Date   

Re: 16" LX200R on an AP1200

ocular21 <rbissinger@...>
 

I have the 16" LX200R mounted on my AP1200GTO, along with an Optec
filter wheel, an Optec focuser, a SBIG AO-L, and a SBIG ST-10XME. I
use a set of Parallax rings, on the top of which I have a Losmandy
dovetail holding a 90mm guidescope. I also use an 24" AstroPhysics
ribbed plate where I drilled a 2nd set of holes to mount one of the
Parallax rings. Because the 16" LX200R is so tail heavy the Parallax
rings are offset to one end of the ribbed plate, allowing me to
position the tail of the OTA closer to the Dec axis. I still need to
use some pancake weights towards the front of the OTA for proper Dec
balance.

I also found adding the 28" AstroPhysics counterweight shaft
necessary for the additional payload. But the system tracks
extremely well; I can't tell any degradation in performance from when
I had a C14 mounted on it. So, the AP1200 mount will easily carry
the 16" LX200R OTA and accessories.


--- In ap-gto@yahoogroups.com, "Gav" <gavbray@...> wrote:

I'm considering mounting a 16" LX200R on my new AP1200. I believe
the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as to
whether this would be a suitable match or whether I'd be better
with
a
14" SCT (70 lbs). The scope would be used for visual work only and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin


Re: 16" LX200R on an AP1200

Gavin Bray
 

Thanks Barbara for the reassurance. From what you and Jeff have said
I'm pretty sure I'm going to go with the 16". I just have to hope I
get a good one. :-)

Regards
Gavin

--- In ap-gto@yahoogroups.com, "Barbara Harris" <barbharris1@...>
wrote:

Gavin,
I have a LX200GPS OTA on an AP1200 with a Televue Pronto as a
guidescope permanently mounted in an observatory and it handles
the
weight just fine. I am not sure of the wt. difference between the
LX200 and the LX200R but I would not rely on Meade for that info.
They
really could not give me an accurate wt. of the OTA only (I think
they
quoted 120 lbs.). They are use to the whole setup and usually
will
quote you the OTA and fork arms wt. When I weighed my assembly I
think it was around 80 lbs. for the OTA only. Anyway, the mount
has
no
trouble handling the weight. I have the scope mounted with a
Losmandy
dovetail.

Barbara

--- In ap-gto@yahoogroups.com, "Gav" <gavbray@> wrote:

I'm considering mounting a 16" LX200R on my new AP1200. I
believe
the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as
to
whether this would be a suitable match or whether I'd be better
with
a
14" SCT (70 lbs). The scope would be used for visual work only
and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin


Re: 16" LX200R on an AP1200

Barbara Harris <barbharris1@...>
 

Gavin,
I have a LX200GPS OTA on an AP1200 with a Televue Pronto as a
guidescope permanently mounted in an observatory and it handles the
weight just fine. I am not sure of the wt. difference between the
LX200 and the LX200R but I would not rely on Meade for that info.
They
really could not give me an accurate wt. of the OTA only (I think
they
quoted 120 lbs.). They are use to the whole setup and usually will
quote you the OTA and fork arms wt. When I weighed my assembly I
think it was around 80 lbs. for the OTA only. Anyway, the mount has
no
trouble handling the weight. I have the scope mounted with a
Losmandy
dovetail.

Barbara

--- In ap-gto@yahoogroups.com, "Gav" <gavbray@...> wrote:

I'm considering mounting a 16" LX200R on my new AP1200. I believe
the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as to
whether this would be a suitable match or whether I'd be better
with
a
14" SCT (70 lbs). The scope would be used for visual work only and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin


Re: 16" LX200R on an AP1200

Joe Zeglinski
 

Thanks Jeff,

Excellent. That speaks volumes for Roland's design of the AP1200, and I
will assume of the AP900 as well, which I am fortunate to be soon receiving.
Your comments make the decision I made, MUCH easier on my frown lines.

