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10" LX90 motor strain   Message List  
Reply | Forward Message #81100 of 82008 |
Re: 10" LX90 motor strain

Well, not to beat a dead horse, but...

I checked the tracking again...it DOES cut out sometimes after using the cursor
keys. But if you back out first using mode (as you said), it works.



--- In lx90@yahoogroups.com, "John Anderson" <john.anderson19@...> wrote:
>
>
> Well, I can't seem to find "clean polar align" in the menus. If I set the
mount to "polar" (under "telescope") and then do an "easy" align, sometimes it
works fine and sometimes it tries to put the tube through the forks. The mount
set to "Alt-az" does the same.
>
> This is indoors, without the gps, setting the location and time manually.
Outdoors, pressing "0" at the prompt after Autostar boots to do the initial
align using the gps, it always works ok.
>
> After a goto and then after using the cursor keys, the drive motors stay on.
So it doesn't seem to have that problem...although the tracking is not great, so
maybe it has that timing error you mentioned.
>
> It says "59Ef" during bootup, so I guess I have the buggy firmware.
>
>
> --- In lx90@yahoogroups.com, "johansea" <johansea@> wrote:
> >
> > Gday John
> >
> > --- In lx90@yahoogroups.com, "John Anderson" <john.anderson19@> wrote:
> >
> > > Alignment works ok outdoors.
> >
> > Does it in Polar???
> > If you do a "clean Polar align", the scope should try to drive itself into
the forks. I tested this on a new LX90GPS scope, but admittedly
> > we didn't get a fix first. From the code, i cant see how getting a fix will
prevent it tho. My ETX crashes every time.
> >
> > AltAz 2 star works, but as you are centring the stars, you should see/hear
the motors shut off. Quick centring allows you to get an Align Successful, but
tracking and gotos deteriorate over time.
> >
> > Andrew Johansen Melbourne Australia
> >
> > But inside (no gps...just manually setting location and date) is where I
had the problem.
> > >
> > > I haven't checked to see if the drives turn off when slewing. Since the
tracking drives are audible (ear on the fork), it should be easy to test
tonight.
> > >
> > > It sounds like there's no fix available from Meade...too bad the software
isn't as good as the optics, which seem pretty decent.
> > >
> > >
> > > --- In lx90@yahoogroups.com, "johansea" <johansea@> wrote:
> > > >
> > > > Gday John
> > > >
> > > > You left out
> > > > " although things drift out of the field of view fairly quickly"
> > > > I saw yr CN Post ;-)
> > > >
> > > > Your symptoms scream that you have a 59Ef Handbox
> > > > The polar align in this firmware is broken if you do a clean align
> > > > Ie, If you start in Polar home, it tries to drive the OTA through the
forks. This is a known bug.
> > > > As to drifting, it may not be your alignment
> > > > There is another bug where the clock is losing up to 2 mins per hour
> > > > and if you are AltAz, using the slew keys when tracking actually turns
off the motors.
> > > > I have a patch for the align bug, but so far, we cant ( correctly ) fix
the slow clock problem or the motors stopping, hence i havent released the
patch.
> > > > We have found you can work around the motors stopping by modeing back up
to the main menu, then slewing, but that's a Kludge the owner of a new scope
shouldnt have to put up with.
> > > >
> > > > Andrew Johansen Melbourne Australia
> > > >
> > > >
> > > > --- In lx90@yahoogroups.com, "John Anderson" <john.anderson19@> wrote:
> > > > >
> > > > > I have a new 10" LX90 ACF...twice I've strained the motors and caused
them to make bad noises (the scope slewed past vertical doing a test align
indoors, and then outside I had a power cable wrap-up around the base).
> > > > >
> > > > > It still seems to work fine...tracking is smooth at high power. I
guess I'm wondering if there is a specific check I can do to see if I damaged
the gears or motor.
> > > > >
> > > > > Thx
> > > > >
> > > >
> > >
> >
>





Sat Jul 11, 2009 3:42 am

john59and
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Forward
Message #81100 of 82008 |
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I have a new 10" LX90 ACF...twice I've strained the motors and caused them to make bad noises (the scope slewed past vertical doing a test align indoors, and...
John Anderson
john59and
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Jul 10, 2009
6:30 pm

One thing I like to do is use the LANDMARK feature. Set a few LANDMARKS, I like to set three of them. Select: Objects / Landmark / Add Then start a tour or...
AstronomyW4WMM@...
w4wmm
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Jul 10, 2009
6:46 pm

Gday John You left out " although things drift out of the field of view fairly quickly" I saw yr CN Post ;-) Your symptoms scream that you have a 59Ef Handbox ...
johansea
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Jul 10, 2009
10:39 pm

Thanks for the info Andrew Alignment works ok outdoors. But inside (no gps...just manually setting location and date) is where I had the problem. I haven't...
John Anderson
john59and
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Jul 10, 2009
11:37 pm

Gday John ... Does it in Polar??? If you do a "clean Polar align", the scope should try to drive itself into the forks. I tested this on a new LX90GPS scope,...
johansea
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Jul 11, 2009
1:35 am

Well, I can't seem to find "clean polar align" in the menus. If I set the mount to "polar" (under "telescope") and then do an "easy" align, sometimes it works...
John Anderson
john59and
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Jul 11, 2009
3:35 am

Well, not to beat a dead horse, but... I checked the tracking again...it DOES cut out sometimes after using the cursor keys. But if you back out first using...
John Anderson
john59and
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Jul 11, 2009
3:43 am

Gday John ... By that i mean no unparking, no calibrating or drive training etc etc Just start the scope, enter date/time etc and start a one star or two star...
johansea
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Jul 11, 2009
3:53 am

Hi Andrew - I got a chance to do some testing outside before the clouds came: - Polar align appears to work (the scope moves normally) but at the end the...
John Anderson
john59and
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Jul 12, 2009
6:19 am

Gday John ... But what about aligning itself??? I cannot find a way to start the scope and polar align without the OTA crashing into the stops You are starting...
johansea
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Jul 12, 2009
9:29 am

Hi Andrew - For polar, I boot the controller and immediately set the mount in autostar to polar and do an "easy" align...then put the scope in polar home. (I...
John Anderson
john59and
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Jul 12, 2009
5:23 pm

Gday John ... Hmmm, maybe thats it. The mount style is maintained in EEprom over booting, so you shouldn't need to reset to Polar each time ... I'll try that...
johansea
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Jul 12, 2009
10:41 pm

Well...that certainly makes a difference. Dr. Clay _____ Arkansas Sky Observatories MPC H45 - Petit Jean Mountain South MPC H41 - Petit Jean Mountain MPC H43 -...
P. Clay Sherrod
drclay2002
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Jul 10, 2009
10:47 pm
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