Date   

Re: Counterweight needs

Rich N <rnapo@...>
 

Hi Alan,

After spending the bucks for an AP 1200GTO why not buy
the weights from AP? They are very nicely made.

I use two 18 lbs AP weights on my AP 1200 GTO with my
AP 180EDT (@ 35 lbs) plus an extra set of AP rings for the 180
and an AP Stowaway. The shaft is the one that came with
the 1200GTO. I believe it's 19.5 inches.

Rich

Hey all,

The 1200 has been ordered from AP, and the 12" LX200R OTA also (Company 7). Both should
arrive sometime next month.

Most other items i plan to buy used or fabricate locally. The CWs can be made by a fellow
local astronomer and I wonder if anyone can give a reasonable guesstimate on how much
I'll need. That OTA is 37 pounds, I'll guide off axis with only a 35mm camera body and an
ST-4 to add to the load. I am also considering a tandem arrangement, or piggyback
situation for the FS-102. Will 60 pounds (3X20) of weights cover this?

Thanks,
Alan

Astrohotography: http://www.pbase.com/avoetsch12952


Counterweight needs

Alan Voetsch <alanv12952@...>
 

Hey all,

The 1200 has been ordered from AP, and the 12" LX200R OTA also (Company 7). Both should
arrive sometime next month.

Most other items i plan to buy used or fabricate locally. The CWs can be made by a fellow
local astronomer and I wonder if anyone can give a reasonable guesstimate on how much
I'll need. That OTA is 37 pounds, I'll guide off axis with only a 35mm camera body and an
ST-4 to add to the load. I am also considering a tandem arrangement, or piggyback
situation for the FS-102. Will 60 pounds (3X20) of weights cover this?

Thanks,
Alan

Astrohotography: http://www.pbase.com/avoetsch12952


Re: Lookin fer a comprehensive deep sky atlas

Louis Mamakos
 

I really like SkyTools for observation planning and chart rendering. Can also do scope control and integrate various photographic surveys on the chart if you like.

http://www.skyhound.com/skytools.html

Louis Mamakos

On Sep 15, 2007, at 11:20 AM, Chuck Faranda wrote:

http://www.saguaroastro.org/content/downloads.htm may help.

Regards,
Chuck Faranda
http://ccdastro.net

----- Original Message -----
From: Bruce Karbal
To: ap-gto@...
Sent: Saturday, September 15, 2007 11:09 AM
Subject: [ap-gto] Lookin fer a comprehensive deep sky atlas


I'd like to find a comprehensive deep sky atlas and am hoping for some
recomendations.

My preferance is for electronic media ( CD er DVD )
Hoping it would have a format similar to field guide 2000......
object name/constellation/size/brightness/description

Containing NGC, IC, SH, Lynnds,Trumpler, Messier, DW objects

Thanx,

Bruce




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Re: Lookin fer a comprehensive deep sky atlas

Chuck Faranda <mail_lists2@...>
 

----- Original Message -----
From: Bruce Karbal To: ap-gto@... Sent: Saturday, September 15, 2007 11:09 AM
Subject: [ap-gto] Lookin fer a comprehensive deep sky atlas


I'd like to find a comprehensive deep sky atlas and am hoping for some recomendations.

My preferance is for electronic media ( CD er DVD )
Hoping it would have a format similar to field guide 2000......
object name/constellation/size/brightness/description

Containing NGC, IC, SH, Lynnds,Trumpler, Messier, DW objects

Thanx,

Bruce


Lookin fer a comprehensive deep sky atlas

Bruce Karbal <Skyloverz@...>
 

I'd like to find a comprehensive deep sky atlas and am hoping for some
recomendations.

My preferance is for electronic media ( CD er DVD )
Hoping it would have a format similar to field guide 2000......
object name/constellation/size/brightness/description

Containing NGC, IC, SH, Lynnds,Trumpler, Messier, DW objects

Thanx,

Bruce


Re: Using TheSky6 to control my AP900GTO CP2

Stuart Heggie <stuart.j.heggie@...>
 

Hey everyone - thanks for the fantastic response to my query! I got a LOT of good insight and will experiment with the suggestions next clear night. Naturally it is raining now that I have some direction from the experts. Sigh.