Joe

----- Original Message -----
From: "Jeff Young" <jey@adobe.com>
To: <ap-gto@yahoogroups.com>
Sent: Friday, March 30, 2007 7:25 PM
Subject: RE: [ap-gto] Re: 16" LX200R on an AP1200


Joe --

I certainly had too much flexure when I was using a Losmandy dovetail to
mount it. (The biggest problem was differential sag between the front
and rear which caused collimation changes.)

I've since switched to Parallax rings on the 15" ribbed plate -- a
combination which is much more rigid. There is still some flexure left,
but I like that: with a star diagonal rotated to different angles I
never can keep directions straight so I get my bearings by nudging the
OTA and seeing which way the view moves -- and I also sometimes jiggle
the OTA to bring out really low contrast objects or details. But all
the flexure is still in the plate/rings -- I have essentially zero
backlash on both axes and the axes themselves don't exhibit any
measurable flex.

-- Jeff.


Re: 16" LX200R on an AP1200

Jeff Young <jey@...>
 

Joe --

I certainly had too much flexure when I was using a Losmandy dovetail to
mount it. (The biggest problem was differential sag between the front
and rear which caused collimation changes.)

I've since switched to Parallax rings on the 15" ribbed plate -- a
combination which is much more rigid. There is still some flexure left,
but I like that: with a star diagonal rotated to different angles I
never can keep directions straight so I get my bearings by nudging the
OTA and seeing which way the view moves -- and I also sometimes jiggle
the OTA to bring out really low contrast objects or details. But all
the flexure is still in the plate/rings -- I have essentially zero
backlash on both axes and the axes themselves don't exhibit any
measurable flex.

-- Jeff.





________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of Joseph Zeglinski
Sent: Friday, March 30, 2007 10:14 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re: 16" LX200R on an AP1200



Glad you are in contact, Jeff.

Just a thought - have you tested shaft and dovetail flexure,
which might
increase if you go to an even larger OTA, even if the cradle
bolts don't shear
off, first?

I wonder if taking a circumpolar exposure, by rotating the mount
quickly,
might show elliptical paths, if there is any sign of flexure on
the OTA
attachment.
Perhaps, as a guess, reflecting a laser pointer off the counter
weight shaft,
onto the ceiling or dome, might show the beam angle deflected by
tiny bends of
the shaft.

Joe

----- Original Message -----
From: "Jeff Young" <jey@adobe.com <mailto:jey%40adobe.com> >
To: <ap-gto@yahoogroups.com <mailto:ap-gto%40yahoogroups.com> >
Sent: Friday, March 30, 2007 4:48 PM
Subject: RE: [ap-gto] Re: 16" LX200R on an AP1200

[snip]
> I'm using Parallax rings and the AP 15" ribbed plate, which
likely add
> another 15 lbs. The dovetail, rings and refractor on top are
likely
> good for another 20 lbs. Figure 120 lbs all told. I'm
comfortable
> enough with those weights on it that I'm considering going to
a
> considerably heavier OTA....
>
> -- Jeff.
>
>
>
>


Re: 16" LX200R on an AP1200

Joe Zeglinski
 

Glad you are in contact, Jeff.

Just a thought - have you tested shaft and dovetail flexure, which might
increase if you go to an even larger OTA, even if the cradle bolts don't shear
off, first?

I wonder if taking a circumpolar exposure, by rotating the mount quickly,
might show elliptical paths, if there is any sign of flexure on the OTA
attachment.
Perhaps, as a guess, reflecting a laser pointer off the counter weight shaft,
onto the ceiling or dome, might show the beam angle deflected by tiny bends of
the shaft.

Joe

----- Original Message -----
From: "Jeff Young" <jey@adobe.com>
To: <ap-gto@yahoogroups.com>
Sent: Friday, March 30, 2007 4:48 PM
Subject: RE: [ap-gto] Re: 16" LX200R on an AP1200


[snip]
I'm using Parallax rings and the AP 15" ribbed plate, which likely add
another 15 lbs. The dovetail, rings and refractor on top are likely
good for another 20 lbs. Figure 120 lbs all told. I'm comfortable
enough with those weights on it that I'm considering going to a
considerably heavier OTA....

