Date   

upgrading to CP3GOTO

Dean Salman <cluster@...>
 

I have done almost every upgrade to my 5 year old mount so is it worth
upgrading to CP3GOTO. Never knew what the exact differences were. I
have CP2


Re: Need Help Slewing issues

Joe Zeglinski
 

Hi Dean.

F.Y.I.
In the olden days of mainframes and minicomputers, serial cables were commonly sold upto a maximum 25 foot standard length, at 1200 baud I believe, because that was just about the "limit of reliable communications" (ANS standard), depending on baud rate - unless you ordered special "shielded twisted pair", which typically would go 50 to 100 feet at high baud rates of about 9.6 KB, (or you used four wire or even two wire current loop comms, which were good for a couple of miles, or even differential pair RS-432/429 ).

So, I am not surprised that the 25 foot cable dropped command characters to the servo, especially at 19.2 KB, or even 9600B from the laptop.

Joe

----- Original Message -----
From: "Dean Salman" <cluster@...>
To: <ap-gto@...>
Sent: Wednesday, October 01, 2008 11:58 AM
Subject: [ap-gto] Re: Need Help Slewing issues


Thanks for the information. Last night I gave him my backup serial
cable and for the first time had no issues, temps were about the same
if not colder. His cable did not look to be the best but also was
very long, maybe 25ft. I don't think distance is an issue and as I
said, even though the calbe seemed ok, it looked worned out.


Re: Random Keypad Resets

Mark Clegg
 

Philip,

I have had intermittent keypad resets now for almost 5 years..

These "resets" were getting worse as time passed.. I worked with AP
many times to resolve the issue.. First I replaced my power supply to
eliminate it as a potential problem.

The only thing I have found to be a good "temporary" fix is to follow
the instructions Howard describes in his earilier post.. Bad
connections (oxidation, loose connections) have been the only
problems I have found that have caused this problem in my case.

The oxidation on the pin connections inside the keypad itself is not
normally detectable to the eye, but it is there. Follow Howard's
instructions and the reset will go away..... but in my case it has
returned about every 3-4 months.

My AP1200 is permanently mounted in a observatory year round.. My
mount is used 3-4 times a week average. Being exposed to the
elements ......weather during observing sessions (dew conditions,
etc.) repeatedly is what I feel is the real reason for the oxidation
build-up.

I now clean all connections every 3-4 months or at the first sign of
a reset.

Mark Clegg




--- In ap-gto@..., Philip Perkins <ppml3@...> wrote:

I use the keypad exclusively with my 900 GTO. Recently the keypad
has been intermittently resetting again. It's been getting
gradually
worse and I'm anxious to fix it before setting off to France in two
weeks.

By 'reset' I mean that the keypad makes a clicking noise, the
display
goes through the Astro-Physics startup sequence (as though it had
just been powered up), it ends up in 'bright' mode in the base
startup menu, and I lose various settings such as the current
object,
slew speeds, etc. Interestingly the Meridian Delay setting seems
to
be retained. This reset occurs randomly and for no apparent
reason,
most usually during an imaging session while I am away from the
mount. But two nights ago I saw this happening - I was close by the
mount (but not touching anything) and the keypad suddenly went
through 6-7 resets in rapid succession. It sounded like a camera
shutter going off at high speed. I recently changed to a new 13.8V
5A PSU but it has made no difference to the problem.

I realise this has no effect on the mount controller which still
knows where it is pointing but having a hand controller that
randomly
goes berserk is disconcerting, as well as the loss of settings.

In the past I have temporarily solved this by having a good general
'poke around' inside the hand controller, trying to clean / firm up
connectors, etc. I can certainly do this again, of course. But
ultimately a 'random poke around' can't be a good solution. I
wonder
if by now there is some sort of consensus as to what most usually
causes the random keypad reset issue? I would love to solve it.