Stuart

----- Original Message -----
From: Scott Hammonds
To: ap-gto@...
Sent: Friday, September 14, 2007 12:14 PM
Subject: RE: [ap-gto] Using TheSky6 to control my AP900GTO CP2


Stuart,

I am using The Sky 6 in a remotely controlled observatory to control my
AP1200GTO/AP160. There are definitely issues with parking. Chris Hetlage and
I are both in the same observatory and he is using an AP130/AP900GTO, we had
to manually set a park position using a level. We both put the tube level
and the counter weight shaft slightly tilted down, then connected the mount
in The Sky and did a set park position. Slew it to a star and sync in The
Sky using the motion controls in The Sky, after that we had no problems.
Every time I am on the chip of the ST10XME when I slew on startup. It's not
always a perfect slew, but I believe that is due to 2 problems, orthogonal
issues and computer clock being slightly off.

Hope that helps,

Scott

From: ap-gto@... [mailto:ap-gto@...] On Behalf Of
chris1011@...
Sent: Friday, September 14, 2007 11:26 AM
To: ap-gto@...
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2

In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... <mailto:stuart.j.heggie%40sympatico.ca>
writes:

> Is it possible I'm messing up the initialization of the mount with TheSky6

> and it doesn't believe it is starting in Park 1?
>

Yes, it's quite possible. For one thing "The Sky6" does not send the correct

time to the mount in the summer during daylight savings time. Therefore RA
is
off by 1 hour or 15 degrees. There are numerous other bugs in that program
that can cause problems if you use it as your main operation source. I
recommend
using Pulse Guide if you want to start and park your mount via your computer

instead of the keypad.

Roland Christen

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


Re: Using TheSky6 to control my AP900GTO CP2

Jim Janusz <jjanusz@...>
 

Yeah, but not when I'm awake. LOL

----- Original Message -----
From: "Scott Hammonds" <shammo@...>
To: <ap-gto@...>
Sent: Friday, September 14, 2007 5:17 PM
Subject: RE: [ap-gto] Re: Using TheSky6 to control my AP900GTO CP2


I'm not surprised by that Jim, I've seen you drive!!!!!!


Re: Using TheSky6 to control my AP900GTO CP2

Scott Hammonds <shammo@...>
 

I'm not surprised by that Jim, I've seen you drive!!!!!!



From: ap-gto@... [mailto:ap-gto@...] On Behalf Of
Jim Janusz
Sent: Friday, September 14, 2007 2:03 PM
To: ap-gto@...
Subject: Re: [ap-gto] Re: Using TheSky6 to control my AP900GTO CP2



My friend David Churchill has the same mount and both are the latest
versions. He parks perfectly and I don't. Go figure. (G)

Jim

----- Original Message -----
From: "Dean Salman" <cluster@... <mailto:cluster%40ccdimages.com>
To: <ap-gto@... <mailto:ap-gto%40yahoogroups.com> >
Sent: Friday, September 14, 2007 10:37 AM
Subject: [ap-gto] Re: Using TheSky6 to control my AP900GTO CP2

Interesting, I never have issues parking with the Sky6 or CCDC, but I
always Sync in the east. When I sync in the west Park 1 works ok but
the tube ends up on the east side. But I only have to sync once in
the east and I am good for the night.

I did update my ASCom drivers with the 2 listed, one was for the Sky6
which I don't think I needed and the other was an AP update

http://www.ascom-standards.org/downloads.html

I also upgraded my D chip to the E1 chip which fixed an issue with
the Keypad and the mount running away on me.

BTW, PulseGuide is working great and I am using 2 cables now. I had
a bad UART chip which I replaced and that fixed the commucation
problems I had using 2 serial cables.