-- Jeff.




Re: 16" LX200R on an AP1200

Jeff Young <jey@...>
 

"jeybball" and Jeff Young are the same guy.

It's a long story, but I worked for a Unix company back before the whole
world had email, and so everyone used their initials for their email.
Mine are "jey". I first used Yahoo to manage a fantasy basketball with
a friend -- thus "jeybball". Later, it seemed like too much trouble to
create another account....

In any case, Gavin already found me on CloudyNights (where I go by the
somewhat simpler "Jeff Young").

But to answer the question directly, I'd be very much surprised if the
16" LX200R OTA were really 110 lbs. Meade quotes the GPS version at 120
lbs, but that includes the Dec axis trunions and drive system, which you
won't have. In any case, my 16" GPS OTA weighs on the order of 85 lbs
-- I'd expect the R version to be within 10% of that.

I'm using Parallax rings and the AP 15" ribbed plate, which likely add
another 15 lbs. The dovetail, rings and refractor on top are likely
good for another 20 lbs. Figure 120 lbs all told. I'm comfortable
enough with those weights on it that I'm considering going to a
considerably heavier OTA....

-- Jeff.





________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of Joseph Zeglinski
Sent: Friday, March 30, 2007 4:10 PM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Re: 16" LX200R on an AP1200



Gavin,

Actually, there is a 16" LX200GPS/FC-100 on an AP1200 mount on a
permanent
pier, in the PHOTOS section of this group (see the LAST image in
the
Miscellaneous folder):

http://tech.ph.groups.yahoo.com/group/ap-gto/photos/view/ede6?b=18
<http://tech.ph.groups.yahoo.com/group/ap-gto/photos/view/ede6?b=18>

You should contact the contributor "JEYBBALL" - I think it is
identical to
your system.

Joe

----- Original Message -----
From: "ebuehrens" <ebuehrens@rcn.com
<mailto:ebuehrens%40rcn.com> >
To: <ap-gto@yahoogroups.com <mailto:ap-gto%40yahoogroups.com> >
Sent: Friday, March 30, 2007 7:34 AM
Subject: [ap-gto] Re: 16" LX200R on an AP1200

> Gavin,
>
> There's a guy named Jeff Young that hangs out on the Astromart
> Equipment forum that has exactly this setup. Not sure he's too
happy
> with the OTA but the mount seems to take the load just fine.
You might
> want to email him.
>
> Eric
>
> --- In ap-gto@yahoogroups.com
<mailto:ap-gto%40yahoogroups.com> , "Gav" <gavbray@...> wrote:
>>
>> I'm considering mounting a 16" LX200R on my new AP1200. I
believe the
>> OTA weight is 110 lbs.
>>
>> By the time accessories etc are added this would be close to
the
>> advertised capacity limit of 140 lbs.
>>
>> This concerns me and I wonder if anyone can offer any advice
as to
>> whether this would be a suitable match or whether I'd be
better with a
>> 14" SCT (70 lbs). The scope would be used for visual work
only and
>> housed in an observatory.
>>
>> Is the extra 2" going to cause more problems than it's worth?
>>
>> Thanks
>> Gavin
>>
>
>
>
>
> To UNSUBSCRIBE, or for general information on the ap-gto list
> see http://groups.yahoo.com/group/ap-gto
<http://groups.yahoo.com/group/ap-gto>
> Yahoo! Groups Links
>
>
>
>


Re: 16" LX200R on an AP1200

Roland Christen
 

In a message dated 3/30/2007 4:14:08 PM Central Daylight Time,
J.Zeglinski@rogers.com writes:


Perhaps, as a guess, reflecting a laser pointer off the counter weight
shaft,
onto the ceiling or dome, might show the beam angle deflected by tiny bends
of
the shaft.
The counterweight shaft does not rotate on the 900/1200 or Mach1.

