Date   

Re: questions from a possible 900GTO owner

Joe Zeglinski
 

Thanks Rolando,

Good to hear, that it is so easy.
But, I will probably stay with the idea, since I don't need to buy and store,
yet another tripod.

Joe

----- Original Message -----
From: <chris1011@aol.com>
To: <ap-gto@yahoogroups.com>
Sent: Monday, April 02, 2007 1:32 PM
Subject: Re: [ap-gto] Re: questions from a possible 900GTO owner


In a message dated 4/2/2007 12:07:20 PM Central Daylight Time,
J.Zeglinski@rogers.com writes:


(1) poking around with a flashlight to get the 4 screws into the fork base
&

adapter, during setup
I can do it blindfolded, and so can anyone else. It is not the difficulty
that you make it out to be. By the way, they are hand knobs, not screws.

Rolando


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http://www.aol.com.






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Re: questions from a possible 900GTO owner

Joe Zeglinski
 

Hi Mal,

It could be I might be over complicating my desires of "portability"
issues.

First, a correction, Gil and I are hoping to continue using our "Losmandy
tripod"; I introduced the Meade reference, because I intend to use the
Losmandy "MA" option - a Meade tripod adapter. This is normally used to
convert the Meade tripod , or for a permanent post in the ground. That is
convenient, saves making a special mount holder by hiring a machinist.

What I am also trying to avoid on the AP900 field use, is messing with:

(1) poking around with a flashlight to get the 4 screws into the fork base &
adapter, during setup
(2) removing the AP900 RA assembly, by unbolting 4 screws, completely during
take down
(3) risk losing one or more of these screws in the snow or grass
(4) saving time
(5) make it easier to work with cold hands and fingers

With the "reducing adapter" approach, the installation & removal of the
AP900 emulates the Losmandy G11 system:

(1) loosen, but not remove, 3 large bright aluminum, Losmandy optional knobs
(2) twist the RA assembly/"G11 reducing adapter", in the 3 notched holes, and
lift out

Done:
The G11 tripod adapter along with its 3 knobs, all still attached to the
original AP900 RA assembly (including AP900, with fork still bolted down to
its Rotating or Standard adapter, and azimuth/elevation settings untouched ),
is packed away for travel.

Reinstallation on the Losmandy G11 tripod, (or a permanent post with the
MA "G11 to Meade Tripod Adapter"), is a simple drop back down, twist to lock,
and snug up the 3 knobs.
Quick and easy - plus, for short trips between the dedicated back yard
observing spot (post, or pads), and the house, no change of site alignment is
required - quicker initialization.

In your Meade tripod setup, how do you pack up the AP900?
Since the AP pier adapter plate is permanently bolted to the Meade tripod, you
no longer have the option to put your Meade Wedge back on it, if desired, so
it is now a permanent AP900 tripod.
For travel, do you have to remove the 6 tiny button screws around the AP900
Flat Surface Adapter (FSA) plate, and then lift off the AP900 RA assembly? Not
much fun in the dark, and they WILL likely get lost.
Or, do you leave the AP900 "Rotating or Standard Adapter" plate screwed
down to the FSA, but remove the 4 bolts from the AP900 fork base, and pack
that away? Again, the hassle with the complete removal or insertion of those 4
bolts.

Please correct me if I am misunderstanding something about the AP900
installation procedures.
I would do anything to simplify and speed up repeatable field setup
procedures, especially when it's very cold.

Thanks,
Joe

----- Original Message -----
From: "Mal Speer" <mal@malcoprecision.com>
To: <ap-gto@yahoogroups.com>
Sent: Monday, April 02, 2007 8:30 AM
Subject: [ap-gto] Re: questions from a possible 900GTO owner


For the fellow with the Meade tripod: If you buy the AP mounting
plate all you have to do is drill and tap 4 -20 holes in the Meade
tripod top to match the 4 flat mounting holes in AP 900 mounting
plate. I used an AP 900 with a C14 on a Meade Giant field tripod and
it worked great.
Mal


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

Hi Gil,

I did a few quick measurements of my Losmandy G11 mount
bottom, and saw
the dimension Drawing of the AP900 Pier Adapter Plate, and see it
is easy to
make a "reducing" adapter so that the top of this 2" or 3" tall
ring has the
shape and 6 small screw holes - as though this were the top of any
AP tripod -
to accept the AP900, then is cut inward, to the shape and
dimensions of the
Losmandy head base at the bottom.