Dean

--- In ap-gto@... <mailto:ap-gto%40yahoogroups.com> , "Jim
Janusz" <jjanusz@...> wrote:

I have found a similar situation with the 1200 in my remote
observatory. I
never use DST so my computer is set to standard time. I never use
the hand
controller, it's not even connected. The time in the servo is set
to
computer time by Pulseguide so they match. I initialize the mount
with
Pulseguide, and then I park with Pulseguide and it's perfectly at
Park 3. I
then restart the mount with Pulseguide, disconnect Pulseguide,
connect The
Sky, set park in The Sky, slew to an object which is centered
perfectly,
park the mount with The Sky and it parks about an hour off in RA.
Nothing I
have done so far has fixed this.

So, I have given up worrying about it. (G) I just unpark with
Pulseguide
using unpark from last park position. After that I use The Sky and
CCDCommander to control the mount. I have also stopped using synch
in CCDC
and only use offset when I plate solve. I suspect that synching
after a
mount flip was causing east west problems.

The Sky moves the mount perfectly but for some reason it can't park
it
correctly. But it really doesn't matter......

Jim


----- Original Message -----
From: <chris1011@...>
To: <ap-gto@... <mailto:ap-gto%40yahoogroups.com> >
Sent: Friday, September 14, 2007 8:25 AM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... writes:


Is it possible I'm messing up the initialization of the mount
with
TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send
the
correct
time to the mount in the summer during daylight savings time.
Therefore RA
is
off by 1 hour or 15 degrees. There are numerous other bugs in
that program
that can cause problems if you use it as your main operation
source. I
recommend
using Pulse Guide if you want to start and park your mount via
your
computer
instead of the keypad.

Roland Christen


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






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




Re: Using TheSky6 to control my AP900GTO CP2

Jim Janusz <jjanusz@...>
 

My friend David Churchill has the same mount and both are the latest versions. He parks perfectly and I don't. Go figure. (G)

Jim

----- Original Message -----
From: "Dean Salman" <cluster@...>
To: <ap-gto@...>
Sent: Friday, September 14, 2007 10:37 AM
Subject: [ap-gto] Re: Using TheSky6 to control my AP900GTO CP2


Interesting, I never have issues parking with the Sky6 or CCDC, but I
always Sync in the east. When I sync in the west Park 1 works ok but
the tube ends up on the east side. But I only have to sync once in
the east and I am good for the night.

I did update my ASCom drivers with the 2 listed, one was for the Sky6
which I don't think I needed and the other was an AP update

http://www.ascom-standards.org/downloads.html

I also upgraded my D chip to the E1 chip which fixed an issue with
the Keypad and the mount running away on me.

BTW, PulseGuide is working great and I am using 2 cables now. I had
a bad UART chip which I replaced and that fixed the commucation
problems I had using 2 serial cables.

Dean

--- In ap-gto@..., "Jim Janusz" <jjanusz@...> wrote:

I have found a similar situation with the 1200 in my remote
observatory. I
never use DST so my computer is set to standard time. I never use
the hand
controller, it's not even connected. The time in the servo is set
to
computer time by Pulseguide so they match. I initialize the mount
with
Pulseguide, and then I park with Pulseguide and it's perfectly at
Park 3. I
then restart the mount with Pulseguide, disconnect Pulseguide,
connect The
Sky, set park in The Sky, slew to an object which is centered
perfectly,
park the mount with The Sky and it parks about an hour off in RA.
Nothing I
have done so far has fixed this.

So, I have given up worrying about it. (G) I just unpark with
Pulseguide
using unpark from last park position. After that I use The Sky and
CCDCommander to control the mount. I have also stopped using synch
in CCDC
and only use offset when I plate solve. I suspect that synching
after a
mount flip was causing east west problems.

The Sky moves the mount perfectly but for some reason it can't park
it
correctly. But it really doesn't matter......

Jim


----- Original Message -----
From: <chris1011@...>
To: <ap-gto@...>
Sent: Friday, September 14, 2007 8:25 AM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... writes:


Is it possible I'm messing up the initialization of the mount
with
TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send
the
correct
time to the mount in the summer during daylight savings time.
Therefore RA
is
off by 1 hour or 15 degrees. There are numerous other bugs in
that program
that can cause problems if you use it as your main operation
source. I
recommend
using Pulse Guide if you want to start and park your mount via
your
computer
instead of the keypad.