Roland Christen


**************************************
See what's free at
http://www.aol.com.


Re: 16" LX200R on an AP1200

Joe Zeglinski
 

Gavin,

Actually, there is a 16" LX200GPS/FC-100 on an AP1200 mount on a permanent
pier, in the PHOTOS section of this group (see the LAST image in the
Miscellaneous folder):
http://tech.ph.groups.yahoo.com/group/ap-gto/photos/view/ede6?b=18

You should contact the contributor "JEYBBALL" - I think it is identical to
your system.

Joe

----- Original Message -----
From: "ebuehrens" <ebuehrens@rcn.com>
To: <ap-gto@yahoogroups.com>
Sent: Friday, March 30, 2007 7:34 AM
Subject: [ap-gto] Re: 16" LX200R on an AP1200


Gavin,

There's a guy named Jeff Young that hangs out on the Astromart
Equipment forum that has exactly this setup. Not sure he's too happy
with the OTA but the mount seems to take the load just fine. You might
want to email him.

Eric

--- In ap-gto@yahoogroups.com, "Gav" <gavbray@...> wrote:

I'm considering mounting a 16" LX200R on my new AP1200. I believe the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as to
whether this would be a suitable match or whether I'd be better with a
14" SCT (70 lbs). The scope would be used for visual work only and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin



To UNSUBSCRIBE, or for general information on the ap-gto list
see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links




Re: 16" LX200R on an AP1200

ebuehrens
 

Gavin,

There's a guy named Jeff Young that hangs out on the Astromart
Equipment forum that has exactly this setup. Not sure he's too happy
with the OTA but the mount seems to take the load just fine. You might
want to email him.

Eric

--- In ap-gto@yahoogroups.com, "Gav" <gavbray@...> wrote:

I'm considering mounting a 16" LX200R on my new AP1200. I believe the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as to
whether this would be a suitable match or whether I'd be better with a
14" SCT (70 lbs). The scope would be used for visual work only and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin


Re: Connecting the mount to the computer

roy <roystarman@...>
 

Yes the I/O gear ones work very well. I'm sure Roland and company will be
switching to USB soon.



_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
gary schones
Sent: Friday, March 30, 2007 12:33 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Connecting the mount to the computer



With serial cables getting harder to find can a serial 232 to usb
adpter be used to connect to the sky.
Gary


Re: Connecting the mount to the computer

N. Foldager
 

Gary Schones:

With serial cables getting harder to find can a serial 232 to usb
adpter be used to connect to the sky.
Gary
Yes. That's what I do.

Best regards,

Niels Foldager
Denmark


Re: Mach1GTO Waiting Time

Robert Schlingensiepen <schling@...>
 

Dear Marj,

Thank you for the precise update!

Robert

-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf
Of Marj
Sent: Thursday, March 29, 2007 4:35 PM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] Mach1GTO Waiting Time

Dear Robert,
We are currently notifying people who signed up in early July 2003. It
is difficult to determine how long it will be before we catch up to
April 2006. Although there are a large number of people on the list, not
everyone will order when their name comes up. We are finishing up the
parts for the current production run now and will begin the next
production run shortly with delivery expected later this year. To be
honest, I don't think that we will get to your name this year, but maybe
next year........
Thanks for your interest.


Marj Christen
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics.com
Please include this e-mail with your response.

-----Original Message-----
From: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
[mailto:ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com]On
Behalf Of Robert Schlingensiepen
Sent: Tuesday, March 27, 2007 4:41 PM
To: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
Subject: [ap-gto] Mach1GTO Waiting Time

Hi all,

I'm on the Mach1GTO notification list since April 2006. Is there a
kind soul out there that has been notified for the current run and
could tell me when he/she was put on the list?

Thanks

Robert


Connecting the mount to the computer

gary schones <gary378@...>
 

With serial cables getting harder to find can a serial 232 to usb
adpter be used to connect to the sky.
Gary


16" LX200R on an AP1200

Gavin Bray
 

I'm considering mounting a 16" LX200R on my new AP1200. I believe the
OTA weight is 110 lbs.