Many thanks for any help!
Philip
--
Philip Perkins
<ppml3@...>
Wiltshire UK & Luberon France
www.astrocruise.com
--
Note: the above email address may change in future.
To find my latest email address please visit: www.astrocruise.com
and click the "Send Email" link.
--


Re: Random Keypad Resets

Dean Salman <cluster@...>
 

be sure your cable mounts that hold the cable to the keypad are in
tack, mind was missing one half and that was fixed after I got it
back from AP


--- In ap-gto@..., Philip Perkins <ppml3@...> wrote:

I use the keypad exclusively with my 900 GTO. Recently the keypad
has been intermittently resetting again. It's been getting
gradually
worse and I'm anxious to fix it before setting off to France in two
weeks.

By 'reset' I mean that the keypad makes a clicking noise, the
display
goes through the Astro-Physics startup sequence (as though it had
just been powered up), it ends up in 'bright' mode in the base
startup menu, and I lose various settings such as the current
object,
slew speeds, etc. Interestingly the Meridian Delay setting seems
to
be retained. This reset occurs randomly and for no apparent
reason,
most usually during an imaging session while I am away from the
mount. But two nights ago I saw this happening - I was close by the
mount (but not touching anything) and the keypad suddenly went
through 6-7 resets in rapid succession. It sounded like a camera
shutter going off at high speed. I recently changed to a new 13.8V
5A PSU but it has made no difference to the problem.

I realise this has no effect on the mount controller which still
knows where it is pointing but having a hand controller that
randomly
goes berserk is disconcerting, as well as the loss of settings.

In the past I have temporarily solved this by having a good general
'poke around' inside the hand controller, trying to clean / firm up
connectors, etc. I can certainly do this again, of course. But
ultimately a 'random poke around' can't be a good solution. I
wonder
if by now there is some sort of consensus as to what most usually
causes the random keypad reset issue? I would love to solve it.

Many thanks for any help!
Philip
--
Philip Perkins
<ppml3@...>
Wiltshire UK & Luberon France
www.astrocruise.com
--
Note: the above email address may change in future.
To find my latest email address please visit: www.astrocruise.com
and click the "Send Email" link.
--


Re: Need Help Slewing issues

Dean Salman <cluster@...>
 

Thanks for the information. Last night I gave him my backup serial
cable and for the first time had no issues, temps were about the same
if not colder. His cable did not look to be the best but also was
very long, maybe 25ft. I don't think distance is an issue and as I
said, even though the calbe seemed ok, it looked worned out.





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

In a message dated 9/30/2008 2:55:45 PM Central Daylight Time,
cluster@... writes:


The telescope is pointing to the star Capella and I tell the Sky6
to
slew to M31 which is on the western part of the sky. When the
telecope moves, the white cursor in the Sky jumps down to the low
southeastern area and moves with the Scope for about 10 degrees.
If
I tell the sky to move back to Capella, it does this ok.

If I reverse this and move from the M31 to Capella, the scope
moves
from west to east ok.

Also, this did not happen in th eearly evening, later when it was
about 40F.
A move command is not a continuous command. It is sent only once to
the
mount, after which there is no more move command. In other words,
there is not a
continuous series of commands being sent to the servo while the
mount is moving.
It gets one command only at the very beginning right after you
click on the
object which you want to move to. The servo takes this intital
command and does
the slewing to that object, whatever the command was in RA and DEC.
The fact
that it went somewhere other than where you pointed does not mean
that the
mount is lost. It simply means that it received a command to move
to that spot
where it was asked to move, which may very well be NOT where you
think it should
have moved to. When you asked it via your software to move back to
Capella,
the mount went to that RA/DEC co-ordinate because it was told to go
to that
exact co-ordinate. The fact that it went there tells you that the
mount is not
lost.

It is very possible that your laptop is having an issue at the low
temp. The
mount does not care what the temperature is, and will work even in
extreme
sub-zero arctic conditions. However, laptops can and do mess up
when the temp is
low, and it is possible that the numbers being sent to the mount
were not the
correct ones for M31, rather they might have been scrambled up for
whatever
reason - inside your laptop. The only way to know this is to
monitor your port
traffic with a program such as PortMon. That way you can tell what
is actually
being sent to the mount, and you and I don't have to play any
guessing games.