Roland Christen


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





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




Re: Using TheSky6 to control my AP900GTO CP2

Dean Salman <cluster@...>
 

Interesting, I never have issues parking with the Sky6 or CCDC, but I
always Sync in the east. When I sync in the west Park 1 works ok but
the tube ends up on the east side. But I only have to sync once in
the east and I am good for the night.

I did update my ASCom drivers with the 2 listed, one was for the Sky6
which I don't think I needed and the other was an AP update

http://www.ascom-standards.org/downloads.html

I also upgraded my D chip to the E1 chip which fixed an issue with
the Keypad and the mount running away on me.

BTW, PulseGuide is working great and I am using 2 cables now. I had
a bad UART chip which I replaced and that fixed the commucation
problems I had using 2 serial cables.

Dean

--- In ap-gto@..., "Jim Janusz" <jjanusz@...> wrote:

I have found a similar situation with the 1200 in my remote
observatory. I
never use DST so my computer is set to standard time. I never use
the hand
controller, it's not even connected. The time in the servo is set
to
computer time by Pulseguide so they match. I initialize the mount
with
Pulseguide, and then I park with Pulseguide and it's perfectly at
Park 3. I
then restart the mount with Pulseguide, disconnect Pulseguide,
connect The
Sky, set park in The Sky, slew to an object which is centered
perfectly,
park the mount with The Sky and it parks about an hour off in RA.
Nothing I
have done so far has fixed this.

So, I have given up worrying about it. (G) I just unpark with
Pulseguide
using unpark from last park position. After that I use The Sky and
CCDCommander to control the mount. I have also stopped using synch
in CCDC
and only use offset when I plate solve. I suspect that synching
after a
mount flip was causing east west problems.

The Sky moves the mount perfectly but for some reason it can't park
it
correctly. But it really doesn't matter......

Jim


----- Original Message -----
From: <chris1011@...>
To: <ap-gto@...>
Sent: Friday, September 14, 2007 8:25 AM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... writes:


Is it possible I'm messing up the initialization of the mount
with
TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send
the
correct
time to the mount in the summer during daylight savings time.
Therefore RA
is
off by 1 hour or 15 degrees. There are numerous other bugs in
that program
that can cause problems if you use it as your main operation
source. I
recommend
using Pulse Guide if you want to start and park your mount via
your
computer
instead of the keypad.

Roland Christen


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






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




Re: Using TheSky6 to control my AP900GTO CP2

Jim Janusz <jjanusz@...>
 

I have found a similar situation with the 1200 in my remote observatory. I never use DST so my computer is set to standard time. I never use the hand controller, it's not even connected. The time in the servo is set to computer time by Pulseguide so they match. I initialize the mount with Pulseguide, and then I park with Pulseguide and it's perfectly at Park 3. I then restart the mount with Pulseguide, disconnect Pulseguide, connect The Sky, set park in The Sky, slew to an object which is centered perfectly, park the mount with The Sky and it parks about an hour off in RA. Nothing I have done so far has fixed this.

So, I have given up worrying about it. (G) I just unpark with Pulseguide using unpark from last park position. After that I use The Sky and CCDCommander to control the mount. I have also stopped using synch in CCDC and only use offset when I plate solve. I suspect that synching after a mount flip was causing east west problems.

The Sky moves the mount perfectly but for some reason it can't park it correctly. But it really doesn't matter......

Jim

----- Original Message -----
From: <chris1011@...>
To: <ap-gto@...>
Sent: Friday, September 14, 2007 8:25 AM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... writes:


Is it possible I'm messing up the initialization of the mount with TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send the correct
time to the mount in the summer during daylight savings time. Therefore RA is
off by 1 hour or 15 degrees. There are numerous other bugs in that program
that can cause problems if you use it as your main operation source. I recommend
using Pulse Guide if you want to start and park your mount via your computer
instead of the keypad.

Roland Christen


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





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




Re: Using TheSky6 to control my AP900GTO CP2

Behyar Bakhshandeh
 

I am a new AP user and been trying to figure this one out also. I
use PulseGuide and TheSky and don't even have the keypad connected.
My mount behaved exactly as you described. Reading Roland's
response last night I think I see what I have been doing wrong.