By the time accessories etc are added this would be close to the
advertised capacity limit of 140 lbs.

This concerns me and I wonder if anyone can offer any advice as to
whether this would be a suitable match or whether I'd be better with a
14" SCT (70 lbs). The scope would be used for visual work only and
housed in an observatory.

Is the extra 2" going to cause more problems than it's worth?

Thanks
Gavin


Re: New member - advice on switching from G11 to AP900

roy <roystarman@...>
 

There is also no real problem with moving RA and Dec. Once you have
remounted the 900 use a bubble level to establish Park position 1 ( Mount
pointing north scope on west side an C/W shaft and telescope level. You can
then use the resume from park 1 position to initialize. .



_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
Rick K
Sent: Thursday, March 29, 2007 3:41 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re:New member - advice on switching from G11 to AP900



In my scenario, if you don't move the RA or Dec from where they were
'parked', even if you take the mount off the pier and disassemble the
axis, when you put it back together, you won't even have to do a sync.
Basically it is as if the mount never moved off of the pier. I usually
park the mount in a known position and take everything apart leaving
the adapter plate on a permanent pier. When I put everything back
together, one day or one month later, I can resume from park and do a
goto on an object and it will be close to dead center in an eyepiece
or on a CCD chip. If nothing was moved on the mount then it will be as
if it never left the pier.
If I am using a portable pier as I do with the Mach1, I can get
almost the same level of accuracy if I am careful in polar aligning.
Unfortunately the portable pier gets set up in different spots in my
back yard to view different portions of the sky or avoid some direct
lighting, so I normally have to adjust the azimuth. If I am careful to
level the pier properly, I don't have to adjust the mount's altitude
setting.
In your scenario, if the pier is permanent and the RA and or Dec axis
are manually moved after parking and prior to re-powering, yes, the
mount will have to be re-synchronized but polar alignment should not
have to be changed unless the pier has changed somehow.
I am not sure of the accuracy of the clock in the keypad. I know that
it is quite good, but like all clocks, none are perfect and all must
be adjusted at some point.

Rick.

--- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com, "Joseph
Zeglinski" <J.Zeglinski@...> wrote:

Hi Rick,

Much appreciated.

It's actually O.K. to completely lose RA &DEC position - even
remove the
DEC axle, I think.
What I worried about was losing "site alignment" - the Az/El of the
mount,
which would take more time realigning each time.

My idea is that I can reassemble the mount - follow your
suggestion about
dropping the fork against the adjuster original position - and
perform a SYNC,
or is it Recalibrate - and I am quickly back up and running. This
should work,
shouldn't it?

About the "internal time" though; Doesn't the pad processor keep
accurate
time using the coin battery? I suppose that in two or three years,
the CR
Lithium battery will run down, and the time will stop, but surely
not before
then?

Thanks,
Joe

----- Original Message -----
From: "Rick K" <JunkMailGoesHere@...>
To: <ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com>
Sent: Thursday, March 29, 2007 10:57 AM
Subject: [ap-gto] Re:New member - advice on switching from G11 to AP900


--- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com, "Joel
Guthals" <jeguthals@> wrote:

As far as switching the mounts from one location to another, there
is no real difference. For the AP900GTO you would buy two pier
adapters, one for each of your piers. Then you could lift the the
mount from one to the other by removing and reinstalling the four hand
screws that attach the AP900 to the pier adapter. You may have to do
some fine tuning of the azimuth adjusters, same as with the G-11.


Actually, you can make it even simpler on yourself. Turn off the power
to the mount. You can park it at one of the three preset postions
prior to power down or not, it doesn't matter. Just undo _one_ side of
the azimuth adjusters when you take the four hold-down bolts out to
remove the mount. The other one can have the knob taped to the block
to maintain its setting. When putting the mount back on the plate,
install the four hold-down bolts but don't fully tighten them. Then
tighten up that one azimuth adjuster side then tighten the four
hold-down bolts. If the pier didn't move and the mount itself hasn't
been physically moved in RA or Dec then it will be pretty much exactly
right where it left off. Power it back up, resume from park and
continue to use it. The only thing that _might_ be slightly off is the
keypad internal time if the mount has been stored for quite some time
between use.





