Date   

Re: mechanical home capability

Bob Denny
 

Walt Cooney:
One advantage the Paramount has over the AP-1200 for true robotic
operation is
the mechanical home switches that allow the system to be sent to a known
position even after it gets lost for whatever reason.
It's a 2-edged sword. AFAIK (customer inputs to me) you MUST home a
Paramount whenever you cold-start it. On the other hand, you can
simply turn off the power to the AP with it pointing anywhere. As long
as the software (ASCOM driver, PulseGuide) does the "right" thing, it
will power up in place and know where it is. This is a major advantage.

That's not a substitute for a home sensing system as needed if the
mount "gets lost". But given the experiences of my customers who have
APs, the mount very rarely GETS lost (well as long as it's left alone
and manipulated via the HBX or computer).

-- Bob


Re: AP in Pro-Dome?

George <glabelle17@...>
 

--- In ap-gto@..., Bill Gardner <gardner.w@...> wrote:

You are right in that the slit will line up with the azimuth, but
DDWCP
allows for for entry of data relating to the offset from dome
centre and
height within the observatory for GEMs.
---------------------------------------
Hi Bill.

Does it account for meridian flips too? Actually it looks like
this is not an issue if you have DDW, since you can use software to
command the dome and mount independantly.





So far I
haven't been able to find anyone with the cheap IR "mechanical"
slave
setup that uses IR to slave the dome to a scope to comment on
that.

I don't think that you will find very many people using the IR
dome
tracking system, since IR will interfere with CCD imaging and most
people with domes are imaging.
----------------------------------------

Maybe that explains it! ;-) I didn't think it would get in the
way...




The dome doesn't leak, but it "sweats" and therefore I take all
of
the equipment out for the winter (I'm in rainy Oregon).
This winter I installed an old arm style desk lamp in my dome. I
installed a low wattage energy bulb and leave it on all the time
-----------------------------
Well, I tried heaters and fans (heater made it worse), until I
realized that what I really needed was venting. TI even recommended
cutting holes in the sides and putting in fans. I will probably do
this with muffin fans if I decide to stick with the dome.





You already have Dennis' comments on roll-offs.
-------------------------------

Yes, one reason I chose the dome in the first place was to
shield against wind and potential lights in my suburban area.




One last thing to let you know about, there is a whole Yahoo group
for
our domes:

http://groups.yahoo.com/group/home_dome_users/
---------------------------------

Been there. I posted there first. I did get a response from
Pierre in Belgium who has partly homebrewed his own automation
system. That can be found here:

http://users.skynet.be/dppobservatory

Thanks!
George


Re: AP in Pro-Dome?

George <glabelle17@...>
 

Hi Ajai! What do you mean by "slaving". To me slaving is when I move
the scope and the dome follows. This can be done with DW ($1300
w/motor), or DDW ($2000 w/motor) - but only accurately with fork
mounts. This is from TI's own documentation.

Which hardware do you have, DW or DDW?

It sounds like you have DDW and are actually sending commands to
both the mount and the dome?

Do you remote the shutter too? I was considering avoiding this as I
read this was problematic.

Do you have trouble with moisture inside?

Thanks,
George


--- In ap-gto@..., "Ajai Sehgal" <ajai@...> wrote:

Hi George,

I am just north of you in Woodinville WA. I have a C-14 on an
AP1200 in a
10' Pro Dome. The system is fully automated and the slaving works
fine. I
do not use the DDW software. I am using Bob Denny's ACP software
with Tim
Long's DDW ASCOM driver. I have no problem with dome slaving and I
almost
never go out to the dome.

Ajai

-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On
Behalf Of
George
Sent: Wednesday, March 01, 2006 11:44 AM
To: ap-gto@...
Subject: [ap-gto] AP in Pro-Dome?

I've got an AP-1200 in a 10' Pro-Dome. Recently I thought it might
be
time to automate it so I can do most of the work from inside the
house
(50' away). Looks like it could cost upwards of $2.5K to fully
automate. The DDW from TI will not exactly slave to an AP mount,
apparently because of the geometry differences between a Fork and
GE
mount, and only being able to get the Az from the mount. So far I
haven't been able to find anyone with the cheap IR "mechanical"
slave
setup that uses IR to slave the dome to a scope to comment on that.

Drawbacks of dome.
1. The dome doesn't leak, but it "sweats" and therefore I take all
of
the equipment out for the winter (I'm in rainy Oregon).
2. Inside the dome is disorienting and noises are "weird" because
of
the acoustics.

