Date   

Re: Balancing the Mach 1

Kurt Mihalco <mihalco@...>
 

Hi George,

My Mach1 behaves exactly the same. I believe this is normal, as I
remember reading somewhere (this list?) that the bearings have a
significant pre-load. I found that compared to my 600, the Mach1
needs more weight to balance. I wound up ordering the 14" CW shaft
used on the 900, and find it works great.

Regards,
Kurt M

--- In ap-gto@yahoogroups.com, "George Whitney" <gwhitney@...> wrote:

Question for others with Mach 1:



I have noticed that it is difficult to balance the Mach 1 when
loaded with
an AP 155 and several weights. Unlike the AP 900 and AP 1200 mounts
which
seem to turn easily when heavily weighted and one can balance by a
simply
finger push and watch the coasting of the axis, the Mach 1 requires
a hefty
hand push and there is no coasting at all. Were the mount not right
out of
the box, I would assume that the "nylon clutch balls" were squished.
However, when there is no weight on the mount, it seems to turn
much more
easily. Is this just a factor of a smaller mount or is there a
bearing
issue?



I'd appreciate any other experiences with Mach 1 balancing.



Thank you,

George


Re: Balancing the Mach 1

Jeff Young <jey@...>
 

George --

I'd guess it's a function of the weight to bearing surface ratio. The
1200 doesn't coast much with 250 lbs on it.

I keep meaning to get a fish scale, but the mount doesn't seem terribly
bothered by the fact that I can't balance it very closely.

-- Jeff.


________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of George Whitney
Sent: Friday, June 08, 2007 9:17 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Balancing the Mach 1



Question for others with Mach 1:

I have noticed that it is difficult to balance the Mach 1 when
loaded with
an AP 155 and several weights. Unlike the AP 900 and AP 1200
mounts which
seem to turn easily when heavily weighted and one can balance by
a simply
finger push and watch the coasting of the axis, the Mach 1
requires a hefty
hand push and there is no coasting at all. Were the mount not
right out of
the box, I would assume that the "nylon clutch balls" were
squished.
However, when there is no weight on the mount, it seems to turn
much more
easily. Is this just a factor of a smaller mount or is there a
bearing
issue?

I'd appreciate any other experiences with Mach 1 balancing.

Thank you,

George


Re: Balancing the declination axis

Jeff Young <jey@...>
 

Which reminds me... I still have the two radius blocks mounted to the
front of my OTA from when I had upper and lower dovetail plates attached
(before moving to rings). They add a bit of weight to the front, and
give a nice surface to seat the dewshield against.

Had forgotten about that until Anthony's comment about the extra
rings....

-- Jeff.



________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of ayiomamitis
Sent: Friday, June 08, 2007 8:33 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re: Balancing the declination axis



Gavin,

I have a similar problem with my AP160 with CCD camera attached.
Since
I have a Losmandy plate on top of the rings for a piggyback
scope, I
have used two pairs of Losmandy rings as pseudo-weights to
balance
everything.

Not the most elegant solution but it works nicely. Prior to
selling my
Pronto, I always had it piggyback and used that for properly
balancing
everything.

Anthony.

--- In ap-gto@yahoogroups.com <mailto:ap-gto%40yahoogroups.com>
, "Gavin Bray" <gavbray@...> wrote:
>
> Hello
>
> I have a 14" LX200R mounted on a AP1200 with the 1200RP
mounting plate
> and Parallax Instruments rings.
>
> There's not enough adjustment of the OTA in the rings to
balance it in
> the declination axis.
>
> Does this mean I need to purchase a tube counterweight?
>
> If so, any recommendations?
>
> Is there some alternative??
>
> Thanks
> Gavin
>


Balancing the Mach 1

George Whitney <gwhitney@...>
 

Question for others with Mach 1:



I have noticed that it is difficult to balance the Mach 1 when loaded with
an AP 155 and several weights. Unlike the AP 900 and AP 1200 mounts which
seem to turn easily when heavily weighted and one can balance by a simply
finger push and watch the coasting of the axis, the Mach 1 requires a hefty
hand push and there is no coasting at all. Were the mount not right out of
the box, I would assume that the "nylon clutch balls" were squished.
However, when there is no weight on the mount, it seems to turn much more
easily. Is this just a factor of a smaller mount or is there a bearing
issue?



I'd appreciate any other experiences with Mach 1 balancing.



Thank you,

George


Re: Balancing the declination axis

ayiomamitis
 

Gavin,

I have a similar problem with my AP160 with CCD camera attached. Since
I have a Losmandy plate on top of the rings for a piggyback scope, I
have used two pairs of Losmandy rings as pseudo-weights to balance
everything.

Not the most elegant solution but it works nicely. Prior to selling my
Pronto, I always had it piggyback and used that for properly balancing
everything.

Anthony.