To UNSUBSCRIBE, or for general information on the ap-gto list
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yahoo.com/group/ap-gto
Yahoo! Groups Links




Re: Follow Up on Attaching TOA 150 to AP900

N. Foldager
 

Ray York:

I would recommend going with the Tak plate:
http://www.buytelescopes.com/product.asp?t=&pid=11366&m=

and the Tak rings:
http://www.buytelescopes.com/product.asp?t=&pid=9817&m=
Is this a "permanent" fixation or some kind of dovetail?

Where to find pictures of this set-up?

Best regards,

Niels Foldager


Re: New member - advice on switching from G11 to AP900

observe_m13
 

In my scenario, if you don't move the RA or Dec from where they were
'parked', even if you take the mount off the pier and disassemble the
axis, when you put it back together, you won't even have to do a sync.
Basically it is as if the mount never moved off of the pier. I usually
park the mount in a known position and take everything apart leaving
the adapter plate on a permanent pier. When I put everything back
together, one day or one month later, I can resume from park and do a
goto on an object and it will be close to dead center in an eyepiece
or on a CCD chip. If nothing was moved on the mount then it will be as
if it never left the pier.
If I am using a portable pier as I do with the Mach1, I can get
almost the same level of accuracy if I am careful in polar aligning.
Unfortunately the portable pier gets set up in different spots in my
back yard to view different portions of the sky or avoid some direct
lighting, so I normally have to adjust the azimuth. If I am careful to
level the pier properly, I don't have to adjust the mount's altitude
setting.
In your scenario, if the pier is permanent and the RA and or Dec axis
are manually moved after parking and prior to re-powering, yes, the
mount will have to be re-synchronized but polar alignment should not
have to be changed unless the pier has changed somehow.
I am not sure of the accuracy of the clock in the keypad. I know that
it is quite good, but like all clocks, none are perfect and all must
be adjusted at some point.

Rick.


--- In ap-gto@yahoogroups.com, "Joseph Zeglinski" <J.Zeglinski@...> wrote:

Hi Rick,

Much appreciated.

It's actually O.K. to completely lose RA &DEC position - even
remove the
DEC axle, I think.
What I worried about was losing "site alignment" - the Az/El of the
mount,
which would take more time realigning each time.

My idea is that I can reassemble the mount - follow your
suggestion about
dropping the fork against the adjuster original position - and
perform a SYNC,
or is it Recalibrate - and I am quickly back up and running. This
should work,
shouldn't it?

About the "internal time" though; Doesn't the pad processor keep
accurate
time using the coin battery? I suppose that in two or three years,
the CR
Lithium battery will run down, and the time will stop, but surely
not before
then?

Thanks,
Joe

----- Original Message -----
From: "Rick K" <JunkMailGoesHere@...>
To: <ap-gto@yahoogroups.com>
Sent: Thursday, March 29, 2007 10:57 AM
Subject: [ap-gto] Re:New member - advice on switching from G11 to AP900


--- In ap-gto@yahoogroups.com, "Joel Guthals" <jeguthals@> wrote:

As far as switching the mounts from one location to another, there
is no real difference. For the AP900GTO you would buy two pier
adapters, one for each of your piers. Then you could lift the the
mount from one to the other by removing and reinstalling the four hand
screws that attach the AP900 to the pier adapter. You may have to do
some fine tuning of the azimuth adjusters, same as with the G-11.