Rolando


**************
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and
information, tips
and calculators.
(http://www.walletpop.com/?NCID=emlcntuswall00000001)


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


Re: Random Keypad Resets

Howard Hedlund
 

Hi Phillip,



With keypad resets, the order in which to check things is as follows:

1. Verify that you have an adequate power supply. You have done
this
2. Check and possibly spread the center pin on the GTOCPx control
box's power receptacle. You have done this as well
3. Remove oxidation from the keypad's internal main cable plug
connection. We have found a product called DeoxIT D5 to be very
effective. It is available at many electronics stores and at
electronic music stores - it seems to be very popular among rock band
sound men. It is also available on the web:

a. http://store.caig.com/s.nl/sc.2/.f
b. Open the keypad and unplug the main cable from the main
board
c. Lightly burnish the pins on the main board with very
fine grit emery
d. Spray some DeoxIT D5 onto a Q-tip and clean the pins
e. Spray a small amount into the blue amp connector of the
cable, and then immediately work the plug on and off of the pins several
times to clean the inside of the plug.
f. Clean off the pins a second time, since they will now
have some contamination from the inside of the plug. You may want to
repeat "d" and "e" a time or two until your Q-tip no longer picks up any
residue from the pins. Use a clean Q-tip for each repetition.

4. While you are at it, clean all of the internal plug contacts
this way. BE SURE that you note the correct orientation of each plug
before removing, so you can put it back correctly. In general, the
wires coming out of the plugs usually face towards the inside of the
keypad.
5. If this is unsuccessful, give me a call at Astro-Physics to take
the next step.



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of Philip Perkins
Sent: Wednesday, October 01, 2008 7:33 AM
To: ap-gto@...
Subject: Re: [ap-gto] Re: Random Keypad Resets



Hi Chris,

Many thanks for your help! The mount controller light remains on
consistently when the keypad resets - I was lucky enough to see this
a couple of nights ago. The mount controller does not seem to be
affected at all when the keypad resets - it continues tracking the
object with no change and the mount's coordinates are not
affected. I have spread out the pins on the central conductor
several times since owning the mount (about 8 years) as well as
cleaning all contacts with contact cleaner. I carefully check the
integrity of all connections when assembling the mount - I last did
this about a week ago and will do it again in 3 weeks when in southern
France.

I believe this is due to something internal to the keypad. I have
seen this kind of problem (and similar intermittency problems) on and
off over the past 6-7 years on two separate keypads. Having a
general 'poke around' inside the keypad usually fixes it for a while
- it may be OK for several months, perhaps a year, but then the
problem will start again. I am trying to see if there is some
generally identified cause, rather than doing a random 'poke around'
inside the keypad each time. It might be the battery connections or
a low battery - thanks for that - I will certainly check this (as I
generally do) when I check the inside of the keypad.

Whatever it is it can sometimes cause the 'rapid fire' resets I
described earlier (6 or 7 resets in rapid succession) - I have seen
this happen a few times in the past.

I may see this problem more than most because I use the keypad
exclusively for controlling the mount...

Many thanks!
Philip
--
At 12:48 01/10/2008, you wrote:

Sounds like a power reset to your mount. Does the power LED on the
mount flicker during these times? If so, it could be the power
connector to your mount - they can loosen up over time. Both of my
mounts have done this. Use a screw driver (or similar tool) to spread
out those pins on the power connector and you should be fine.

If that's not it, check the keypad internal battery and it's
connection points.

cheers,
Chris
Philip Perkins
<ppml3@... <mailto:ppml3%40astrocruise.com> >
Wiltshire UK & Luberon France
www.astrocruise.com
--
Note: the above email address may change in future.
To find my latest email address please visit: www.astrocruise.com
and click the "Send Email" link.
--


Re: Hello from new member with a setup question

Howard Hedlund
 

Oooooops! You are correct. Degrees: minutes: seconds. Sorry for
the blunder!



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of Mike Dodd
Sent: Tuesday, September 30, 2008 8:01 PM
To: ap-gto@...
Subject: [ap-gto] Hello from new member with a setup question



hello to the group. I expect to receive my (secondhand) AP1200 GTO
late next week, and I can barely wait. :-) Reading through the GTO
keypad manual, I ran across this statement on page 15:

"Your latitude and longitude must be entered using degrees: hours:
minutes format."