I got to thinking that maybe it's time to switch to a roll-off. I
wouldn't have to worry about slaving or controlling the dome
rotation
at all, and I might be able to leave the equipment in there
year 'round.

Comments?
Suggestions?
Thoughts?

Thanks!
George Aloha, Oregon






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see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links


Re: AP in Pro-Dome?

Bill Gardner <gardner.w@...>
 

Hi George,

I have an AP900 in a TI 10'Dome. I am also going through the process of automating the dome at the moment as well.

The DDW from TI will not exactly slave to an AP mount, apparently because of the geometry differences between a Fork and GE mount, and only being able to get the Az from the mount.
You are right in that the slit will line up with the azimuth, but DDWCP allows for for entry of data relating to the offset from dome centre and height within the observatory for GEMs.

So far I haven't been able to find anyone with the cheap IR "mechanical" slave setup that uses IR to slave the dome to a scope to comment on that.
I don't think that you will find very many people using the IR dome tracking system, since IR will interfere with CCD imaging and most people with domes are imaging.

The dome doesn't leak, but it "sweats" and therefore I take all of the equipment out for the winter (I'm in rainy Oregon).
This winter I installed an old arm style desk lamp in my dome. I installed a low wattage energy bulb and leave it on all the time I don't have the dome open. It has solved the problem of frost forming on things in the dome. Has also had the side benefit of drastically reducing ice buildup on the outside of the dome.

Inside the dome is disorienting and noises are "weird" because of the acoustics.
I agree that it becomes very disorienting, trying to find the door sometimes during an image run is a challenge. But fun.

Comments?
Suggestions?
Thoughts?
You already have Dennis' comments on roll-offs. Another thing to remember is that all (most?) of the remote observatories at NMSkies are TI domes, including Robert Gendler in a 15'. You already have the observatory, it will just take a little more to get it working better for you.

One last thing to let you know about, there is a whole Yahoo group for our domes:

http://groups.yahoo.com/group/home_dome_users/

Tschs,

Bill Gardner
______________________________________________

Pictor Observatory
http://www.pictorobservatory.ca


Re: M97

Bill Gardner <gardner.w@...>
 

sdheckenlively wrote:
> Can anyone else confirm the detail in the nebula?
The stars appear to show faint comatic tails.
This kind of shot is new to me and I would like to
learn more about how to distinguish the various
optical vs. mechanical vs. image processing issues.
Thanks for the comment Steve. Yes that is coma that you see in the shot of M97. The coma is in the colour layer of the image, which as I mentioned in the original post was from old data. I have been spending the last two weeks getting the AP/SCT system in line, in terms of improving my polar alignment for the longer focal length and collimating the scope, which has not been used for over a year.

Bill
______________________________________________

Pictor Observatory
http://www.pictorobservatory.ca


Re: AP in Pro-Dome?

Ajai Sehgal
 

Hi George,

I am just north of you in Woodinville WA. I have a C-14 on an AP1200 in a
10' Pro Dome. The system is fully automated and the slaving works fine. I
do not use the DDW software. I am using Bob Denny's ACP software with Tim
Long's DDW ASCOM driver. I have no problem with dome slaving and I almost
never go out to the dome.

Ajai

-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf Of
George
Sent: Wednesday, March 01, 2006 11:44 AM
To: ap-gto@...
Subject: [ap-gto] AP in Pro-Dome?

I've got an AP-1200 in a 10' Pro-Dome. Recently I thought it might be
time to automate it so I can do most of the work from inside the house
(50' away). Looks like it could cost upwards of $2.5K to fully
automate. The DDW from TI will not exactly slave to an AP mount,
apparently because of the geometry differences between a Fork and GE
mount, and only being able to get the Az from the mount. So far I
haven't been able to find anyone with the cheap IR "mechanical" slave
setup that uses IR to slave the dome to a scope to comment on that.

Drawbacks of dome.
1. The dome doesn't leak, but it "sweats" and therefore I take all of
the equipment out for the winter (I'm in rainy Oregon).
2. Inside the dome is disorienting and noises are "weird" because of
the acoustics.

I got to thinking that maybe it's time to switch to a roll-off. I
wouldn't have to worry about slaving or controlling the dome rotation
at all, and I might be able to leave the equipment in there
year 'round.

Comments?
Suggestions?
Thoughts?