Here is a direct link to the AP "Pier Adapter" dimensions
document, at
their Tech Support page, under the AP900 list of PDF documents
(consider this
the same as the bottom of your AP900, which drops into an AP tripod
pipe):

900 Mount Base (Pier Adapter) Dimensions (05-17-00)

The bottom of this plate is the same as the bottom of the AP900
Standard
or Rotating Pier Adapter, which you would be already using on that
mount. Have
your machinist make the top 1/2 inch or so it accepts this base.
The bottom
of the reducing adapter is just a narrower cylinder with 3 holes to
screw in
the Losmandy G11 screws/knobs.
It's like a "gender changer" - female AP900 at the top (like the
pipe), and
G11 male at the bottom.

After that, you can treat the AP900 mount as though it were a
G11 mount -
for your Losmandy tripod - or with MA option, if you like using the
Meade
tripod legs (or any other heavy photographic tripod) with a
Losmandy MA bolted
on top of it.
This "reducing adapter" opens up both Losmandy and Meade tripods
compatibility for the AP900.

I assume you have purchased the optional Losmandy knobs - they
are so
convenient. You might buy an extra set for your G11 adapter. They
make it
soooo easy to just drop the heavy mount straight into it's pier,
knobs and
all.
My plan is to make this "coupler as short as possible", so it
stays
attached to the AP900 mount (pier adapter) permanently, just like
the AP900
actually had a Losmandy G11 mount base. That way, I can simply drop
the AP900
directly into my G11 tripod, or into my Losmandy Meade Pier Adapter
(MA) -
same thing.

The down side, is that the AP900 mount still needs to fit into
your
travelling case - you may have to remove a bit of foam since the
Losmandy
adapter remains screwed to the bottom of the AP mount with those 6
permanent
screws. Since I haven't received my AP900 yet, I can still search
for a
suitable case for it to fit this modified bottom shape.

NOTE:
If you buy a SCOPEGUARD case for the AP900, they use their own
standard AP900
shaped pre-cut foam insert, which won't be cut for that 2 or 3 inch
adapter -
and the case might even then be slightly too small (don't know). I
plan on
using a suitable Pelican case, and remove the foam cubes myself to
fit the end
result.

Since at this point you are just a "possible 900GTO owner" as
you say,
then we are in the same boat. I won't start machining until it
arrives so the
result can be test fitted to both parts.

Meanwhile, show your friend your current G11 tripod, and give
him the
AP900 pier adapter plate dimension diagram, in preparation. It's so
simple, AP
should have done this a long time ago, since a lot of AP mount
owners are
current or former G11 owners as well. Makes VERY good marketing
sense. Heck,
it may even help Scott sell more of HIS tripods, for those like me
who don't
like the AP tripods. Then again ... maybe AP doesn't want to
encourage
customers buying Losmandy's tripods, and Losmandy doesn't want
people buying
AP's mounts instead of his own G11 etc :-)

I'll work on my own sketch for this soon, but I think there is
enough data
for your friend's advice already.

Good luck,
Joe



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Re: maintenance of ap 900 gto cp3

Jeff Young <jey@...>
 

Roland --

Once a year lubricate the gears inside and outside with a thin white
lithium grease.

Worm and worm gear as well, or just the reduction/transfer gears?

Thanks,
-- Jeff.


Re: G11 to 900GTO adapter and question about AP portable piers

Joe Zeglinski
 

Hi Chris,

Good point, but I don't quite see your analysis. If the mount is
completely balanced, the entire weight of the telescope system should pass
straight down through the centre of the mount, and thus, the centre of the
tripod. The weight at the tripod feet should then result in an even
distribution, among all three. Under complete counterbalance, there should be
no resultant moment forces remaining at the centre of the pier - except for a
"marginal, intended overbalance" to the east side of the mount, for smoother
tracking purposes.

You state a concern, that I can't quite grasp. Could you explain just a
bit further, please - I may have missed something obvious?

