Date   

Re: Eye piece tray for AP piers

Felix Luciano
 

Ivan,

Call Tele Vue.
Go to their web site and click the "Eyepiece Caddy Set" link.
From the TV web site: "The set holds three 1¼" eyepieces and two 2"
eyepieces. The 2" holes have removable 1¼" inserts as well."

I bought a few "inserts" for my AP EP tray. Used a little fine sand
paper to smooth out the inner edges of the inserts and the eps
(Radians & Naglers) fit nicely.

Take care - Felix

--- In ap-gto@..., "ivanong" <ivanong@...> wrote:

Hi, I like the AP trays, but do not use any 2" ep. Is there a place
that sells plastic plugs to convert the 2" holes into 1 1/4" holes?
I
would hate to drop a Radian through the hole right now. Maybe these
can
be supplied through AP or sold separately on the website. Universal
Astronomics supplies these plugs for their EP tray.
Thanks!
Ivan


Re: Changing the Slew Speed

Scott <shammo@...>
 

OK, thanks for the information. I will probably wait until someone is
at the observatory before I mess around with this, just in case.

Scott


--- In ap-gto@..., "John Winfield" <winfij@...> wrote:

Can I do this while I'm in the middle of the imaging run?
Sorry, I've never used CCDAP so don't know if you can get to the
scope
setup during a run.

Is this the telescope simulator you are talking about?
No, it's the driver setup. In Maxim (and presumably CCDAP) you can
go
to the scope dialog and bring up the setup window, where you can
configure the ASCOM scope driver settings.

John


--- In ap-gto@..., "Scott" <shammo@> wrote:

John,
Can I do this while I'm in the middle of the imaging run? Is this
the
telescope simulator you are talking about?
Thanks for the reply.

Rick,
Thanks for the tips, I have been running now since August without
any
serious issues. There have been a couple of scarry times, but
with
the webcam I saw the problem and was able to stop before anything
serious happened.

Scott


--- In ap-gto@..., "John Winfield" <winfij@> wrote:

Bring up the setup window for the ASCOM driver and change it in
there.
You're using the ASCOM driver to init/control the mount when
using
those other apps.

John


--- In ap-gto@..., "Scott Hammonds" <shammo@> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x
to
600x
for a
couple of reasons. It's a bit colder now at the remote
observatory
and if
something goes wrong a slower speed will hopefully lessen any
damage
that
could occur if it accidentally slews into the pier. Since I
am
operating
remotely I can't do it via the hand paddle. I was just
checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky,
CCDSoft,
FocusMax. Before I operated remotely, I just changed the
setting
using the
hand paddle. Anyone have a suggestion as to the best way to
make
the
change?
If I change it using Pulse Guide, will it stay set at 600x
there
after
without initializing the mount via Pulse Guide or does it
default
back to
1200x?



Thanks for any ideas.



Scott Hammonds











Eye piece tray for AP piers

ivanong
 

Hi, I like the AP trays, but do not use any 2" ep. Is there a place
that sells plastic plugs to convert the 2" holes into 1 1/4" holes? I
would hate to drop a Radian through the hole right now. Maybe these can
be supplied through AP or sold separately on the website. Universal
Astronomics supplies these plugs for their EP tray.
Thanks!
Ivan


Re: AP900 sensitivity to wind

Roland Christen
 

In a message dated 1/15/2008 10:11:45 PM Central Standard Time,
hsielski@... writes:


Steve,

I assume that the clutches are tight...
Clutches have no effect on the gear mesh. If the gears are not meshed, then
the scope will swing freely between the leading edge and the trailing edge of
the worm gear teeth. Think about it this way, if the worm gear and worm wheel
teeth are totally backed off, then the axis is free to swing 360 degrees around
in a circle, clutch or no clutch.

Rolando


**************
Start the year off right. Easy ways to stay in shape.

http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489


Re: Changing the Slew Speed

John Winfield
 

Can I do this while I'm in the middle of the imaging run?
Sorry, I've never used CCDAP so don't know if you can get to the scope
setup during a run.