Hours?? Shouldn't that be degrees, minutes, and seconds? I've always
entered my longitude in TheSky and in other mounts I've owned using
DDD:MM:SS, and latitude using DD:MM:SS.

Thanks in advance to anyone who can clarify this for me.

Mike
-----

Mike Dodd
Montpelier, VA USA
http://astronomy.mdodd.com <http://astronomy.mdodd.com>


Re: Random Keypad Resets

William R. Mattil <wrmattil@...>
 

Philip Perkins wrote:
I use the keypad exclusively with my 900 GTO. Recently the keypad has been intermittently resetting again. It's been getting gradually worse and I'm anxious to fix it before setting off to France in two weeks.

By 'reset' I mean that the keypad makes a clicking noise, the display goes through the Astro-Physics startup sequence (as though it had just been powered up), it ends up in 'bright' mode in the base startup menu, and I lose various settings such as the current object, slew speeds, etc. Interestingly the Meridian Delay setting seems to be retained. This reset occurs randomly and for no apparent reason, most usually during an imaging session while I am away from the mount. But two nights ago I saw this happening - I was close by the mount (but not touching anything) and the keypad suddenly went through 6-7 resets in rapid succession. It sounded like a camera shutter going off at high speed. I recently changed to a new 13.8V 5A PSU but it has made no difference to the problem.

I realise this has no effect on the mount controller which still knows where it is pointing but having a hand controller that randomly goes berserk is disconcerting, as well as the loss of settings.

In the past I have temporarily solved this by having a good general 'poke around' inside the hand controller, trying to clean / firm up connectors, etc. I can certainly do this again, of course. But ultimately a 'random poke around' can't be a good solution. I wonder if by now there is some sort of consensus as to what most usually causes the random keypad reset issue? I would love to solve it.

Many thanks for any help!

Hi Phillip,

From my own personal experience, check the power plug on the CP0X box and try and determine if it might be a trifle loose. The center pins can be gently spread to make better contact if it is. Then even after doing that, in my case it was a little loose, I replaced the Battery in the Keypad and my problem went away.


Best Regards

Bill


Re: Random Keypad Resets

Philip Perkins <ppml3@...>
 

Hi Chris,

Many thanks for your help! The mount controller light remains on consistently when the keypad resets - I was lucky enough to see this a couple of nights ago. The mount controller does not seem to be affected at all when the keypad resets - it continues tracking the object with no change and the mount's coordinates are not affected. I have spread out the pins on the central conductor several times since owning the mount (about 8 years) as well as cleaning all contacts with contact cleaner. I carefully check the integrity of all connections when assembling the mount - I last did this about a week ago and will do it again in 3 weeks when in southern France.

I believe this is due to something internal to the keypad. I have seen this kind of problem (and similar intermittency problems) on and off over the past 6-7 years on two separate keypads. Having a general 'poke around' inside the keypad usually fixes it for a while - it may be OK for several months, perhaps a year, but then the problem will start again. I am trying to see if there is some generally identified cause, rather than doing a random 'poke around' inside the keypad each time. It might be the battery connections or a low battery - thanks for that - I will certainly check this (as I generally do) when I check the inside of the keypad.

Whatever it is it can sometimes cause the 'rapid fire' resets I described earlier (6 or 7 resets in rapid succession) - I have seen this happen a few times in the past.

I may see this problem more than most because I use the keypad exclusively for controlling the mount...

Many thanks!
Philip
--
At 12:48 01/10/2008, you wrote:

Sounds like a power reset to your mount. Does the power LED on the
mount flicker during these times? If so, it could be the power
connector to your mount - they can loosen up over time. Both of my
mounts have done this. Use a screw driver (or similar tool) to spread
out those pins on the power connector and you should be fine.