Joe

----- Original Message -----
From: <chris1011@aol.com>
To: <ap-gto@yahoogroups.com>
Sent: Monday, April 02, 2007 11:17 AM
Subject: Re: [ap-gto] G11 to 900GTO adapter and question about AP portable
piers


In a message dated 4/2/2007 9:58:01 AM Central Daylight Time,
J.Zeglinski@rogers.com writes:


I recently purchased a set of the optional Losmandy glow in the dark
rubber feet for the G11 tripod.
I am not a fan of flexible vibration dampers under tripod feet. Rubber
underneath a mount tripod will cause variable polar alignment as the scope
moves
around the sky. Although it might kill vibration, it does flex with the
changing
moment arm of the various mount and scope componenets. Not a good idea for
imaging.

Rolando


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Re: Keypad problem ?

 

Dear Dominik,

I have e-mailed you privately re: your keypad problem, but I have not heard from you yet. Please check your e-mail. Thank you.


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.com [mailto:ap-gto@yahoogroups.com]On Behalf Of Dominik Wos
Sent: Thursday, March 29, 2007 12:20 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re: Keypad problem ?



Thanks for your response. The only problem is my location - Poland,
Europe so it is not so easy for me to send the keypad to the US. It
works and only the first row of left side keys do not work (I press
it but there is no reaction) and as I use the mount in my observatory
I can live without this first row. I have looked into the keypad to
see how it works and it is rather simply built but I have no idea
what inside the keypad is not working properly.

Anyway thanks for your advice,
Dominik

--- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com, "Marj" <marj@...> wrote:

Dear Dominick,

I have never heard of this problem before. Please try it again and
if the situation remains, give us a call to obtain a return
authorization #.


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 Dominik Wos
Sent: Thursday, March 29, 2007 4:54 AM
To: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
Subject: [ap-gto] Keypad problem ?



Hi to the Group !

I have a problem with my 1200GTO keypad. After unusing the mount
for
one week I switched it on and from this time the three left keys do
not
work (1, 6 and Goto). All other keys are ok and the mount is fully
operational with using RS232 conection but without having access
to "1"
key I can not use goto without my laptop. Strange ? Has anyone had
the
same problem ?

Best regards,
Dominik









Re: G11 to 900GTO adapter and question about AP portable piers

Joe Zeglinski
 

Hi Jeff,

I recently purchased a set of the optional Losmandy glow in the dark
rubber feet for the G11 tripod. That should help them keep from sinking into
the ground, and kill vibration on pavement.

However, about levelling, I wish the AP900 and other models would have
levelling bubbles on the base of the fork, like the Losmandy G11 and some
others do.
Something I will have to add, to make it right.

Joe

----- Original Message -----
From: "Jeff" <jlc@sbcglobal.net>
To: <ap-gto@yahoogroups.com>
Sent: Monday, April 02, 2007 1:49 AM
Subject: RE: [ap-gto] G11 to 900GTO adapter and question about AP portable
piers



"Bare ground" and the AP Pier? No problem, imo. Maybe even better than
the G11... the feet are closed (about an inch wide metal "foot")... the G11
feet are open and can sink in soft ground.

The G11 does have the advantage of being able to setup on faily non-level
ground. E.g. just adjust the legs to get it level.
(still, I found it a bit of hassle to level with the cut-your-hands tripod
leg knobs (I didnt upgrade).)


Re: maintenance of ap 900 gto cp3

Roland Christen
 

In a message dated 4/2/2007 1:08:03 PM Central Daylight Time,
lupo.di.mare@virgilio.it writes:


i put the new lythium grease but i put a little bit more
...will cause problem that?
No problem.

Rolando


**************************************
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http://www.aol.com.


Re: maintenance of ap 900 gto cp3

Roland Christen
 

In a message dated 4/2/2007 12:49:55 PM Central Daylight Time, jey@adobe.com
writes:


Once a year lubricate the gears inside and outside with a thin white
lithium grease.

Worm and worm gear as well, or just the reduction/transfer gears?
You can do this as well if you wish. Depends on how much dust you have in
your area.