Actually, you can make it even simpler on yourself. Turn off the power
to the mount. You can park it at one of the three preset postions
prior to power down or not, it doesn't matter. Just undo _one_ side of
the azimuth adjusters when you take the four hold-down bolts out to
remove the mount. The other one can have the knob taped to the block
to maintain its setting. When putting the mount back on the plate,
install the four hold-down bolts but don't fully tighten them. Then
tighten up that one azimuth adjuster side then tighten the four
hold-down bolts. If the pier didn't move and the mount itself hasn't
been physically moved in RA or Dec then it will be pretty much exactly
right where it left off. Power it back up, resume from park and
continue to use it. The only thing that _might_ be slightly off is the
keypad internal time if the mount has been stored for quite some time
between use.





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Re: New member - advice on switching from G11 to AP900

Joe Zeglinski
 

Thanks for clearing up the confusion.

I think that Gilles approach, of manufacturing a special AP900 "base to
Losmandy adapter", is a good approach. That way, I can continue to use the
Losmandy standard pier, or on the Losmandy Meade Adapter (MA) option, attached
to an outdoor pillar, or even on a different portable tripod (with another
MA), at a remote site.

It's nice to simple drop and twist an AP900, without having to remove three
large knobs.
The AP900 SPA will be about 2 1/2 inches wider at the base (about 5.5" G11,
vs. 7.75" AP), than the Losmandy G11 base, but that shouldn't make a problem
in stability - or I could just machine a thicker short aluminum cylinder.
Wonder what dimensions Gilles used for his conversion.

Cheers,
Joe

----- Original Message -----
From: <chris1011@aol.com>
To: <ap-gto@yahoogroups.com>
Sent: Thursday, March 29, 2007 2:19 PM
Subject: Re: [ap-gto] Re:New member - advice on switching from G11 to AP900


In a message dated 3/29/2007 1:05:17 PM Central Daylight Time,
J.Zeglinski@rogers.com writes:


You actually have to "REMOVE", entirely, from the top sides of the pier
(pipe), these 6 screws (O.K. fewer, after you lose a few in the grass or
snow, at night).
Yes, you are correct. The three knobs are for the Mach1 mounting. I was
confused by the multiple posts and thought we were talking about the Mach1
vs. G11
mountings.

The 900/1200 uses 6 screws which need to be removed. However, it is just as
easy to remove the 4 knobs from the base of the mount and carry it out to a
permanent pier and re-attach without losing any polar alignments, as others
have
pointed out.

Rolando


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Re: New member - advice on switching from G11 to AP900

Joe Zeglinski
 

Thanks Roland,

First, may I join so very many of your customers, to thank you,
personally, for designing your mounts for us. They are a masterpiece of both
art, and engineering!

I thought there are just two ways to transport the AP900 mount:

(1) Completely "remove" SIX (6) button head SCREWS (not knobs) &
washers (5/16-18 x 5/8) which are used to attach the SPA to a standard AP/ATS
pier.

OR ...

(2) Completely REMOVE the FOUR (4) Black knobs that attach the fork section to
the pier adapter top (SPA or RPA). Perhaps, the normal practice, is not use
all 4 knobs? (Anyway, loosening is not enough.)

I do not see, in any of your literature on your web site, a THREE (3) KNOB
set, at the side of the pier, that only need to be "LOOSENED".

The only THREE item, I see, is the (3) turn buckle rods that stiffen the pier
pipe, and that is not relevant, here. I'm sure you didn't mean these.

Thanks,
Joe

----- Original Message -----
From: <chris1011@aol.com>
To: <ap-gto@yahoogroups.com>
Sent: Thursday, March 29, 2007 11:39 AM
Subject: Re: [ap-gto] New member - advice on switching from G11 to AP900


In a message dated 3/29/2007 12:55:07 AM Central Daylight Time,
J.Zeglinski@rogers.com writes:


If I remove the RA assembly by detaching
the fork bolts (from the pier adapter), I no longer preserve the
polar
azimuth adjustment.
You cannot remove the RA assembly by detaching the fork bolts. That is
simply
not a realistic option. Just simply lift the entire RA assembly out of the
pier, just as you would lift a G11 mount out of its pier.

Roland Christen


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