LXD75 Autoguiding Problem
Posted 20 March 2013 - 10:31 PM
I have a 8-inch Newtonian that I use with my Meade LXD75 mount. I try to autoguide using an Orion Starshoot autoguiding camera. About half the time it works great, but lots of times, it won't track in the declination direction. It almost always tracks in RA, but a lot of times, it simply won't even calibrate in the Dec direction. Sometimes even in the same session it will work for a while, then I'll go to a different part of the sky, try to re-calibrate, and the Dec direction is useless. My computer is communicating with the mount, it can move the mount in the Dec direction, and the weights are slightly unbalanced. I don't even know where to begin troubleshooting. Does anyone have any thoughts about why it wouldn't work?
Posted 21 March 2013 - 12:46 AM
Posted 21 March 2013 - 12:34 PM
With that being said, doing a drift alignment will negate the necessity of having to guide the DEC axis.
Posted 21 March 2013 - 01:46 PM
Posted 21 March 2013 - 04:21 PM
What firmware are you running?
Some versions of later firmwares send the DEC pulseguide commands to the RA motors.
Andrew Johansen Melbourne Australia
Posted 21 March 2013 - 09:01 PM
This might seem stupid, but. . . what is a drift align?
Actualy it is called a Declination Drift Alignment. Performing a Drift Alignment eliminates all tracking error in Declination. This is accomplished by observing stars in the south and west and then adjusting the mount in Altitude/Latitude and Azmuth.
Once all DEC drift is eliminated, your only tracking errors will be in RA, and those errors should be taken care of by your autoguide setup.
These links should get you started.
Posted 22 March 2013 - 03:17 PM
Posted 22 March 2013 - 03:23 PM
Don't confuse stupidity with ignorance. The latter is usually cleared up by admitting it and asking a question. Nature keeps the former in the gene pool for our amusement.
Posted 22 March 2013 - 05:33 PM
Posted 23 March 2013 - 10:59 AM