Every night I have been starting the session by manually putting the
mount in position Park3 and using PulseGuide to `start from Park3'
but at the end of the session I was simply disconnecting and turning
the mount off without parking first (bad habit from my old mount.)
Last night I did a Park to position 3 (in PulseGuide) before
powering down and went through a restart for a test. My first slew
in TheSky resulted with my target star on the chip where normally it
would be at the edge of my finderscope.

Behyar
www.deepskyobjects.com

--- In ap-gto@..., "Stuart Heggie" <stuart.j.heggie@...>
wrote:

Hi all - I'm trying to get into the 21st century (a little late).
I am using TheSky6 for mount control and it is simply great. The
only thing that is odd is that when I establish my connection to the
mount and slew to my first target, it is always off by a lot in RA
(a tiny bit in dec). I pick a bright target and use the hand
controller to put it on the right object and then sync in TheSky6.
From there everything works like a charm until I park and of course,
it parks off by what I'm guessing is the exact amount by which I
moved it at the start of the session.

I have fiddled with location and time with no success. I have the
correct long/lat and local time. I've tried disabling daylight
saving, lying about my timezone offset, and that doesn't change the
behaviour at all (which I don't think is surprising since probably
the mount is using my long/lat and local time only).

Help?

Stuart

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


Re: Using TheSky6 to control my AP900GTO CP2

Scott Hammonds <shammo@...>
 

Stuart,

I am using The Sky 6 in a remotely controlled observatory to control my
AP1200GTO/AP160. There are definitely issues with parking. Chris Hetlage and
I are both in the same observatory and he is using an AP130/AP900GTO, we had
to manually set a park position using a level. We both put the tube level
and the counter weight shaft slightly tilted down, then connected the mount
in The Sky and did a set park position. Slew it to a star and sync in The
Sky using the motion controls in The Sky, after that we had no problems.
Every time I am on the chip of the ST10XME when I slew on startup. It's not
always a perfect slew, but I believe that is due to 2 problems, orthogonal
issues and computer clock being slightly off.



Hope that helps,

Scott



From: ap-gto@... [mailto:ap-gto@...] On Behalf Of
chris1011@...
Sent: Friday, September 14, 2007 11:26 AM
To: ap-gto@...
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2



In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... <mailto:stuart.j.heggie%40sympatico.ca>
writes:

Is it possible I'm messing up the initialization of the mount with TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send the correct

time to the mount in the summer during daylight savings time. Therefore RA
is
off by 1 hour or 15 degrees. There are numerous other bugs in that program
that can cause problems if you use it as your main operation source. I
recommend
using Pulse Guide if you want to start and park your mount via your computer

instead of the keypad.

Roland Christen

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


Re: Using TheSky6 to control my AP900GTO CP2

Roland Christen
 

In a message dated 9/14/2007 2:40:06 PM Central Daylight Time,
behyar@... writes:


Every night I have been starting the session by manually putting the
mount in position Park3 and using PulseGuide to `start from Park3'
but at the end of the session I was simply disconnecting and turning
the mount off without parking first (bad habit from my old mount.)
You can certainly leave the mount in any arbitrary position when you are
finished for the night. Just do not "start from Park3" but simply "start from
Park", and you will be just as accurate. The mount always knows where it is, but
if you tell it that you wish to start from another position (i.e. Park3) then
you must physically move it there before you begin the session. For those who
take the entire setup down each night, this is the correct way to do things.
For those who are permanently set up, then you simply resume from Park - this
will work no matter where you parked, even if you left the mount in Park3 (or
Park1,2).

I hope this is clear. We gave you so many options to work with because
everyone has their own way to set up, and there will always be a right and proper
way for you to startup no matter how your setup is configured (permanent, or set
up fresh each time, or with the keypad, or with the computer, or both, or
neither ....).