If that's not it, check the keypad internal battery and it's
connection points.

cheers,
Chris

Philip Perkins
<ppml3@...>
Wiltshire UK & Luberon France
www.astrocruise.com
--
Note: the above email address may change in future.
To find my latest email address please visit: www.astrocruise.com
and click the "Send Email" link.
--


Re: Random Keypad Resets

Chris Curran <curran.chris@...>
 

Sounds like a power reset to your mount. Does the power LED on the
mount flicker during these times? If so, it could be the power
connector to your mount - they can loosen up over time. Both of my
mounts have done this. Use a screw driver (or similar tool) to spread
out those pins on the power connector and you should be fine.

If that's not it, check the keypad internal battery and it's
connection points.

cheers,
Chris


Random Keypad Resets

Philip Perkins <ppml3@...>
 

I use the keypad exclusively with my 900 GTO. Recently the keypad has been intermittently resetting again. It's been getting gradually worse and I'm anxious to fix it before setting off to France in two weeks.

By 'reset' I mean that the keypad makes a clicking noise, the display goes through the Astro-Physics startup sequence (as though it had just been powered up), it ends up in 'bright' mode in the base startup menu, and I lose various settings such as the current object, slew speeds, etc. Interestingly the Meridian Delay setting seems to be retained. This reset occurs randomly and for no apparent reason, most usually during an imaging session while I am away from the mount. But two nights ago I saw this happening - I was close by the mount (but not touching anything) and the keypad suddenly went through 6-7 resets in rapid succession. It sounded like a camera shutter going off at high speed. I recently changed to a new 13.8V 5A PSU but it has made no difference to the problem.

I realise this has no effect on the mount controller which still knows where it is pointing but having a hand controller that randomly goes berserk is disconcerting, as well as the loss of settings.

In the past I have temporarily solved this by having a good general 'poke around' inside the hand controller, trying to clean / firm up connectors, etc. I can certainly do this again, of course. But ultimately a 'random poke around' can't be a good solution. I wonder if by now there is some sort of consensus as to what most usually causes the random keypad reset issue? I would love to solve it.

Many thanks for any help!
Philip
--
Philip Perkins
<ppml3@...>
Wiltshire UK & Luberon France
www.astrocruise.com
--
Note: the above email address may change in future.
To find my latest email address please visit: www.astrocruise.com
and click the "Send Email" link.
--


Re: Random Keypad Resets

Roland Christen
 

In a message dated 10/1/2008 7:34:22 AM Central Daylight Time,
ppml3@... writes:


Many thanks for your help! The mount controller light remains on
consistently when the keypad resets - I was lucky enough to see this
a couple of nights ago. The mount controller does not seem to be
affected at all when the keypad resets - it continues tracking the
object with no change and the mount's coordinates are not
affected. I
The light will not flicker even if the connection is interrupted momentarily.
This is not a good indicator of a loose connection. Spread the tines on the
power connector. Poor connection here is the most likely cause of your keypad
resets. The keypad internal battery will not cause this problem either.

Rolando


**************
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information, tips
and calculators.
(http://www.walletpop.com/?NCID=emlcntuswall00000001)


Re: Random Keypad Resets

Roland Christen
 

In a message dated 10/1/2008 5:58:09 AM Central Daylight Time,
ppml3@... writes:


By 'reset' I mean that the keypad makes a clicking noise, the display
goes through the Astro-Physics startup sequence (as though it had
just been powered up), it ends up in 'bright' mode in the base
startup menu, and I lose various settings such as the current object,
slew speeds, etc.
This will happen if the power drops below 12 volts for even a fraction of a
second. Most likely reason is a poor connection at the 12 volt plug on the
servo box. Spread the tines of the center pin on the mating socket so it makes
better contact with the 12 volt power connector.

Rolando


**************
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information, tips
and calculators.
(http://www.walletpop.com/?NCID=emlcntuswall00000001)


Re: my AP1200 points off into space

Geert Vandenbulcke <geert.vdbulcke@...>
 

Thanks Jeff, but in my setup the bolts are not accessible unless I remove
the telescope. Well, as I said not an issue for me for the time being!µ

Geert

_____

Van: ap-gto@... [mailto:ap-gto@...] Namens Jeff
Young
Verzonden: woensdag 1 oktober 2008 10:42
Aan: ap-gto@...
Onderwerp: RE: [ap-gto] my AP1200 points off into space



Geert --

I cut small notches in the shim stock around where the bolts go through, and
then I just loosen the two bolts slightly at the end that needs adjusting
and insert the shims while pressing up on the OTA. My payload is about 55
kg, so dismounting (alone) isn't an option.

