Question about Meade LX200GPS Telescope

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My telescope-Meade LX200GPS when tracking the star,it can catch it in some minutes ,but later the star out of eyepiece,is it not tracking the goal? when I tracking the jupiter,the telescope can find the goal--out of the eyepiece?beside when I tracking the difference objects,I have choose the right tracking rate. I don't know where the problems is? when I tracking the satellite,the system calculate its rises time is far from the SkyMap ?

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  • guangyaowang Nov 17, 2010

    thank you very much ,what you have advised I have done ,and the situation still not changed .yesterday ,I read a book which said that maybe GPS recevier which use SONY GXB5210 chip ,how can I know wheather my telescope use this chip(GXB5210)?

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To track the scope must:

1. Have a Calibrate motors done

2. Be well Trained using the training routine

3. Must have the correct TIME, DATE, and SITE, and Daylight Savings Time

4. Must be properly aligned on two stars.

Have you done all of the setup procedures listed in the manual? Locate a local Astronomy club and the members will help you with your telescope.

Posted on Nov 13, 2010

  • Joe Lalumia aka TelescopeMan

    The GPS has nothing to do with tracking. In fact you can just bypass the GPS and do a two star alignment. The poor tracking is because you have not Calibrated the motors, and TRAINED the drives. Read the manual and do all of the setup procedures.

    You only need to train drives about once per year, Calibrate motors should be done with the same power supply you use at night. DO NOT USE the internal batteries, by a separate 12 volt power pack. The scope wants smooth regulated power. Once the internal batteries drop to about 60% of charge the hand controller can start giving errors.

    Train the drives!

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Is this an LX200 or an LX255 which I have never heard of.

Does the scope focus on a distant object during the day time? If YES nothing is wrong with the scope.

The eyepieces determine what the magnification will be. The eyepiece with the largest number on it is the LOWEST magnification. Meade has a web site with all of their manuals here:

http://www.meade.com/manuals/index.html

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My meade LX200GPS can't track the stars? wheater the bad weather of observation points will affect the accuracy of automatic alignment? how can I improve the tracking


You must Calibrate motors using the same power source as you use at night outside, then do a TRAIN drives. Some of these scopes also have a Calibrate Sensors -- and some do not.

Then do a two star alignment and center both alignment stars. Daylight Savings Time = Yes right now in the USA, check that it is set to YES.

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I have a meade lx200gps 10" scope. The ra up is not responing. the down is working only. After initializing and fining north the auto star says stalled motor.


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The Calibrate motors routine adjusts the motors for the power supply being used.

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Meade LX200GPS The scope does not complete the 'Auto Alignment'


Once the scope has taken a GPS fix and knows TIME, and SITE, and you do a two star alignment your alignment stars overide any automatic alignment issues.

You could turn off the GPS put in Time, Date, and Site, do a two star alignment and everything would be fine. Centering the alignment stars is the "trick". Apparently the scope also finds NORTH OK, or the alignment stars would be way off. Since you pre-level the tripod already the software can FAIL on "tilt" and you still get good gotos.

I would not worry about it, especially since your gotos seem perfectly fine.

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I've made every possible alignment on my 10 inch Meade LX200GPS telescope, training,set-up, calibration, etc...but when I slew to a star....it is ALWAYS very far off in Dec....though RA seems to be well...


You might want to join the following Yahoo group:
http://tech.groups.yahoo.com/group/LX200GPS/

I am not familiar with the LX200, but there are probably folks on the Yahoo group that can help.  The only thing I can think of is if you are using a wedge and the wedge isn't at the correct angle (should match your lattitude).  Or you are not using a wedge and the Meade controller thinks that you are.  But one would think the calibration would solve that.

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Calibrating & Aligning the Meade 10" LX200 GPS Telescope in the Southern Hemisphere


  1. Do a Calibrate Sensors
  2. Do a Train Drive in RA and also DEC
This makes sure that the scope is calibrated properly.

  1. Do an AUTOMATIC ALIGN
  2. when asked to center star, look for the BRIGHTEST star that is close to the scopes field of view. It will be that star you need to used the arrow keys on to centre it in the scope eyepiece and press enter.
  3. This star can be as much as a HANDS distance away from the centre of view
  4. If you cannot identify the star it is asking you to use, press the SCROLL DOWN key to choose another star, keep doing this until you see a star you recognise.
That's it!

You can also hold down the MODE key for about 4 seconds and scroll through the scope info. Make sure you have the correct location coordinates ( Lat/Long) and the correct time set.

Select a bright object first such as a planet and GOTO it. Once you have manually centered it in the eyepiece, press ENTER and hold it for 6 seconds, the handset will say " Press ENTER to sync", press enter and you have updated the scope with the coordinates of that object.

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Check the time clock battery - it is behind the front panel. If it is dead, then the clock is off, and the alignment will not complete properly. Regular watch lithium coin cell.

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