Is this the telescope simulator you are talking about?
No, it's the driver setup. In Maxim (and presumably CCDAP) you can go
to the scope dialog and bring up the setup window, where you can
configure the ASCOM scope driver settings.

John


--- In ap-gto@..., "Scott" <shammo@...> wrote:

John,
Can I do this while I'm in the middle of the imaging run? Is this the
telescope simulator you are talking about?
Thanks for the reply.

Rick,
Thanks for the tips, I have been running now since August without any
serious issues. There have been a couple of scarry times, but with
the webcam I saw the problem and was able to stop before anything
serious happened.

Scott


--- In ap-gto@..., "John Winfield" <winfij@> wrote:

Bring up the setup window for the ASCOM driver and change it in
there.
You're using the ASCOM driver to init/control the mount when using
those other apps.

John


--- In ap-gto@..., "Scott Hammonds" <shammo@> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x to
600x
for a
couple of reasons. It's a bit colder now at the remote observatory
and if
something goes wrong a slower speed will hopefully lessen any
damage
that
could occur if it accidentally slews into the pier. Since I am
operating
remotely I can't do it via the hand paddle. I was just checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky,
CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting
using the
hand paddle. Anyone have a suggestion as to the best way to make
the
change?
If I change it using Pulse Guide, will it stay set at 600x there
after
without initializing the mount via Pulse Guide or does it default
back to
1200x?



Thanks for any ideas.



Scott Hammonds









[Non-text portions of this message have been removed]


Re: AP900 sensitivity to wind

twade35
 

Steve,

That's seems strange. There's not very much surface area for the wind
to "tug" at. What did you have the time set for correcting the "drift"
in your autoguider. I've found when imaging during windy conditions, it
is imperative to set it to correct every second or less. Here's an
image of the California nebula I took December 24, 2007, while the wind
was blowing perpendicular to the scope (i.e. worst case) at sustained 20
mph with gusts to 30 mph or more. It was taken with an FSQ-106ED
mounted to an AP 900GTO mount using a FLI Proline 16803 CCD camera.

2400x2400 <http://tinyurl.com/2kj2zw>

1600x1600 <http://tinyurl.com/2koz3q>

Wade


Re: AP900 sensitivity to wind

Steve Peters
 

Yep, tight.

Steve

--- In ap-gto@..., "Hank Sielski" <hsielski@...> wrote:

Steve,

I assume that the clutches are tight...

Hank

On Jan 15, 2008 8:05 PM, Steve Peters <capitoladude@...> wrote:

Hi All,

My AP900 seems to vibrate in even a slight breeze, causing erratic
guiding and some lost shots. I use both an AP160 on it and an FSQ.
Everything is battened down tight, so I'm thinking I may need to
adjust
out some backlash by tightening the gear mesh a bit. Has anyone
else
experienced this and if so, is that how you solved it? The
looseness
seems to be mainly in dec and to a lesser extent in RA. My friend
who
also has an AP900 says his is pretty impervious to light wind,
which is
as I'd expect it to be.

Thanks,

Steve Peters



[Non-text portions of this message have been removed]


Re: AP900 sensitivity to wind

Hank Sielski
 

Steve,

I assume that the clutches are tight...

Hank

On Jan 15, 2008 8:05 PM, Steve Peters <capitoladude@...> wrote:

Hi All,

My AP900 seems to vibrate in even a slight breeze, causing erratic
guiding and some lost shots. I use both an AP160 on it and an FSQ.
Everything is battened down tight, so I'm thinking I may need to adjust
out some backlash by tightening the gear mesh a bit. Has anyone else
experienced this and if so, is that how you solved it? The looseness
seems to be mainly in dec and to a lesser extent in RA. My friend who
also has an AP900 says his is pretty impervious to light wind, which is
as I'd expect it to be.