A couple of push-pull screws would have a pretty small bearing surface for
20 - 55 kg, while a bunch of push-pull screws would risk deforming the rings
and/or plate if they weren't set evenly. I do imagine they'd work great on
smaller, lighter setups, though.

Cheers,
-- Jeff.

From: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
[mailto:ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com] On Behalf
Of Geert Vandenbulcke
Sent: Tuesday, September 30, 2008 7:43 AM
To: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com
Subject: RE: [ap-gto] my AP1200 points off into space

Well, simple in theory yes. But imagine at night having to take of a +20 kg
telescope + accessories to put shims under rings or dovetail saddle and then
remounting everything to check orthogonality and then probably start over
again a few times to remove or add extra shims, well this for sure is a good
workout to achieve very good GoTo's! So, I thought: would it be possible
to have some sort of adapter between dovetail saddle/mounting plate that
allows easier adjustment say with a set of push-pull screws or so, without
having to remove the telescope to add shims?

Best regards,

Geert Vandenbulcke
Belgium

_____

Van: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com>
com<mailto:ap-gto%40yahoogroups.com> [mailto:ap-gto@yahoogroups.
<mailto:ap-gto%40yahoogroups.com> com<mailto:ap-gto%40yahoogroups.com>]
Namens
chris1011@aol. <mailto:chris1011%40aol.com> com<mailto:chris1011%40aol.com>
Verzonden: dinsdag 30 september 2008 0:55
Aan: ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com>
com<mailto:ap-gto%40yahoogroups.com>
Onderwerp: Re: [ap-gto] my AP1200 points off into space

In a message dated 9/29/2008 4:49:43 PM Central Daylight Time,
mike@scopenews. <mailto:mike%40scopenews.com> com writes:

I get excellent pointing in either the E or W hemisphere, but after a
meridian switch I have to go out to the observatory and crawl around
on my knees re-centering a star and re-syncing it.
Try my meridian flip method to remove the non-orthogonality in your scope.
In
other words, fix the problem with a crosshair eyepiece and a few pieces of
shim stock under your scope rings. Why mess around with electronic fixes
when it
can be so simple to make your scope orthogonal?

Rolando

**************
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information, tips
and calculators.
(http://www.walletpo <http://www.walletpo
<http://www.walletpop.com/?NCID=emlcntuswall00000001>
p.com/?NCID=emlcntuswall00000001>
p.com/?NCID=emlcntuswall00000001)

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Re: my AP1200 points off into space

Jeff Young <jey@...>
 

Geert --

I cut small notches in the shim stock around where the bolts go through, and then I just loosen the two bolts slightly at the end that needs adjusting and insert the shims while pressing up on the OTA. My payload is about 55 kg, so dismounting (alone) isn't an option.

A couple of push-pull screws would have a pretty small bearing surface for 20 - 55 kg, while a bunch of push-pull screws would risk deforming the rings and/or plate if they weren't set evenly. I do imagine they'd work great on smaller, lighter setups, though.

Cheers,
-- Jeff.


From: ap-gto@... [mailto:ap-gto@...] On Behalf Of Geert Vandenbulcke
Sent: Tuesday, September 30, 2008 7:43 AM
To: ap-gto@...
Subject: RE: [ap-gto] my AP1200 points off into space


Well, simple in theory yes. But imagine at night having to take of a +20 kg
telescope + accessories to put shims under rings or dovetail saddle and then
remounting everything to check orthogonality and then probably start over
again a few times to remove or add extra shims, well this for sure is a good
workout to achieve very good GoTo's! So, I thought: would it be possible
to have some sort of adapter between dovetail saddle/mounting plate that
allows easier adjustment say with a set of push-pull screws or so, without
having to remove the telescope to add shims?