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

Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin


Re: Balancing the declination axis

 

Or the AP plate that is the original tip-in - the DOVELM16..........
http://www.astro-physics.com/products/accessories/mounting_plates/mounting_plates.htm


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 kgkirkley@aol.com
Sent: Friday, June 08, 2007 11:56 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Balancing the declination axis




In a message dated 6/8/07 5:35:20 AM, gavbray@gmail. <mailto:gavbray%40gmail.com> com writes:

Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin
Gavin:

Depends on how unbalanced it is.
The 1200 will tolerate some imbalance.
More than likely yours is tail heavy, anyway you can add weight to the front
should balance it.

A lot of us adjustable saddles (like the Cassady Tip-In) for this very
reason.

Kent Kirkley

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


Re: Balancing the declination axis

 

Another similar option is to join a few ankle weights that wrap around the ankle and attach with velcro (great stuff). You can probably find them in sporting goods departments.


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 Joseph Zeglinski
Sent: Friday, June 08, 2007 10:11 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Balancing the declination axis



Hi Gavin,
Just another OTA balancing approach.

In case you go for an OTA counterweight - I have a Questar-7 which came
with a "cumber bun" looking OTA counterweight. It is just one of those soft
lead sheets covered on both surfaces in thick Mylar, with Velcro end flaps to
secure it when it is wrapped around the 9 inch OTA. It is a standard Questar
product for the Q7. The nice thing is that it doesn't need screws for
attachment, and can be positioned around the OTA, at any point of it's length,
for counter balancing. In the old days of drafting tables, they used to sell
large drafting table weighted "cover sheets" made of similar material - to
keep the thin drafting sheets from sliding to the floor overnight. If you
could find an architectural supply store, perhaps they still have them - then
cut up a strip to suit your OTA and weight needed.

Otherwise, you could purchase or two of these belts from Questar and join
the Velcro tabs end to end to fit your OTA diameter. At 3 lbs, maybe one might
suffice, and you could make up the missing length with a span of Velcro -
sewing supply stores would have them in very wide widths.

The Questar-7 lead OTA weight "cumber bun" measures 26"L x 6"W x 1/8"
thick, and weighs 3 lbs.

Joe

----- Original Message -----
From: "Gavin Bray" < gavbray@gmail. <mailto:gavbray%40gmail.com> com>
To: < ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com>
Sent: Friday, June 08, 2007 6:30 AM
Subject: [ap-gto] Balancing the declination axis

Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin



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Yahoo! Groups Links




Re: Balancing the declination axis

Joe Zeglinski
 

Hi Gavin,
Just another OTA balancing approach.

In case you go for an OTA counterweight - I have a Questar-7 which came
with a "cumber bun" looking OTA counterweight. It is just one of those soft
lead sheets covered on both surfaces in thick Mylar, with Velcro end flaps to
secure it when it is wrapped around the 9 inch OTA. It is a standard Questar
product for the Q7. The nice thing is that it doesn't need screws for
attachment, and can be positioned around the OTA, at any point of it's length,
for counter balancing. In the old days of drafting tables, they used to sell
large drafting table weighted "cover sheets" made of similar material - to
keep the thin drafting sheets from sliding to the floor overnight. If you
could find an architectural supply store, perhaps they still have them - then
cut up a strip to suit your OTA and weight needed.

Otherwise, you could purchase or two of these belts from Questar and join
the Velcro tabs end to end to fit your OTA diameter. At 3 lbs, maybe one might
suffice, and you could make up the missing length with a span of Velcro -
sewing supply stores would have them in very wide widths.

The Questar-7 lead OTA weight "cumber bun" measures 26"L x 6"W x 1/8"
thick, and weighs 3 lbs.

Joe

----- Original Message -----
From: "Gavin Bray" <gavbray@gmail.com>
To: <ap-gto@yahoogroups.com>
Sent: Friday, June 08, 2007 6:30 AM
Subject: [ap-gto] Balancing the declination axis


Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

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: Pin Out info for the Guider RJ-11 Plug

Bill Conner <wmtconner@...>
 

Thanks Howard. The reference is appreciated.

Now all I have to do is verify that SBIG's +X is East and +Y is North.

I have a drawing for their Relay Adapter Box cable, so I know how the
SBIG Camera DB9 pins are designated.

--- In ap-gto@yahoogroups.com, "Howard" <howard@...> wrote:

It's right here!



http://www.astro-physics.com/tech_support/mounts/servo/rj11pinout.htm



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf
Of Bill Conner
Sent: Friday, June 08, 2007 1:26 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Pin Out info for the Guider RJ-11 Plug



I'm looking for the pin-out arrangement for the AP guider input plug.
I need to make up an adapter cable to go from an ST-10 camera DB9
Plug to and RJ-11 plug.

A reference would be helpful.

Thanks!







