On Friday, March 27, 1998 12:06 AM, Douglas Schmutz

> Thanks to everyone that has responded to this problem. John Piper told me
> today ( from Meade's Engineers ) that when the east key is pressed that
> this slows the RA motor speed in 1/2 not stopping it so that loading is
> maintained on the worm gear. He is sending me a new hand controller N/C (
> very nice as the controller is over 1 year old ). I know this is somewhat
> OT, But here goes I even changed the alignment of the ST-4 head 90 deg. to
> see if the guiding problem was in the relays. I was able to guide in dec.
> with very low errors and the RA errors stayed in a ping pong pattern
> 4,3,-E,-3 ECT. Anyone know how fast the LX200 can receive and execute drive
> commands ? Maybe I can get it to guide with slower exposures. Any
> suggestions ? The scope tracks well it RA when manually guiding so I don't
> have to make that many corrections but I would like to be able to
> autoguide. I will check out the articles on electrical concerns.
>
> Thanks
> Doug
> ----------

> R. A. wrote: Thursday, March 26, 1998 9:38 PM

>> I have been somewhat reluctant to get involved with this issue. I am not
>> an expert on the RA drive. (I know quite a bit about the Dec drive)


<<much accurate and useful information snipped>>

Doug, I believe Doc G is accurate in his analysis, right down to the
RA motor stopping upon pressing the E button. Why this seems to
contradict what Meade says I can't explain because even in the
Alt-Az Mode, the LX-200 stops both drives (rather than one) with
an E key depress. Perhaps older LX-200 ROMS....

As Meade is sending you a hand controller, I would go ahead and
try it- who knows, maybe you'll get lucky. If you don't, the first place
I'd look is in the RA drive adjustments recommended by Doc G.


> > I hope these comments will help explain the possible problems with the RA
> > drive.
> >
> > Doc G <http://www.mailbag.com/users/ragreiner>
> >
>
>


--
Michael Hart
Husen Observatory

View index by [date] [author] [subject]
Previous message: Re: [M]: RA trouble LX200 12", Bill Arnett
Next message: Re: [M]: RA trouble LX200 12", Douglas Schmutz
Next message in thread: Re: [M]: RA trouble LX200 12", Douglas Schmutz
Previous message in thread: Re: [M]: RA trouble LX200 12", Bill Arnett