Thanks!
George Aloha, Oregon






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see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links


Re: AP in Pro-Dome?

Dennis Persyk <dpersyk@...>
 

Hi George,

I also have a PD-10 with an AP-1200GGTO in it. Last year I was all
set to sell it and erect a roll off so I could put in a second pier
for visual observing. I even had buyer lined up. Then I did some
homework and decided against it.

I visited a rolloff observatory when there was a twelve knot wind.
The turbulence inside the observatory was astounding! The wind
rolls in and dips down with strong eddies and would be a problem for
imaging. I image in 25 knot winds with the PD-10 without any
problems.

I procured civil engineering documents on mitigating high wind
damage from the state of IL and decided there were no rolloff
designs that I had considered that would survive 75 mph wind gusts.
We have recorded such gusts several times in the past seven years.

The PD-10 is easy to keep operational with a snow fall of 12
inches. I don't know how I'd handle that with a rolloff.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL

New Images http://home.att.net/~dpersyk/new.htm

--- In ap-gto@..., "George" <glabelle17@...> wrote:

I've got an AP-1200 in a 10' Pro-Dome. Recently I thought it might
be time to automate it so I can do most of the work from inside the
house (50' away). Looks like it could cost upwards of $2.5K to fully
automate. The DDW from TI will not exactly slave to an AP mount,
apparently because of the geometry differences between a Fork and
GE mount, and only being able to get the Az from the mount. So far I
haven't been able to find anyone with the cheap IR "mechanical"
slave setup that uses IR to slave the dome to a scope to comment on
that.

Drawbacks of dome.
1. The dome doesn't leak, but it "sweats" and therefore I take all
of he equipment out for the winter (I'm in rainy Oregon).
2. Inside the dome is disorienting and noises are "weird" because
of the acoustics.

I got to thinking that maybe it's time to switch to a roll-off. I
wouldn't have to worry about slaving or controlling the dome
rotation at all, and I might be able to leave the equipment in there
year 'round.

Comments?
Suggestions?
Thoughts?

Thanks!
George Aloha, Oregon


Re: AP in Pro-Dome?

William R. Mattil <wrmattil@...>
 

George wrote:

I've got an AP-1200 in a 10' Pro-Dome. Recently I thought it might be time to automate it so I can do most of the work from inside the house (50' away). Looks like it could cost upwards of $2.5K to fully automate. The DDW from TI will not exactly slave to an AP mount, apparently because of the geometry differences between a Fork and GE mount, and only being able to get the Az from the mount.
George,

This statement doesn't seem to be accurate. There are quite a few AP mounts residing in Domes and they work quite well. So I would suggest that you contact Jerry at TI who can no doubt address any fears that you may have in this regard.



Drawbacks of dome.
1. The dome doesn't leak, but it "sweats" and therefore I take all of the equipment out for the winter (I'm in rainy Oregon).
Dehumidifier. Problem solved.

2. Inside the dome is disorienting and noises are "weird" because of the acoustics.
Yes. It's eerie when someone directly infront of you is peaking and you can hear hime better on the other side of the dome. :)

I got to thinking that maybe it's time to switch to a roll-off. I wouldn't have to worry about slaving or controlling the dome rotation at all, and I might be able to leave the equipment in there year 'round.
I'd be interested in the dome if it's in my price range :)

Regards

Bill



--

William R. Mattil : http://www.celestial-images.com


AP in Pro-Dome?

George <glabelle17@...>
 

I've got an AP-1200 in a 10' Pro-Dome. Recently I thought it might be
time to automate it so I can do most of the work from inside the house
(50' away). Looks like it could cost upwards of $2.5K to fully
automate. The DDW from TI will not exactly slave to an AP mount,
apparently because of the geometry differences between a Fork and GE
mount, and only being able to get the Az from the mount. So far I
haven't been able to find anyone with the cheap IR "mechanical" slave
setup that uses IR to slave the dome to a scope to comment on that.

Drawbacks of dome.
1. The dome doesn't leak, but it "sweats" and therefore I take all of
the equipment out for the winter (I'm in rainy Oregon).
2. Inside the dome is disorienting and noises are "weird" because of
the acoustics.

I got to thinking that maybe it's time to switch to a roll-off. I
wouldn't have to worry about slaving or controlling the dome rotation
at all, and I might be able to leave the equipment in there
year 'round.

Comments?
Suggestions?
Thoughts?

