Question about Meade 8" LX90 Schmidt-Cassegrain Telescope non-UHTC w/Autostar Suite-LPI - MEA 0810-90-40

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Inability for the telescope align

2 years old, minimal use. it takes a GPS fix and then goes to a manual alt-azimuth alignment for true north and horizontal declination rather than automatically doing this. the result is inaccurate alignment. can anyone help?

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Replace the battery for the GPS.

Start from scratch.

Reset the hand controller, calibrate motors, train drives, calibrate sensors.

Make sure you have either fresh batteries, or better a seperate 12 volt power pack. The above will eleiminate everything except an actual BROKEN electronic part (such as a bad gps board).

If it still will not align using the gps, time to send it back to Meade for repairs. Make sure you have the latest firmware in the hand controller which is 43Eg. You can download the firmware using the UPDATER free software here:
http://www.meade.com/support/downloads.html

Posted on May 08, 2010

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I have a Meade 12" LX200R. The auto alignment procedure fails to find true north. It appears to be about 90 degrees west of north. At the same time, my Autostar II control goes haywire at times. I've...


Do a reset ON THE HAND CONTROLLER AND RELOAD THE LATEST firmware. Make sure you are using a separate 12 volt power pack and NOT the internal batteries.

After the reset do a Calibrate motors-- you must also TRAIN the drives. Read the manual for the procedure. Then take it out and do a two star alignment, using a separate 12 volt power supply.

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This scope does NOT need to be polar aligned --

Here is the manual:
http://www.celestron.com/c3/images/files/downloads/1228334587_nexstargt.pdf

This is an ALT AZ goto scope. Read the manual above. You use the hand controller to move the scope in Altitude and Azimuth(left-right).

You must align it on 2 stars in order for it to has successful gotos.

Read the manual above.

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

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HOW DO I USE THE TELESCOPE


Hi,

he first thing you will need to know is does your telescope have a polar axis or not, that is, is it intended to track, or is it merely a point and look, or what we call Alt-Az. Alt means altitude and Az means azimuth, where Alt is the distance above the horizon, and Az is the direction in a circle around the horizon. If you have an Alt-Az mount, just skip the polar alignment step. If you have a polar axis, that is, your telescope is intended to track the stars, then find north, and make sure the polar axis is approximately lined up in that direction. It does not have to be too accurate, but make sure it is pointing pretty close to north. If you are not sure where north is, either use a magnetic compass, or try to find Polaris, the North Star.

Thanks.

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The only reason you would want to polar align is to do astro-photography which will be difficult from your location.

Use the scope in normal ALT AZ configuration. Calibrate motors, Train Drives, make sure time, date, site, are set correctly. The Calibrate sensors function sets the magnetic deviation for your SITE. Not really that important because when you center two alignment stars everything is corrected anyway.

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Be sure that the Azimuth Axis is Lock, you migth want to try and move the telescope in the Azimuth to make sure it is it is locked. Be carful not to force it. I have seen on some post where the locking part of the Azimuth somtimes breaks. and the Azimuth Axis will just spin freely Locked down or not.

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