Rolando


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


Re: questions from a possible 900GTO owner

Roland Christen
 

In a message dated 4/2/2007 12:07:20 PM Central Daylight Time,
J.Zeglinski@rogers.com writes:


(1) poking around with a flashlight to get the 4 screws into the fork base &

adapter, during setup
I can do it blindfolded, and so can anyone else. It is not the difficulty
that you make it out to be. By the way, they are hand knobs, not screws.

Rolando


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


Trade my 900 gto for your mach1 gto

Bruce Karbal <Skyloverz@...>
 

I've got an excellent performin 900gto, excellent condition
with upgraded polar forks,az adjusters, cases and more
I'm interested in trading for a mach 1 gto

e-me off list if yer lookin to upgrade

bruce


maintenance of ap 900 gto cp3

lupodima <lupo.di.mare@...>
 

Dear all
after a 10 months of using my AP 900 gto cp3 was time to check about
little mantenaince on it
I discovered moving the counterweight shaft a bit of play in RA axis
and also a bit of play in DEC axis .
Followed step by step the istruction who Mr. Roland give to us on
ap-gto group i started to adjust my mount succesfully ...all was
adjusted fine.
Losen the screw under the gearbox (the iron not the white)i pressed
whit one figer to improve the coupling between the worm and gear then
opened the gearbox and i checked if the wheeel (the big one) was free
of moving with the hand
...al was ok and the play in both axis was adjusted.
The grease inside the motor gearbox was a bit consummate and i buyed
some lythium grease for take the place of the old one.
One my concern (but not to much ) was that the AR motor gearbox make a
not pleasent sound when slewing at high rate (600x / 1200x)also before
the adjustment.
I discovered when checking for thigtness of the coupling of the worm
who the white gear in RA gearbox have a not linear movement at
64x-600x-1200x (e.g. like a 33rpm disk when play on a turnatable and
the disc is a bit twisted)
then i checked also the DEC for see if also the white gear have the
same behaviour but no problems here.
Now can this have a problem on performance of the mount?
Do i need a replacement gear ( the white one)?
The mount is amazing and i use it with a C9.25 SC Ota and a Pentax
SDHF 75 Ota plus accessory like 2 losmandy plate one for the c9 and
the other for the pentax plus rings as counterweights i use 2 of 26
pounds....you can see my setup in the Photos folder section here :

http://f9g.yahoofs.com/groups/g_1292893/dfdb/__sr_/5650.jpg?gr43SEGBv3i3RaQx

Thanks for your attention
Giorgio


Re: questions from a possible 900GTO owner

Mal Speer <mal@...>
 

For the fellow with the Meade tripod: If you buy the AP mounting
plate all you have to do is drill and tap 4 ΒΌ-20 holes in the Meade
tripod top to match the 4 flat mounting holes in AP 900 mounting
plate. I used an AP 900 with a C14 on a Meade Giant field tripod and
it worked great.
Mal


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

Hi Gil,

I did a few quick measurements of my Losmandy G11 mount
bottom, and saw
the dimension Drawing of the AP900 Pier Adapter Plate, and see it
is easy to
make a "reducing" adapter so that the top of this 2" or 3" tall
ring has the
shape and 6 small screw holes - as though this were the top of any
AP tripod -
to accept the AP900, then is cut inward, to the shape and
dimensions of the
Losmandy head base at the bottom.

Here is a direct link to the AP "Pier Adapter" dimensions
document, at
their Tech Support page, under the AP900 list of PDF documents
(consider this
the same as the bottom of your AP900, which drops into an AP tripod
pipe):

900 Mount Base (Pier Adapter) Dimensions (05-17-00)

The bottom of this plate is the same as the bottom of the AP900
Standard
or Rotating Pier Adapter, which you would be already using on that
mount. Have
your machinist make the top 1/2 inch or so it accepts this base.
The bottom
of the reducing adapter is just a narrower cylinder with 3 holes to
screw in
the Losmandy G11 screws/knobs.
It's like a "gender changer" - female AP900 at the top (like the
pipe), and
G11 male at the bottom.