Thanks!
George Aloha, Oregon


Re: AP1200 tracking

Adrian Catterall <adrian@...>
 

Mike..

I would agree, only I would never slew at 2x sidereal for around 30
seconds, I would much prefer to slew at a faster speed. Besides, I
rarely touch the NSEW buttons, apart from a little tweak to center an
object for imaging and this must of course happened at my last imaging
session in January. Perhaps there is a knowledgeable beat in my back
garden :-)

I wont play with PEMPro until there is a clear sky and full moon, hate
to waste dark clear skies!

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com

-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of aaeejmh
Sent: 01 March 2006 02:28
To: ap-gto@...
Subject: [ap-gto] Re: AP1200 tracking

Hi Adrian,

The symptoms you describe do not sound like the PEM waveform merely got
out of sync
with the actual worm position as this would not explain the stopped or
2x tracking.
"Clobberring" a few data points on your curve would not explain it
either as each point
represents much less than a (time) second. If PEC record got turned on
without you
realizing it, the symptoms are explainable. Use of the N-S-E-W buttons
to manually
navigate without realizing the mount is trying to record a PEM waveform
can result in the
behavior you describe when the resulting rogue waveform is later played
back.

If you are unable to re-record and properly play back a new PEM
waveform, then there is
something more going on.

-Mike Hanson


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

Perhaps double-check the North/South hemisphere switch

Dave

--- In ap-gto@..., "Adrian Catterall" <adrian@> wrote:

I appreciate its not in the handset, but thought that the re-
booting of
the handset could send a signal to the control box. I know this is
unlikely as that is what we do when powering down the mount, but I
am at
a loss to explain the alteration to PE.

Any way looks like I need to re-do PEMPro. It was great having a
total
PE of 0.5 arc secs!

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On
Behalf
Of chris1011@
Sent: 28 February 2006 22:40
To: ap-gto@...
Subject: Re: [ap-gto] AP1200 tracking

In a message dated 2/28/2006 4:20:10 PM Central Standard Time,
adrian@ writes:


Its odd that PEMPro has worked flawlessly for over a year and all
of a
sudden it is playing back a huge PE of probably 10 - 20 arc
minutes
and
that's without any know intervention on my behalf. Have you any
ideas
as
to why this might have happened? I do occasionally get the handset
re-setting problem that is due to faulty connections within the
handset
(I did clean them about 2 years ago) and wonder if this could in
any
way
contribute?
PEM is not in the handset. If anything is amiss, it would be in the
main

servo box. I will check with Mike to see if there is something in
the
software
that would allow the PEM to get out of whack over time. It would
most
likely be
in the PIC chip where the main software program resides.

Roland Christen






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see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links





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Yahoo! Groups Links


Re: AP1200 tracking

Adrian Catterall <adrian@...>
 

Opps, sorry, learn something every day!

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com

-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of chris1011@...
Sent: 28 February 2006 23:26
To: ap-gto@...
Subject: Re: [ap-gto] AP1200 tracking

In a message dated 2/28/2006 5:00:59 PM Central Standard Time,
josephdunning@... writes:


If I turn the worm by hand as when adjusting the gears does the servo
box lose its worm index?
Yes.

Roland Christen






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Yahoo! Groups Links


Question for Roland re: SCT collimation requirements

sdheckenlively
 

Hi Roland,

Someone several years ago, I believe Thierry Legault (sp?)
wrote that he believed that the collimation requirements
for an SCT were that of the f2 primary, not the final system,
e.g. f10. F2, mechanically, would require something in the
ten-thousands of an inch range. F10 would be much looser.

Can you tell us what the requirements are?

Thanks,
Steve
PS I sold my Televue Genesis SDF on ebay yesterday and
referenced you regarding the vignetting info you gave me
a couple years ago aboutthe Petzval design, and my own
measurements using a Canon 300D DSLR. Thanks for that too :-)


Re: M97

sdheckenlively
 

Nice picture. SCT-on-AP came up the other day in an email
with Bob Berta.

Can anyone else confirm the detail in the nebula?
The stars appear to show faint comatic tails.
This kind of shot is new to me and I would like to
learn more about how to distinguish the various
optical vs. mechanical vs. image processing issues.

Btw, I want to go post a question for Roland regarding
SCT collimation.

Well done, Bill.