Best regards,

Geert Vandenbulcke
Belgium

_____

Van: ap-gto@...<mailto:ap-gto%40yahoogroups.com> [mailto:ap-gto@...<mailto:ap-gto%40yahoogroups.com>] Namens
chris1011@...<mailto:chris1011%40aol.com>
Verzonden: dinsdag 30 september 2008 0:55
Aan: ap-gto@...<mailto:ap-gto%40yahoogroups.com>
Onderwerp: Re: [ap-gto] my AP1200 points off into space

In a message dated 9/29/2008 4:49:43 PM Central Daylight Time,
mike@scopenews. <mailto:mike%40scopenews.com> com writes:

I get excellent pointing in either the E or W hemisphere, but after a
meridian switch I have to go out to the observatory and crawl around
on my knees re-centering a star and re-syncing it.
Try my meridian flip method to remove the non-orthogonality in your scope.
In
other words, fix the problem with a crosshair eyepiece and a few pieces of
shim stock under your scope rings. Why mess around with electronic fixes
when it
can be so simple to make your scope orthogonal?

Rolando

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Re: my AP1200 points off into space

Jeff Young <jey@...>
 

Steve --

I prefer brass shim stock, but I've also used steel without any rust issues (even in Ireland). I suspect that once sandwiched between the radius block (or ring) and the mounting plate they're just not getting enough exposure to air to rust. I did lightly coat them with oil before inserting them.

-- Jeff.


From: ap-gto@... [mailto:ap-gto@...] On Behalf Of Steve Reilly
Sent: Tuesday, September 30, 2008 12:47 AM
To: ap-gto@...
Subject: RE: [ap-gto] Re: my AP1200 points off into space


Speaking of which, what do you like to use for shim stock?

Steve

From: ap-gto@...<mailto:ap-gto%40yahoogroups.com> [mailto:ap-gto@...<mailto:ap-gto%40yahoogroups.com>] On Behalf Of
chris1011@...<mailto:chris1011%40aol.com>
Sent: Monday, September 29, 2008 7:39 PM
To: ap-gto@...<mailto:ap-gto%40yahoogroups.com>
Subject: Re: [ap-gto] Re: my AP1200 points off into space

In a message dated 9/29/2008 6:36:30 PM Central Daylight Time,
mike@...<mailto:mike%40scopenews.com> <mailto:mike%40scopenews.com> writes:

As for orthogonality, I'm actually impressed that I get within
(hmmm.... maybe) 20 arcmin of the CCD sensor when pointing with my
scope of about ~70 pounds and ~6 feet long
http://www.pbase.com/mclemens1969/image/96998645
The plates, rings, guider stuff, etc. I am sure has flex that no shims
would eliminate.
If you get good pointing, then you don't have much of a flex problem. Check
your orthogonality using a crosshair eyepiece, pointing to a star on the
meridian. Use meridian delay to point to this star on both sides and shim up
your
rings until you are dead nuts on. It's quite easy.

Rolando

**************
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information, tips
and calculators.
(http://www.walletpop.com/?NCID=emlcntuswall00000001)


Re: Need Help Slewing issues

Bill Bradford
 

Dean,

Where are you located? I am also at Okie-Tex.

We have two pink flamingos at our site. We are in the middle of the field and on its north one third.

Bill

----- Original Message -----
From: Dean Salman
To: ap-gto@...
Sent: Tuesday, September 30, 2008 1:37 PM
Subject: [ap-gto] Need Help Slewing issues


My friend got a new (used) AP 1200 goto mount

For some reason, when the mount is told to move from the east side to
the west side from TheSky6, it moves a few degrees and quits. It has
no problem moving west to east flip. The keypad works so it is an
issued with the serial ports or from the computer to the mount. I
tried both ports on the mount and also put the mount on a new charged
battery instead of the adaptor. I am going to change out the serial
cable but if that does not work them maybe Keith needs to change the
same chips I did on my mount that control the serial ports on the
mount. It also has the D chip so an upgrade to the E would be nice,
but I suspect that is not causing an issue. The work around is to get
up and watch the flip, if it fails, use the keypad to move the mount so
that the imaging can continue.