After that, you can treat the AP900 mount as though it were a
G11 mount -
for your Losmandy tripod - or with MA option, if you like using the
Meade
tripod legs (or any other heavy photographic tripod) with a
Losmandy MA bolted
on top of it.
This "reducing adapter" opens up both Losmandy and Meade tripods
compatibility for the AP900.

I assume you have purchased the optional Losmandy knobs - they
are so
convenient. You might buy an extra set for your G11 adapter. They
make it
soooo easy to just drop the heavy mount straight into it's pier,
knobs and
all.
My plan is to make this "coupler as short as possible", so it
stays
attached to the AP900 mount (pier adapter) permanently, just like
the AP900
actually had a Losmandy G11 mount base. That way, I can simply drop
the AP900
directly into my G11 tripod, or into my Losmandy Meade Pier Adapter
(MA) -
same thing.

The down side, is that the AP900 mount still needs to fit into
your
travelling case - you may have to remove a bit of foam since the
Losmandy
adapter remains screwed to the bottom of the AP mount with those 6
permanent
screws. Since I haven't received my AP900 yet, I can still search
for a
suitable case for it to fit this modified bottom shape.

NOTE:
If you buy a SCOPEGUARD case for the AP900, they use their own
standard AP900
shaped pre-cut foam insert, which won't be cut for that 2 or 3 inch
adapter -
and the case might even then be slightly too small (don't know). I
plan on
using a suitable Pelican case, and remove the foam cubes myself to
fit the end
result.

Since at this point you are just a "possible 900GTO owner" as
you say,
then we are in the same boat. I won't start machining until it
arrives so the
result can be test fitted to both parts.

Meanwhile, show your friend your current G11 tripod, and give
him the
AP900 pier adapter plate dimension diagram, in preparation. It's so
simple, AP
should have done this a long time ago, since a lot of AP mount
owners are
current or former G11 owners as well. Makes VERY good marketing
sense. Heck,
it may even help Scott sell more of HIS tripods, for those like me
who don't
like the AP tripods. Then again ... maybe AP doesn't want to
encourage
customers buying Losmandy's tripods, and Losmandy doesn't want
people buying
AP's mounts instead of his own G11 etc :-)

I'll work on my own sketch for this soon, but I think there is
enough data
for your friend's advice already.

Good luck,
Joe


Re: G11 to 900GTO adapter and question about AP portable piers

Roland Christen
 

In a message dated 4/2/2007 9:58:01 AM Central Daylight Time,
J.Zeglinski@rogers.com writes:


I recently purchased a set of the optional Losmandy glow in the dark
rubber feet for the G11 tripod.
I am not a fan of flexible vibration dampers under tripod feet. Rubber
underneath a mount tripod will cause variable polar alignment as the scope moves
around the sky. Although it might kill vibration, it does flex with the changing
moment arm of the various mount and scope componenets. Not a good idea for
imaging.

Rolando


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


Re: G11 to 900GTO adapter and question about AP portable piers

roy <roystarman@...>
 

You are right it doesn't need to be level but if it isn't you have cross
coupling in your adjustments that can make alignment harder.



_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
Jeff
Sent: Monday, April 02, 2007 1:49 AM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] G11 to 900GTO adapter and question about AP portable
piers



I've owned a G11 w/ the tripod, an AP900 w/ the 46/42/32 inch piers and an
AP1200 w/ the 56 inch pier.

"Bare ground" and the AP Pier? No problem, imo. Maybe even better than
the G11... the feet are closed (about an inch wide metal "foot")... the G11
feet are open and can sink in soft ground.

The G11 does have the advantage of being able to setup on faily non-level
ground. E.g. just adjust the legs to get it level.
(still, I found it a bit of hassle to level with the cut-your-hands tripod
leg knobs (I didnt upgrade).)

The AP portable piers have some amount of "adjustable tilt", but I'd have to
admit the G11 was (obviously) more flexible with leveling.
So, I just bring a couple strips of hardwood and slip these under the AP
feet when to get the pier level.

The AP portable pier "feet" are steel (not aluminum) and I think this is a
plus -- tough as steel. the G11 had soft aluminum.
(For me, I setup frequently on asphault.)