Thanks,

Steve Peters



AP900 sensitivity to wind

Steve Peters
 

Hi All,

My AP900 seems to vibrate in even a slight breeze, causing erratic
guiding and some lost shots. I use both an AP160 on it and an FSQ.
Everything is battened down tight, so I'm thinking I may need to adjust
out some backlash by tightening the gear mesh a bit. Has anyone else
experienced this and if so, is that how you solved it? The looseness
seems to be mainly in dec and to a lesser extent in RA. My friend who
also has an AP900 says his is pretty impervious to light wind, which is
as I'd expect it to be.

Thanks,

Steve Peters


Re: Changing the Slew Speed

Scott <shammo@...>
 

John,
Can I do this while I'm in the middle of the imaging run? Is this the
telescope simulator you are talking about?
Thanks for the reply.

Rick,
Thanks for the tips, I have been running now since August without any
serious issues. There have been a couple of scarry times, but with
the webcam I saw the problem and was able to stop before anything
serious happened.

Scott


--- In ap-gto@..., "John Winfield" <winfij@...> wrote:

Bring up the setup window for the ASCOM driver and change it in
there.
You're using the ASCOM driver to init/control the mount when using
those other apps.

John


--- In ap-gto@..., "Scott Hammonds" <shammo@> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x to
600x
for a
couple of reasons. It's a bit colder now at the remote observatory
and if
something goes wrong a slower speed will hopefully lessen any
damage
that
could occur if it accidentally slews into the pier. Since I am
operating
remotely I can't do it via the hand paddle. I was just checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky,
CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting
using the
hand paddle. Anyone have a suggestion as to the best way to make
the
change?
If I change it using Pulse Guide, will it stay set at 600x there
after
without initializing the mount via Pulse Guide or does it default
back to
1200x?



Thanks for any ideas.



Scott Hammonds









[Non-text portions of this message have been removed]


Re: Changing the Slew Speed

Richard Seavey
 

Rick
I would like to install limit switches on my AP1200. Would you happen to
have any photos or diagrams of your installation?

Richard

At 11:47 PM 1/15/2008 +0000, you wrote:

Hi Scott,
I have one caution for you as I remotely run a very similar setup
with CCDC. There are many errors that can cause CCDC to abort or the
coputer to lock up and any of these will cause the AP to merrily
continue tracking into the pier. There are several problems when it
hiots the pier...one is that pointing is lost and recover is very
difficult remotely...another is dings, scratches, or even bending of
delicate components in the image train.
I have designed a relay circuit that gets tripped by a microswitch
when the mount slews to far West; however, I found also found the
need to have a limit on the East side.
So , just keep in mind that there are unanticipated failure modes in
our H/W & S/W that can affect other H/W and S/W and very little of
the hardware is designed as failsafe.
Thanks, Rick

--- In <mailto:ap-gto%40yahoogroups.com>ap-gto@..., "Scott
Hammonds" <shammo@...> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x to
600x for a
couple of reasons. It's a bit colder now at the remote observatory
and if
something goes wrong a slower speed will hopefully lessen any
damage that
could occur if it accidentally slews into the pier. Since I am
operating
remotely I can't do it via the hand paddle. I was just checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky,
CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting
using the
hand paddle. Anyone have a suggestion as to the best way to make
the change?
If I change it using Pulse Guide, will it stay set at 600x there
after
without initializing the mount via Pulse Guide or does it default
back to
1200x?



Thanks for any ideas.



Scott Hammonds











Re: Changing the Slew Speed

Wiggins, Rick
 

Hi Scott,
I have one caution for you as I remotely run a very similar setup
with CCDC. There are many errors that can cause CCDC to abort or the
coputer to lock up and any of these will cause the AP to merrily
continue tracking into the pier. There are several problems when it
hiots the pier...one is that pointing is lost and recover is very
difficult remotely...another is dings, scratches, or even bending of
delicate components in the image train.
I have designed a relay circuit that gets tripped by a microswitch
when the mount slews to far West; however, I found also found the
need to have a limit on the East side.
So , just keep in mind that there are unanticipated failure modes in
our H/W & S/W that can affect other H/W and S/W and very little of
the hardware is designed as failsafe.
Thanks, Rick