Steve


--- In ap-gto@..., Bill Gardner <gardner.w@...> wrote:

Thank you AP. The quality of my AP900 continues to amaze me. I
have
been using the less than ideal clear skies this past week to
refine my
alignment and optics and ran a test shot of the Owl last night.
The
results can be seen at:

http://www.pictorobservatory.ca/m97.oldcolour.jpg

I never would of thought that my old SCT would have an imaging
platform
stable enough to produce images like this and be able to approach
5
minute unguided shots.

The image was taken with a 10"SCT f/6.3 and a 6.3FR. The image
was
meant to be a 120:40:40:60 but clouds rolled in before I could
finish
the blue, so I recycled old colour until I can finish it off.

Thanks Roland and the rest of AP.

Bill Gardner
______________________________________________

Pictor Observatory
http://www.pictorobservatory.ca


Re: Tripod for AP900

Robert Edwards <robae@...>
 

Hi Mal,

Thank you for the reply and photo, that helped.

Robert


--- In ap-gto@..., "Mal Speer" <mal@...> wrote:


I used an AP 900 mount on a Giant Meade Tripod it works fine with
my C
14. The mount does hit the tripod leg at low lat. like at the WSP,
so I
put the North end between the legs and that cured the problem. I
just
added a photo album (Mal's Photos) with a picture of the setup. I
drilled and tapped four 1/4-20 holes in the tripod top to match the
holes in the AP Pier Plate.
Mal

--- In ap-gto@..., "Robert Edwards" <robae@> wrote:

Hi to all,

Is anyone using the Meade giant field from the LX200 12" or 14"
for
the AP900,and if so, how do you like it.

Robert
Paradise,CA.


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


Follow-up questions on Mach1GTO capacity

elraeburn <eraeburn@...>
 

Dear Roland,

In recent posts you have mentioned that the stated 45lb capacity of
the Mach1GTO is conservative, but also that you would not be
comfortable imaging with this mount with an AP 10" Mak-Cass, due to
wind (apologies for any inaccurate paraphrasing).

My questions are:

(1) Would you have similar reservations about the increased "sail"
effect of an 80mm f/6 triplet (7.5 lbs) piggybacked on an AP130 f/6,
on this mount? (I assume that would be an emphatic "No".)

(2) In an environment in which wind is NOT a factor, would you have
any other reservations about imaging with the Mach1/AP10MC combination?

Thank you,
-Eric


STATUS protocol commands requested

Yves Laroche
 

Hi Roland,

I have some humble request that can help software programmers a lot when designing GTO drivers or applications. Sometime it might be useful to know if PEM is ON or OFF, which tracking rate is in use, does the mount is really parked and more. In my opinion, these STATUS protocol commands will permit the software programmer to get a better control of the mount without having to wrote too complex code. As a second advantage, knowing some kinds of status may help others in understanding special behavior in particular. As an example, if the PEM was set to ON via the keypad just to test something and the user forgot to change it back, it might be a good working solution if the driver can set it back to its original setting (servo controller). Does the mount is really parked or motors have stopped due to power failure or voltage dropped? The driver may think that the mount is parked because there is no movement in Alt-Az but that doesn't mean that the scope has reached its parked position. In this condition, the driver will permit other software to close the roof but...against the telescope...It can be costly.

Would you ask Mike if it can be easy for him to add such commands in the GTOCP2 and GTOCP3? I already have both but think it could be better for others if you will upgrade both servo controllers firmware.

Thanks in advance,
Yves


Re: Tripod for AP900

Mal Speer <mal@...>
 

I used an AP 900 mount on a Giant Meade Tripod it works fine with my C
14. The mount does hit the tripod leg at low lat. like at the WSP, so I
put the North end between the legs and that cured the problem. I just
added a photo album (Mal's Photos) with a picture of the setup. I
drilled and tapped four 1/4-20 holes in the tripod top to match the
holes in the AP Pier Plate.
Mal

--- In ap-gto@..., "Robert Edwards" <robae@...> wrote:

Hi to all,

Is anyone using the Meade giant field from the LX200 12" or 14" for
the AP900,and if so, how do you like it.

Robert
Paradise,CA.


Re: AP1200 tracking

aaeejmh
 

Hi Adrian,

The symptoms you describe do not sound like the PEM waveform merely got out of sync
with the actual worm position as this would not explain the stopped or 2x tracking.
"Clobberring" a few data points on your curve would not explain it either as each point
represents much less than a (time) second. If PEC record got turned on without you
realizing it, the symptoms are explainable. Use of the N-S-E-W buttons to manually
navigate without realizing the mount is trying to record a PEM waveform can result in the
behavior you describe when the resulting rogue waveform is later played back.