Here's the big big plus of the AP pier over the G11 tripod: The AP pier
takes up less space in the car!
Yes... since the AP legs and rods can go ~inside~ the tube, it takes up very
little space in the car. With the G11, I pretty much loaded the tripod
"setup" in the back the explorer (no head of course).... then jockeyed the
boxes around the pier.

It would be nice if the AP legs had leveling screws on them. That's
probably the only addition. Maybe a differnt way of doing the tension rods
so as to nearly eliminate them.

And everyone I'm sure is going to tell me that the EQ mount ~doesnt~ need to
be level. Yeah.. I suppose so, but I prefer it that way when drift
aligning.


_____

From: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
[mailto:ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com] On Behalf
Of
dtlnew
Sent: Sunday, April 01, 2007 7:39 PM
To: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
Subject: [ap-gto] G11 to 900GTO adapter and question about AP portable piers

Thanks for the responses to my earlier questions. I agree that it
seems like there'd be a small market for G11 tripod to AP mount adapters.

One reason I'm interested in using my G11 tripod with my as yet
unpurchased 900GTO is that sometimes I set up on bare ground and the
G11 tripod seems to handle that well.

How do the AP portable piers handle "ground" setup?

TIA,

-Dick Locke

__________ NOD32 2161 (20070401) Information __________

This message was checked by NOD32 antivirus system.
http://www.eset. <http://www.eset.com> com


Re: maintenance of ap 900 gto cp3

Roland Christen
 

In a message dated 4/2/2007 7:38:51 AM Central Daylight Time,
lupo.di.mare@virgilio.it writes:


I discovered when checking for thigtness of the coupling of the worm
who the white gear in RA gearbox have a not linear movement at
64x-600x-1200x (e.g. like a 33rpm disk when play on a turnatable and
the disc is a bit twisted)
There will always be a small amount of up/down motion at the edge of the gear
disc. This is of no consequence and does not cause the sound that you are
experiencing. Once a year lubricate the gears inside and outside with a thin
white lithium grease.

Rolando


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


Re: G11 to 900GTO adapter and question about AP portable piers

Jeff <jlc@...>
 

I've owned a G11 w/ the tripod, an AP900 w/ the 46/42/32 inch piers and an
AP1200 w/ the 56 inch pier.

"Bare ground" and the AP Pier? No problem, imo. Maybe even better than
the G11... the feet are closed (about an inch wide metal "foot")... the G11
feet are open and can sink in soft ground.

The G11 does have the advantage of being able to setup on faily non-level
ground. E.g. just adjust the legs to get it level.
(still, I found it a bit of hassle to level with the cut-your-hands tripod
leg knobs (I didnt upgrade).)

The AP portable piers have some amount of "adjustable tilt", but I'd have to
admit the G11 was (obviously) more flexible with leveling.
So, I just bring a couple strips of hardwood and slip these under the AP
feet when to get the pier level.

The AP portable pier "feet" are steel (not aluminum) and I think this is a
plus -- tough as steel. the G11 had soft aluminum.
(For me, I setup frequently on asphault.)

Here's the big big plus of the AP pier over the G11 tripod: The AP pier
takes up less space in the car!
Yes... since the AP legs and rods can go ~inside~ the tube, it takes up very
little space in the car. With the G11, I pretty much loaded the tripod
"setup" in the back the explorer (no head of course).... then jockeyed the
boxes around the pier.

It would be nice if the AP legs had leveling screws on them. That's
probably the only addition. Maybe a differnt way of doing the tension rods
so as to nearly eliminate them.

And everyone I'm sure is going to tell me that the EQ mount ~doesnt~ need to
be level. Yeah.. I suppose so, but I prefer it that way when drift
aligning.




_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
dtlnew
Sent: Sunday, April 01, 2007 7:39 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] G11 to 900GTO adapter and question about AP portable piers




Thanks for the responses to my earlier questions. I agree that it
seems like there'd be a small market for G11 tripod to AP mount adapters.

One reason I'm interested in using my G11 tripod with my as yet
unpurchased 900GTO is that sometimes I set up on bare ground and the
G11 tripod seems to handle that well.

How do the AP portable piers handle "ground" setup?