Roland Christen


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


Re: Using TheSky6 to control my AP900GTO CP2

Dean Salman <cluster@...>
 

Hi Stuart,

This is what I do (not sure if it is right but it works) I use the
keypad to and park the mount to Park 1. Sometimes the mount will go
into another position than Park 1, but just let it. Once the slewing
is done, I move by hand the mount in park 1 using a level on both
axis. Then I power off the mount and start it again (I have auto
start turned on) Now I can take the sky and connect, slew to an
object, and pick Park 1 menu from the Sky6 which is does nicely.
Once that is all done. I test it in a final test but turning on the
mount, moving to some object, then picking the Park menu. It returns
to Park 1.

I wanted mind setup this way for CCD Commander which issues a park at
the end of a session. When I start the session, I tell the mount to
move to star and then do a plate solve which centers my star, then I
sync on the star. Works great.

Dean


--- In ap-gto@..., "Stuart Heggie" <stuart.j.heggie@...>
wrote:

Roland, thanks for the fast response. I should clarify that I'm
doing what you described as being the correct way. I have the keypad
in EXT and only use TheSky6.

My resorting to the keypad was because I was having to slew the
scope nearly an hour in RA to get to my target. The keypad clock and
my computer clock are within seconds of each other. I realize why
parking the mount with TheSky6 after using the keypad messes me up.

Is it possible I'm messing up the initialization of the mount with
TheSky6 and it doesn't believe it is starting in Park 1?

Stuart
----- Original Message -----
From: chris1011@...
To: ap-gto@...
Sent: Thursday, September 13, 2007 11:26 PM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 9:01:19 PM Central Daylight Time,
stuart.j.heggie@... writes:

> The only thing that is odd is that when I establish my
connection to the
> mount and slew to my first target, it is always off by a lot in
RA (a tiny bit
> in dec).

When you sync or park with The Sky you are establishing a time
which is then
used by the servo to establish the RA position of the right
ascension
gearwheel. When you start the mount up the next time you probably
unpark it with the
keypad. Now the mount uses the keypad time to establish the RA
position of the
gearwheel (Dec is always correct because it is time independent -
only the RA
position changes with time). Now that you know that time
establishes an RA
position on the gearwheel, you can probably guess that the reason
for your
position being off is that the initialization of the mount with
the keypad sends a
different time to the mount, and therefore causes the mount to be
off. For
every 1 second difference betwen keypad time and The Sky time,
your RA wheel
position changes by 15 arc seconds.

The solution is to always park with the keypad and then startup
with the
keypad - or always park with The Sky and startup with The Sky
(put the keypad into
EXT mode so that it cannot start the mount). Do not mix and match
controlling
software unless you have both times totally exact, and you cannot
guarantee
this from one session to another because both computer clocks and
keypad clocks
will drift from day to day. They are relatively accurate, but not
to the
second.

Roland Christen

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





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


Re: Using TheSky6 to control my AP900GTO CP2

Roland Christen
 

In a message dated 9/14/2007 11:20:06 AM Central Daylight Time,
shammo@... writes:


we had
to manually set a park position using a level. We both put the tube level
and the counter weight shaft slightly tilted down, then connected the mount
in The Sky and did a set park position.
That is a very good idea. Tilting the counterweight shaft slightly down means
that the scope is pointed above the horizon in this park position, and this
avoids all kinds of potential problems. The keypad Park 2 position is actually
also set slightly above the horizon by about 10 seconds of time or 150 arc
seconds of position.

Rolando


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Re: Using TheSky6 to control my AP900GTO CP2

Roland Christen
 

In a message dated 9/13/2007 10:46:58 PM Central Daylight Time,
stuart.j.heggie@... writes:


Is it possible I'm messing up the initialization of the mount with TheSky6
and it doesn't believe it is starting in Park 1?
Yes, it's quite possible. For one thing "The Sky6" does not send the correct
time to the mount in the summer during daylight savings time. Therefore RA is
off by 1 hour or 15 degrees. There are numerous other bugs in that program
that can cause problems if you use it as your main operation source. I recommend
using Pulse Guide if you want to start and park your mount via your computer
instead of the keypad.

Roland Christen


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Re: Using TheSky6 to control my AP900GTO CP2

Stuart Heggie <stuart.j.heggie@...>
 

Roland, thanks for the fast response. I should clarify that I'm doing what you described as being the correct way. I have the keypad in EXT and only use TheSky6.