If you are unable to re-record and properly play back a new PEM waveform, then there is
something more going on.

-Mike Hanson

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

Perhaps double-check the North/South hemisphere switch

Dave

--- In ap-gto@..., "Adrian Catterall" <adrian@> wrote:

I appreciate its not in the handset, but thought that the re-
booting of
the handset could send a signal to the control box. I know this is
unlikely as that is what we do when powering down the mount, but I
am at
a loss to explain the alteration to PE.

Any way looks like I need to re-do PEMPro. It was great having a
total
PE of 0.5 arc secs!

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On
Behalf
Of chris1011@
Sent: 28 February 2006 22:40
To: ap-gto@...
Subject: Re: [ap-gto] AP1200 tracking

In a message dated 2/28/2006 4:20:10 PM Central Standard Time,
adrian@ writes:


Its odd that PEMPro has worked flawlessly for over a year and all
of a
sudden it is playing back a huge PE of probably 10 - 20 arc
minutes
and
that's without any know intervention on my behalf. Have you any
ideas
as
to why this might have happened? I do occasionally get the handset
re-setting problem that is due to faulty connections within the
handset
(I did clean them about 2 years ago) and wonder if this could in
any
way
contribute?
PEM is not in the handset. If anything is amiss, it would be in the
main

servo box. I will check with Mike to see if there is something in
the
software
that would allow the PEM to get out of whack over time. It would
most
likely be
in the PIC chip where the main software program resides.

Roland Christen


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



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


Re: AP1200 tracking

mogulskier_groups
 

Perhaps double-check the North/South hemisphere switch

Dave

--- In ap-gto@..., "Adrian Catterall" <adrian@...> wrote:

I appreciate its not in the handset, but thought that the re-
booting of
the handset could send a signal to the control box. I know this is
unlikely as that is what we do when powering down the mount, but I
am at
a loss to explain the alteration to PE.

Any way looks like I need to re-do PEMPro. It was great having a
total
PE of 0.5 arc secs!

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On
Behalf
Of chris1011@...
Sent: 28 February 2006 22:40
To: ap-gto@...
Subject: Re: [ap-gto] AP1200 tracking

In a message dated 2/28/2006 4:20:10 PM Central Standard Time,
adrian@... writes:


Its odd that PEMPro has worked flawlessly for over a year and all
of a
sudden it is playing back a huge PE of probably 10 - 20 arc
minutes
and
that's without any know intervention on my behalf. Have you any
ideas
as
to why this might have happened? I do occasionally get the handset
re-setting problem that is due to faulty connections within the
handset
(I did clean them about 2 years ago) and wonder if this could in
any
way
contribute?
PEM is not in the handset. If anything is amiss, it would be in the
main

servo box. I will check with Mike to see if there is something in
the
software
that would allow the PEM to get out of whack over time. It would
most
likely be
in the PIC chip where the main software program resides.

Roland Christen


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



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Re: AP1200 tracking

Adrian Catterall <adrian@...>
 

No, so long as the worm remains engaged with the gear and motor.

Adrian Catterall
Amateur Astronomer
Herts UK
http://www.acatterall.com

-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of Joseph Dunning
Sent: 28 February 2006 22:59
To: ap-gto@...
Subject: RE: [ap-gto] AP1200 tracking

If I turn the worm by hand as when adjusting the gears does the servo
box lose its worm index?

Joseph Dunning

http://home.bellsouth.net/p/PWP-josephdunningastronomy



-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of
chris1011@...
Sent: Tuesday, February 28, 2006 5:40 PM
To: ap-gto@...
Subject: Re: [ap-gto] AP1200 tracking

In a message dated 2/28/2006 4:20:10 PM Central Standard Time,
adrian@... writes:


Its odd that PEMPro has worked flawlessly for over a year and all of
a
sudden it is playing back a huge PE of probably 10 - 20 arc minutes
and
that's without any know intervention on my behalf. Have you any
ideas as
to why this might have happened? I do occasionally get the handset
re-setting problem that is due to faulty connections within the
handset
(I did clean them about 2 years ago) and wonder if this could in any
way
contribute?
PEM is not in the handset. If anything is amiss, it would be in the
main
servo box. I will check with Mike to see if there is something in the
software
that would allow the PEM to get out of whack over time. It would most
likely be
in the PIC chip where the main software program resides.

Roland Christen






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








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