFY Named...

Page 25: ...e 7 600X Rate 8 800X Rate 9 1000X Sidereal Lunar Solar Dual Axes Tracking Brightest Star Alignment Two Star Alignment 25 user defined objects Complete M NGC and IC catalog partial SAO catalogues total...

Page 26: ...mmand conflicts with slew limits there will be no action Goto Ra Dec R34B 12CE Scope must be aligned If command conflicts with slew limits there will be no action Get Azm Alt Z 12AB 4000 10 characters...

Page 27: ...yte TrackRateLowByte 0 0 d Negative Alt tracking 80 3 17 7 TrackRateHighByte TrackRateLowByte 0 0 The number 35 is returned from the hand control 4 Sending a slow Goto command through RS232 to the han...

Page 28: ...28 III...

Page 29: ...FILTER FOR VIEWING THE SUN WHEN OBSERVING THE SUN PLACE A DUST CAP OVER YOUR FINDERSCOPE TO PROTECT IT FROM EXPOSURE NEVER USE AN EYEPIECE TYPE SOLAR FILTER AND NEVER USE YOUR TELESCOPE TO PROJECT SUN...

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