--- In ap-gto@..., "Scott Hammonds" <shammo@...> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x to
600x for a
couple of reasons. It's a bit colder now at the remote observatory
and if
something goes wrong a slower speed will hopefully lessen any
damage that
could occur if it accidentally slews into the pier. Since I am
operating
remotely I can't do it via the hand paddle. I was just checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky,
CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting
using the
hand paddle. Anyone have a suggestion as to the best way to make
the change?
If I change it using Pulse Guide, will it stay set at 600x there
after
without initializing the mount via Pulse Guide or does it default
back to
1200x?



Thanks for any ideas.



Scott Hammonds









[Non-text portions of this message have been removed]


AP1200 setup strategy?

John Murphy
 

Hi all

This is my first post to this group. I am currently using a 10inch
F4.8 Newtonian reflector on a Losmandy G11 mount and after spending a
great deal of time tuning the mount, I am getting moderate results
from my light polluted garden (my website: www.johnastro.info ). Now
that I have the imaging bug, I have decided to upgrade - I am now on
the waiting list for an AP1200.

The trouble is that I do not have an observatory (my garden is too
small). Instead, I plan to have a permanent pier - with a sun dial
cover for the day time.

My question is, will it be possible to have approximate polar
alignment each night before fine tuning? When removing the RA section
from the fixed pier I plan to only back off one of the azimuth
adjusters. The next time I set up, I will simply re-tighten that
azimuth adjuster. Will this work? Will only having one azimuth
adjuster backed off make placing the RA section on the pier too awkward?

Thanks
John Murphy


Re: AP1200 setup strategy?

Roland Christen
 

In a message dated 1/15/2008 7:19:18 PM Central Standard Time,
john_and_hong@... writes:


My question is, will it be possible to have approximate polar
alignment each night before fine tuning? When removing the RA section
from the fixed pier I plan to only back off one of the azimuth
adjusters. The next time I set up, I will simply re-tighten that
azimuth adjuster. Will this work?
Yes, this will work. Once you have done fine tuning on the adjuster, siply
tape one of them in place and back the other one off. You can now remove the
mount and place it back in the same position and you should be quite close to
your original alignment.

Rolando


**************
Start the year off right. Easy ways to stay in shape.

http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489


Re: Changing the Slew Speed

John Winfield
 

Bring up the setup window for the ASCOM driver and change it in there.
You're using the ASCOM driver to init/control the mount when using
those other apps.

John


--- In ap-gto@..., "Scott Hammonds" <shammo@...> wrote:

I'd like to change the slew speed on my AP1200GTO from 1200x to 600x
for a
couple of reasons. It's a bit colder now at the remote observatory
and if
something goes wrong a slower speed will hopefully lessen any damage
that
could occur if it accidentally slews into the pier. Since I am operating
remotely I can't do it via the hand paddle. I was just checking
Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky, CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting
using the
hand paddle. Anyone have a suggestion as to the best way to make the
change?
If I change it using Pulse Guide, will it stay set at 600x there after
without initializing the mount via Pulse Guide or does it default
back to
1200x?



Thanks for any ideas.



Scott Hammonds









[Non-text portions of this message have been removed]


Changing the Slew Speed

Scott Hammonds <shammo@...>
 

I'd like to change the slew speed on my AP1200GTO from 1200x to 600x for a
couple of reasons. It's a bit colder now at the remote observatory and if
something goes wrong a slower speed will hopefully lessen any damage that
could occur if it accidentally slews into the pier. Since I am operating
remotely I can't do it via the hand paddle. I was just checking Pulse Guide
as an option to do this and that is certainly doable.



I am currently using CCDAutopilot to run everything, The Sky, CCDSoft,
FocusMax. Before I operated remotely, I just changed the setting using the
hand paddle. Anyone have a suggestion as to the best way to make the change?
If I change it using Pulse Guide, will it stay set at 600x there after
without initializing the mount via Pulse Guide or does it default back to
1200x?



