[APBeta] APv2b34 scope control problem

Bruce Pipes bruce.pipes at fandm.edu
Fri Apr 17 09:44:15 PDT 2009


Thanks, Paul. Is this something that has changed since APv1.6.1? It  
works fine it that version. It slews to home and disconnects.

On Apr 17, 2009, at 11:49 AM, Paul Rodman wrote:

>
> On Apr 17, 2009, at 07:57 AM, Bruce Pipes wrote:
>
>> I used APv2b34 in a imaging session last night and it passed every  
>> test but the final exam. At the end of the session I clicked "Slew  
>> to Home" on the Telescope Control Palette expecting the scope to  
>> slew to Dec = 0° with the scope pointing south. Instead it slewed  
>> to Dec = +20° and it kept slewing in RA until I had to hit the  
>> power off switch on the scope.
>>
>> I have filed a bug report.
>>
>> Thanks,
>> Bruce Pipes
>> LX200ACF and MacOS 10.5.6
>
> Looking at the code, what happens is that a :hF# command is issued  
> by the app. According to the Meade documentation (which is often  
> reality-challenged), this should do the job. However, I note that  
> the button has "(and disconnect)" underneath it. This I do not  
> currently do (and probably should). This means that the app will  
> continue to send requests for RA/Dec to the scope. I'm not sure if  
> this would cause the problem (i.e. "Oh, the user want's me to slew  
> to home. OK, here we go. Oh, wait, now he wants the current RA. I'll  
> just conveniently forget about waiting for the home position to be  
> reached, etc. and process the new command instead).
>
> I've cc-ed this to Dick Seymour, the font of wisdom on these  
> matters. If any body in this universe can shed light on the matter,  
> it's Dick.
>
> Paul R.
>
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