Dean (at Okie-Tex Star Party)


Hello from new member with a setup question

Mike Dodd
 

hello to the group. I expect to receive my (secondhand) AP1200 GTO
late next week, and I can barely wait. :-) Reading through the GTO
keypad manual, I ran across this statement on page 15:

"Your latitude and longitude must be entered using degrees: hours:
minutes format."

Hours?? Shouldn't that be degrees, minutes, and seconds? I've always
entered my longitude in TheSky and in other mounts I've owned using
DDD:MM:SS, and latitude using DD:MM:SS.

Thanks in advance to anyone who can clarify this for me.

Mike
-----

Mike Dodd
Montpelier, VA USA
http://astronomy.mdodd.com


Re: Need Help Slewing issues

chris provost <lineman_16735@...>
 

Hi John,
 
Nope no temp problem with my laptop yet:-)  I was just responding to Dean's issue.  I had completely forgotten that the same thing happened to me as well.  It was about 45°F here last night, and I've had no problems below zero.
 
Chris

--- On Tue, 9/30/08, John <john.lottes@...> wrote:

From: John <john.lottes@...>
Subject: [ap-gto] Re: Need Help Slewing issues
To: ap-gto@...
Date: Tuesday, September 30, 2008, 5:46 PM






Chris,
If you do have a laptop temp problem there are a couple of solutions
you can try.
My old Dimension doesn't like cold at all. I put a reptile pad on the
bottom. Not incredibly warm but just enough to keep it happy and it
self temp regulating. If I'm away from AC power then a put a hand
warmer pad on the bottom. They're good for about 4 hrs. Disposable or
you can get the reusable kind (more $$ to begin but cheaper in the
long run). Both work. Just try not to block the fan vent.

HTH John. ;-)

--- In ap-gto@yahoogroups. com, chris provost <lineman_16735@ ...> wrote:

I'll try it out next time Roland.  Thanks.
 
Chris



--- On Tue, 9/30/08, chris1011@.. . <chris1011@. ..> wrote:

From: chris1011@.. . <chris1011@. ..>
Subject: Re: [ap-gto] Re: Need Help Slewing issues
To: ap-gto@yahoogroups. com
Date: Tuesday, September 30, 2008, 4:52 PM






In a message dated 9/30/2008 3:49:49 PM Central Daylight Time,
lineman_16735@ yahoo.com writes:

I had never had this issue before 6.058 was installed. Could have
been a
fluke but this is thwe only thing that has changed in my system since
receiving the mount.
PortMon would tell you what's happening.

Rolando

************ **
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information,
tips
and calculators.
(http://www.walletpo p.com/?NCID= emlcntuswall0000 0001)

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




















Re: Need Help Slewing issues

John <john.lottes@...>
 

Chris,
If you do have a laptop temp problem there are a couple of solutions
you can try.
My old Dimension doesn't like cold at all. I put a reptile pad on the
bottom. Not incredibly warm but just enough to keep it happy and it
self temp regulating. If I'm away from AC power then a put a hand
warmer pad on the bottom. They're good for about 4 hrs. Disposable or
you can get the reusable kind (more $$ to begin but cheaper in the
long run). Both work. Just try not to block the fan vent.

HTH John. ;-)

--- In ap-gto@..., chris provost <lineman_16735@...> wrote:

I'll try it out next time Roland.  Thanks.
 
Chris



--- On Tue, 9/30/08, chris1011@... <chris1011@...> wrote:

From: chris1011@... <chris1011@...>
Subject: Re: [ap-gto] Re: Need Help Slewing issues
To: ap-gto@...
Date: Tuesday, September 30, 2008, 4:52 PM






In a message dated 9/30/2008 3:49:49 PM Central Daylight Time,
lineman_16735@ yahoo.com writes:

I had never had this issue before 6.058 was installed. Could have
been a
fluke but this is thwe only thing that has changed in my system since
receiving the mount.
PortMon would tell you what's happening.

Rolando

************ **
Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information,
tips
and calculators.
(http://www.walletpo p.com/?NCID= emlcntuswall0000 0001)

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


















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