Re: Balancing the declination axis

michael mcdermott <classicstone9474@...>
 

Hi Garvin, As Jeff has stated I have a aluminium dew shield that I hack-sawed down the length due to dome clearance problem (in a Sirius Home model). I have a 14" sct wth Orion 80 ed guide scope. The dew shield helps balance the scope on my AP1200GTO. I also customed design my own Declination weights from 2" hex bar stock. I tapped threaded the ends of the bar stock and bolted it thru the holes that are already in the AP ribbed Plate. I also drilled a hole thru the face of the hex stock, this is how I can add additional weights to the front of the scope if I need to attach my Dream Machine camera on the rear. - Mike

Gavin Bray <gavbray@gmail.com> wrote: Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin


Re: Pin Out info for the Guider RJ-11 Plug

Howard Hedlund
 

It's right here!



http://www.astro-physics.com/tech_support/mounts/servo/rj11pinout.htm



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf
Of Bill Conner
Sent: Friday, June 08, 2007 1:26 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Pin Out info for the Guider RJ-11 Plug



I'm looking for the pin-out arrangement for the AP guider input plug.
I need to make up an adapter cable to go from an ST-10 camera DB9
Plug to and RJ-11 plug.

A reference would be helpful.

Thanks!


Re: Balancing the declination axis

Jeff Young <jey@...>
 

Gavin --

I've got a similar setup (16" LX200GPS OTA in Parallax rings on
1200GTO), but with a 4" refractor on top. The refractor is front-heavy
enough that if I mount it reasonably far forward it balances things out.

I use a short, flexible, felt-lined ABS dew shield. I imagine a
full-length aluminium one would weigh considerably more, and help to
balance things (as well as controlling dew and ambient light). Do you
have a dew shield, or is your location dry enough not to need one?

Barring that, then yes, you'd need to attach some sort of counterweight
to the front. Losmandy has some weights on threaded rods that normally
attach to dovetail blocks, but you could probably drill and tap the
front of your 1200RP plate to attach it.

I'm going to guess based on your name and your post regarding the
southern hemisphere that you're in Australia. Do they use lead flashing
on roofs down there? If so, you could poke a couple of holes in a strip
of lead and use the larger screws around the front cell (the ones
normally used to attach a dovetail) to attach it to the underside of the
cell.

-- Jeff.



________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of Gavin Bray
Sent: Friday, June 08, 2007 11:31 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Balancing the declination axis



Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting
plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance
it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin


Re: Balancing the declination axis

Kent Kirkley
 

In a message dated 6/8/07 12:07:39 PM, marj@astro-physics.com writes:


Or the AP plate that is the original tip-inĀ  - the DOVELM16..........
http://www.astro-physics.com/products/accessories/mounting_plates/mounting_pl
ates.htm
Right Marj.......sorry I left that one out.

Kent Kirkley


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


Re: Balancing the declination axis

Roland Christen
 

In a message dated 6/8/2007 5:35:29 AM Central Daylight Time,
gavbray@gmail.com writes:


There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?
If it is a lot out of balance you may need to add a counterweight to the
tube. A small amount ~ 3 - 4 lb is not going to cause any problem for the mount.

Roland Christen


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


Re: Balancing the declination axis

Kent Kirkley
 

In a message dated 6/8/07 5:35:20 AM, gavbray@gmail.com writes:


Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin
Gavin:

Depends on how unbalanced it is.
The 1200 will tolerate some imbalance.
More than likely yours is tail heavy, anyway you can add weight to the front
should balance it.

A lot of us adjustable saddles (like the Cassady Tip-In) for this very
reason.

Kent Kirkley


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


Polar alignment scope in the southern hemisphere

Gavin Bray
 

Hello

Has anyone managed to successfully use the AP polar aligment scope in
the southern hemisphere?

I spent some time with this but gave up in the end and just wondered
if others have had more luck.

Regards
Gavin


Balancing the declination axis

Gavin Bray
 

Hello

I have a 14" LX200R mounted on a AP1200 with the 1200RP mounting plate
and Parallax Instruments rings.

There's not enough adjustment of the OTA in the rings to balance it in
the declination axis.

Does this mean I need to purchase a tube counterweight?

If so, any recommendations?

Is there some alternative??

Thanks
Gavin


Pin Out info for the Guider RJ-11 Plug

Bill Conner <wmtconner@...>
 

I'm looking for the pin-out arrangement for the AP guider input plug.
I need to make up an adapter cable to go from an ST-10 camera DB9
Plug to and RJ-11 plug.

A reference would be helpful.

Thanks!


Re: New Mach1 GTOCP3 Box

 

Dear Bryon,

For non-EU customers, the control boxes are the same with the exception of the black vs. white. However, all mounts going to EU countries have control boxes that are also green (lead-free).


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 Bryon Schwartz
Sent: Thursday, June 07, 2007 4:51 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] New Mach1 GTOCP3 Box




I was curious to know if there is any real difference in the control
box between the first run and the second run? Obviously, one is white
and the other is black but I'm assuming the only real difference is the
white one is leaded and the black one is unleaded.

Bryon


New Mach1 GTOCP3 Box

Bryon Schwartz <bryonnmissy@...>
 

I was curious to know if there is any real difference in the control
box between the first run and the second run? Obviously, one is white
and the other is black but I'm assuming the only real difference is the
white one is leaded and the black one is unleaded.

Bryon