Thanks for any ideas.



Scott Hammonds


Re: Antone seen this?

Mark Galiyano Jr <mgjr@...>
 

I don't think foam taped to the pier will protect the equipment from a bad
slew on THAT mount!

_____

From: ap-gto@... [mailto:ap-gto@...] On Behalf Of
uthin8er
Sent: Monday, January 14, 2008 5:29 PM
To: ap-gto@...
Subject: [ap-gto] Antone seen this?



Wasn't this the subject of an earlier discussion?
Looks dangerous! LOL
http://tinyurl. <http://tinyurl.com/2kqbje> com/2kqbje


Antone seen this?

uthin8er <lleege@...>
 

Wasn't this the subject of an earlier discussion?
Looks dangerous! LOL
http://tinyurl.com/2kqbje


Re: AP1200GTO2 RA acting funny

ap1200gto
 

To: Roland,

Thanks for the quick reply.
Everything looks O.K. in the gearbox.
I see the usual movement of the gears
and servo motors I observed a couple of
years ago when you asked me before.

What's different now is the faily audiable
noise coming from the motor and the fact that
sometimes after a slew and after the mount settles,
the stars are trailed in the RA axis of movement.

Are there any other tests I could perform to show you
what is wrong? I do have PemPro. Could that be
used to help figure what maybe wrong?

James


--- In ap-gto@..., chris1011@... wrote:

In a message dated 1/14/2008 8:18:44 AM Central Standard Time,
jrfcomet@... writes:


I recently came back from a Mt. Pinos trip. While there I
experianced a very tight, almost unmovable RA axis.
A tight axis is caused by clutch being tight. This has zero to do
with the
load on the motor. The clutch is simply not letting go and keeping
the axis
tightly attached to the worm gear. please understand that the
action of the clutch
has nothing whatsoever to do with the motor driving the gear.
Tight clutch is
a red herring.


The keypad indicated "motor stall" a couple of times as well.
At first I attributed this to the cold weath; got down to 9 Deg
F!
Motor stall during operation on top of the mountain is almost
always the
result of low battery voltage. The motor sees the same load
whether the clutch is
tightly jammed in or totally loose. Low battery voltage is caused
by cold
temperatures and an old battery. This can cause strange sounds
coming from the
motor gearbox. Best way to figure out what is going on with the
motor and gear
box is to open the gearbox cover and look. Then report what you
see is
happening.

Rolando


**************
Start the year off right. Easy ways to stay in shape.

http://body.aol.com/fitness/winter-exercise?
NCID=aolcmp00300000002489


[Non-text portions of this message have been removed]


Re: AP1200GTO2 RA acting funny

Roland Christen
 

In a message dated 1/14/2008 12:55:08 PM Central Standard Time,
jrfcomet@... writes:


What's different now is the faily audiable
noise coming from the motor and the fact that
sometimes after a slew and after the mount settles,
the stars are trailed in the RA axis of movement.
This is nothing new. All it means is that the RA tracking does not
immediately begin because the gears have been reversed and now have to re-reverse in
order to commence tracking at the sidereal rate. Since this reversal of the
geartrain occurs at the sidereal rate, it will take a second or two for the motor
to engage all the gearteeth of the spur gears and the final worm gear in order
for the teeth to be all lined up to push the moutn in the sidereal direction.
If it takes more than 1-2 seconds, you either have too much play between worm
and worm wheel, or you have a loose pinion gear on the end of the worm shaft,
and it is spinning a bit before it engages the worm gear. If the gear is
loose, then you need to tighten the setscrew (make sure that it lines up with the
flat on the worm shaft). Lots to think about, but the fact that it takes a
moment for the mount to start tracking is normal. All mounts do it to some extent.
We do have a place in the keypad where you can reduce or eliminate this
momentary delay - it's called the RA backlash adjust, but of course you all knew
that, yes?

Rolando


**************
Start the year off right. Easy ways to stay in shape.

http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489