TIA,

-Dick Locke





__________ NOD32 2161 (20070401) Information __________

This message was checked by NOD32 antivirus system.
http://www.eset.com


Re: More follow-up on attaching TOA 150 to AP900

Geoff Carstairs <geoffc@...>
 

Hi everyone,

Just realised my name was truncated - how rude of me :)

My name is Geoff Carstairs. I'm from Melbourne Australia. I've idolised
the AP Starfire refractors since I was a teenager but could never afford
one back then. I am on the waiting list for an AP refractor now, so
fingers crossed that maybe one day ill get the privilege of owning one. :-)

Great forum everyone, very informative; I love reading about AP stuff!


cheers,
Geoff Carstairs


Geoff wrote:


The "hover mouse over image" will only work if javascript from the
bttechnologies site is allowed to execute in your local browser.

Geoff

Jeff wrote:
X-SpamDetect-Info: ------------- Start ASpam results ---------------
X-SpamDetect-Info: See web site for more details
X-SpamDetect: **: 2.100000 IronPort SPAM
scanned=-10.0,From3consonants=0.5,Possible url forgery/scam=2.0,High
tags-to-text ratio=1.8,Copious html comments=4.0,Gifs in
urls=0.8,Aspam=3.0
X-SpamDetect-Info: ------------- End ASpam results -----------------



I very much appreciate it if someone would show
pictures of this
plate, the ring and/or the whole set-up.
http://www.bttechnologies.com/bt_dp.htm
<http://www.bttechnologies.com/bt_dp.htm>
<http://www.bttechnologies.com/bt_dp.htm
<http://www.bttechnologies.com/bt_dp.htm>>

Scroll down to the Tak-02dp plate... Then "mouse over" the image.
You have
to mouse over to see how the rings are attacthed.

jeff




G11 to 900GTO adapter and question about AP portable piers

Dick Locke
 

Thanks for the responses to my earlier questions. I agree that it
seems like there'd be a small market for G11 tripod to AP mount adapters.

One reason I'm interested in using my G11 tripod with my as yet
unpurchased 900GTO is that sometimes I set up on bare ground and the
G11 tripod seems to handle that well.

How do the AP portable piers handle "ground" setup?

TIA,

-Dick Locke


Re: questions from a possible 900GTO owner

roy <roystarman@...>
 

Yes everything is extra. AP is pretty good about letting you know that when
you put in your final payment. There are other sources for counter weights
and Adapter plates, Robin Casady comes to mind. E ahs some different stuff
for AP and Losmandy mounts.



_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
Joseph Zeglinski
Sent: Sunday, April 01, 2007 9:15 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] questions from a possible 900GTO owner



Hi,

Everything for an AP900 is extra, to make the price easier to take when
you first see it, I suppose. Would be nice if there were a check box order
sheet of "essential items", when you buy their mounts. After all, you have
to
have some counter weights, unless the AP900 is for tour snapshot camera, and

you can't just attach it to a stub at the end of the DEC axle :-)
It's sort of having a sit down meal at a restaurant, and asked if you will
be
requiring a plate and cutlery.

I'm going to make an G11 pier converter for myself, as soon as the new
AP900 arrives.
Actually, before I got the unexpected notification, I bought a Losmandy G11
Meade MA tripod adapter, which is just the short tube section at the very
top
6 inches or so of the standard G11 pier. My intent was to use it on my
favourite tripod head, instead of the standard Losmandy one. Then, get a
second MA for a permanent G11 pier in the yard. I really like the design of
the Losmandy pier top.

Well, I have looked at all the combinations, and decided that the Meade
Adapter (MA), is still a good accessory, with it's Losmandy
"drop-in-slot-and
twist" top for a G11. The way I see it, its is a trivial machining task to
make an AP900 to Losmandy MA, "step down, conversion ring" - at most, about
3
inches tall, with the AP's 6 button "post" screws for the bottom of the
AP900.
Then, simply tap 3 holes (3/8-16), for the Losmandy optional mount knob set,

on the 8 inch to 6 inch step down ring, to drop into either the Losmandy
tripod, or into the Losmandy Meade tripod Adapter (MA). That solves a lot of

issues, especially if you don't like the AP portable pier style compared to
the Losmandy tripod.

AP should be selling this "trivial" item - they already sell other
Losmandy dovetails and plates.

