Re: [ap-gto] 1200 GTO tries to attack pier...


Aug 8, 2001

 


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#3189 Aug 8, 2001

Last night I resumed from park, and told my 1200 to go to Mars (so to

speak), which it did with the scope side of RA pointing WEST. Mars

was not quite centered (I usually have to recal a tad after a

resume), so I centered it and hit recal. The night was young and the

atmosphere uncooperative, so I decided to pop to Albireo, entered it,

hit GOTO, and the RA axis decided to travel West through my pier to

get to it... I hit STOP, and then (and this was me not anticipating

the result) decided to park, thinking that it might reset whatever

was wrong; the scope tried to Park by traveling West... and stop did

not work, so I loosened a few nobs VERY quickly, and held the scope

as the mount did it's business, with the counterweight shaft pointed

UP. Please tell me that I am:



1. Crazy

2. Medicated

3. Dealing with a HAL 9000

4. All of the above

5. Going to be OK when I get the new chip?



Working off adrenaline...



:% Thanks for any info,



John



----------------------------

#3190 Aug 8, 2001

I've also noticed that parking the mount is an irrevocable operation,

which can't be aborted like a normal slew. I've been told by the

A-P folks that new (keypad?) software will fix this problem.

I had a similar near-encounter with the pier that I prevented by

pulling the power to the mount.



louie

> Last night I resumed from park, and told my 1200 to go to Mars (so to

> speak), which it did with the scope side of RA pointing WEST. Mars

> was not quite centered (I usually have to recal a tad after a

> resume), so I centered it and hit recal. The night was young and the

> atmosphere uncooperative, so I decided to pop to Albireo, entered it,

> hit GOTO, and the RA axis decided to travel West through my pier to

> get to it... I hit STOP, and then (and this was me not anticipating

> the result) decided to park, thinking that it might reset whatever

> was wrong; the scope tried to Park by traveling West... and stop did

> not work, so I loosened a few nobs VERY quickly, and held the scope

> as the mount did it's business, with the counterweight shaft pointed

> UP. Please tell me that I am:

>

> 1. Crazy

> 2. Medicated

> 3. Dealing with a HAL 9000

> 4. All of the above

> 5. Going to be OK when I get the new chip?

>

> Working off adrenaline...

>

> :% Thanks for any info,

>

> John

>



----------------------------

#3193 Aug 8, 2001

I've also noticed that parking the mount is an irrevocable operation,

> which can't be aborted like a normal slew. I've been told by the

> A-P folks that new (keypad?) software will fix this problem.

> I had a similar near-encounter with the pier that I prevented by

> pulling the power to the mount.



I don't think that will bring new information, but the same thing is

consistenly the case for my new 900 GTO.



Best regards,



Niels Foldager



----------------------------

#3194 Aug 8, 2001

In a message dated 8/8/2001 5:29:54 AM Pacific Daylight Time,

jdouglas@... writes:



> Last night I resumed from park, and told my 1200 to go to Mars (so to

> speak), which it did with the scope side of RA pointing WEST. Mars

> was not quite centered (I usually have to recal a tad after a

> resume), so I centered it and hit recal



Mars was probably right on the meridian, and crossed over when you did a

recal. This meant that now the mount will pick up all objects with the scope

underneath, because you recalibrated the mount in that orientation. In the

new chip, we have added a routine that keeps track of the side that the scope

is on, and even if you recal on the wrong side, i.e. with the scope under the

mount, it will now operate correctly for all objects and park positions. We

never anticipated the problem originally with recal when the scope is

underneath the mount (or past the meridian). That has now been fixed so that

you cannot get lost, BUT this assumes that the very first object or star is

chosen with the scope on the correct side of the mount. If you do that, then

all objects will come in correctly after that, no matter what you do with the

recal.



Roland Christen





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



----------------------------

#3195 Aug 8, 2001

we have added a routine that keeps track of the side that the scope

> is on, and even if you recal on the wrong side, i.e. with the scope

> under the mount, it will now operate correctly for all objects and

> park positions.

> Roland Christen



Thanks Roland,



as usual you have exceeded my expectations!



John



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#3210 Aug 8, 2001

I've also noticed that parking the mount is an irrevocable operation,

>which can't be aborted like a normal slew.





In the meantime I would overcome that by not using park. You can still

stow the optics how you want but its so easy to slew to a star after

startup and sync on that. As it happens I never use park anyway because I

remove the optics after each session (I am too mobile to have an observatory)..



--Philip



Philip Perkins - philip@...

Wiltshire UK & Luberon France

Astrocruise - www.astrocruise.com







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