My resorting to the keypad was because I was having to slew the scope nearly an hour in RA to get to my target. The keypad clock and my computer clock are within seconds of each other. I realize why parking the mount with TheSky6 after using the keypad messes me up.

Is it possible I'm messing up the initialization of the mount with TheSky6 and it doesn't believe it is starting in Park 1?

Stuart

----- Original Message -----
From: chris1011@...
To: ap-gto@...
Sent: Thursday, September 13, 2007 11:26 PM
Subject: Re: [ap-gto] Using TheSky6 to control my AP900GTO CP2


In a message dated 9/13/2007 9:01:19 PM Central Daylight Time,
stuart.j.heggie@... writes:

> The only thing that is odd is that when I establish my connection to the
> mount and slew to my first target, it is always off by a lot in RA (a tiny bit
> in dec).

When you sync or park with The Sky you are establishing a time which is then
used by the servo to establish the RA position of the right ascension
gearwheel. When you start the mount up the next time you probably unpark it with the
keypad. Now the mount uses the keypad time to establish the RA position of the
gearwheel (Dec is always correct because it is time independent - only the RA
position changes with time). Now that you know that time establishes an RA
position on the gearwheel, you can probably guess that the reason for your
position being off is that the initialization of the mount with the keypad sends a
different time to the mount, and therefore causes the mount to be off. For
every 1 second difference betwen keypad time and The Sky time, your RA wheel
position changes by 15 arc seconds.

The solution is to always park with the keypad and then startup with the
keypad - or always park with The Sky and startup with The Sky (put the keypad into
EXT mode so that it cannot start the mount). Do not mix and match controlling
software unless you have both times totally exact, and you cannot guarantee
this from one session to another because both computer clocks and keypad clocks
will drift from day to day. They are relatively accurate, but not to the
second.

Roland Christen

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Using TheSky6 to control my AP900GTO CP2

Stuart Heggie <stuart.j.heggie@...>
 

Hi all - I'm trying to get into the 21st century (a little late). I am using TheSky6 for mount control and it is simply great. The only thing that is odd is that when I establish my connection to the mount and slew to my first target, it is always off by a lot in RA (a tiny bit in dec). I pick a bright target and use the hand controller to put it on the right object and then sync in TheSky6. From there everything works like a charm until I park and of course, it parks off by what I'm guessing is the exact amount by which I moved it at the start of the session.

I have fiddled with location and time with no success. I have the correct long/lat and local time. I've tried disabling daylight saving, lying about my timezone offset, and that doesn't change the behaviour at all (which I don't think is surprising since probably the mount is using my long/lat and local time only).

Help?

Stuart


Re: Using TheSky6 to control my AP900GTO CP2

Roland Christen
 

In a message dated 9/13/2007 9:01:19 PM Central Daylight Time,
stuart.j.heggie@... writes:


The only thing that is odd is that when I establish my connection to the
mount and slew to my first target, it is always off by a lot in RA (a tiny bit
in dec).
When you sync or park with The Sky you are establishing a time which is then
used by the servo to establish the RA position of the right ascension
gearwheel. When you start the mount up the next time you probably unpark it with the
keypad. Now the mount uses the keypad time to establish the RA position of the
gearwheel (Dec is always correct because it is time independent - only the RA
position changes with time). Now that you know that time establishes an RA
position on the gearwheel, you can probably guess that the reason for your
position being off is that the initialization of the mount with the keypad sends a
different time to the mount, and therefore causes the mount to be off. For
every 1 second difference betwen keypad time and The Sky time, your RA wheel
position changes by 15 arc seconds.

The solution is to always park with the keypad and then startup with the
keypad - or always park with The Sky and startup with The Sky (put the keypad into
EXT mode so that it cannot start the mount). Do not mix and match controlling
software unless you have both times totally exact, and you cannot guarantee
this from one session to another because both computer clocks and keypad clocks
will drift from day to day. They are relatively accurate, but not to the
second.

Roland Christen


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http://www.aol.com