Joe

----- Original Message -----
From: "dtlnew" <dtlnew@yahoo. <mailto:dtlnew%40yahoo.com> com>
To: <ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com>
Sent: Sunday, April 01, 2007 12:03 AM
Subject: [ap-gto] questions from a possible 900GTO owner

Hi,

A couple "dumb" questions from someone looking and the possibility of
moving from a G11 to a 900GTO:

1) Does the current production run of the 900GTO mount "come with"
counter-weights, or are they "a la cart?" Can't find anything one way
or the other on the AP web site.

2) Is is possible to mate a 900GTO to a standard Losmandy G11 tripod?
I haven't been able to find any discussion of mating them so I assume
that's not possible/feasible?

Thanks!

-Dick Locke




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Re: questions from a possible 900GTO owner

Joe Zeglinski
 

Hi Gil,

I did a few quick measurements of my Losmandy G11 mount bottom, and saw
the dimension Drawing of the AP900 Pier Adapter Plate, and see it is easy to
make a "reducing" adapter so that the top of this 2" or 3" tall ring has the
shape and 6 small screw holes - as though this were the top of any AP tripod -
to accept the AP900, then is cut inward, to the shape and dimensions of the
Losmandy head base at the bottom.

Here is a direct link to the AP "Pier Adapter" dimensions document, at
their Tech Support page, under the AP900 list of PDF documents (consider this
the same as the bottom of your AP900, which drops into an AP tripod pipe):

900 Mount Base (Pier Adapter) Dimensions (05-17-00)

The bottom of this plate is the same as the bottom of the AP900 Standard
or Rotating Pier Adapter, which you would be already using on that mount. Have
your machinist make the top 1/2 inch or so it accepts this base. The bottom
of the reducing adapter is just a narrower cylinder with 3 holes to screw in
the Losmandy G11 screws/knobs.
It's like a "gender changer" - female AP900 at the top (like the pipe), and
G11 male at the bottom.

After that, you can treat the AP900 mount as though it were a G11 mount -
for your Losmandy tripod - or with MA option, if you like using the Meade
tripod legs (or any other heavy photographic tripod) with a Losmandy MA bolted
on top of it.
This "reducing adapter" opens up both Losmandy and Meade tripods
compatibility for the AP900.

I assume you have purchased the optional Losmandy knobs - they are so
convenient. You might buy an extra set for your G11 adapter. They make it
soooo easy to just drop the heavy mount straight into it's pier, knobs and
all.
My plan is to make this "coupler as short as possible", so it stays
attached to the AP900 mount (pier adapter) permanently, just like the AP900
actually had a Losmandy G11 mount base. That way, I can simply drop the AP900
directly into my G11 tripod, or into my Losmandy Meade Pier Adapter (MA) -
same thing.

The down side, is that the AP900 mount still needs to fit into your
travelling case - you may have to remove a bit of foam since the Losmandy
adapter remains screwed to the bottom of the AP mount with those 6 permanent
screws. Since I haven't received my AP900 yet, I can still search for a
suitable case for it to fit this modified bottom shape.

NOTE:
If you buy a SCOPEGUARD case for the AP900, they use their own standard AP900
shaped pre-cut foam insert, which won't be cut for that 2 or 3 inch adapter -
and the case might even then be slightly too small (don't know). I plan on
using a suitable Pelican case, and remove the foam cubes myself to fit the end
result.

Since at this point you are just a "possible 900GTO owner" as you say,
then we are in the same boat. I won't start machining until it arrives so the
result can be test fitted to both parts.

Meanwhile, show your friend your current G11 tripod, and give him the
AP900 pier adapter plate dimension diagram, in preparation. It's so simple, AP
should have done this a long time ago, since a lot of AP mount owners are
current or former G11 owners as well. Makes VERY good marketing sense. Heck,
it may even help Scott sell more of HIS tripods, for those like me who don't
like the AP tripods. Then again ... maybe AP doesn't want to encourage
customers buying Losmandy's tripods, and Losmandy doesn't want people buying
AP's mounts instead of his own G11 etc :-)

I'll work on my own sketch for this soon, but I think there is enough data
for your friend's advice already.

Good luck,
Joe