Re: [MaxImDL] Re: Question about Guider Settings/Autoguider Ouptut set to Telescope.


Sep 16, 2010

 


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#42800 Sep 16, 2010

When the Guider Settings/Autoguider Output is set to

Telescope:



What does the calibration do ?



The calibration is supposed to compute the rates and angles which corresponds to the time the x/y buttons are pressed.



But what is the abstraction when guiding using the Telescope for holding the x button down ?



I mean I would have thought it would have just told it to move the telescope in arc seconds rather than deal with a push button abstraction.



Larry



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#42804 Sep 16, 2010

--- In MaxImDL@yahoogroups.com, "lawrence_d_lopez" lopez@...> wrote: > I would have thought it would have just told it to move the

> telescope in arc seconds rather than deal with a push button

> abstraction.



You would have been wrong. See the description of the PulseGuide method in the ASCOM documentation (Telescope Interface Standard 2.0):



| Telescope.PulseGuide() Method

|

| Moves the scope in the given direction for the given interval or

| time at the rate given by the corresponding guide rate property

|

| Syntax

|

| Telescope.PulseGuide(Direction, Duration)

|

| Direction The direction in which the guide-rate

| (GuideDirections) motion is to be made

|

| Duration (Long) The duration of the guide-rate motion

| (milliseconds)



So it really does use the "hold the button down" abstraction. And calibration is needed to determine how fast the telescope moves while the 'button' is down, or more precisely, how far it moved when the 'button' was held down for the specified calibration time. (As well as the direction on the image, of course.)



Hilderic Browne

Diffraction Limited



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#42805 Sep 16, 2010

Cool !!!



Hilderic Browne wrote: > --- In MaxImDL@yahoogroups.com, "lawrence_d_lopez" lopez@...> wrote:

>

>> I would have thought it would have just told it to move the

>> telescope in arc seconds rather than deal with a push button

>> abstraction.

>>

>

> You would have been wrong. See the description of the PulseGuide method in the ASCOM documentation (Telescope Interface Standard 2.0):

>

> | Telescope.PulseGuide() Method

> |

> | Moves the scope in the given direction for the given interval or

> | time at the rate given by the corresponding guide rate property

> |

> | Syntax

> |

> | Telescope.PulseGuide(Direction, Duration)

> |

> | Direction The direction in which the guide-rate

> | (GuideDirections) motion is to be made

> |

> | Duration (Long) The duration of the guide-rate motion

> | (milliseconds)

>

> So it really does use the "hold the button down" abstraction. And calibration is needed to determine how fast the telescope moves while the 'button' is down, or more precisely, how far it moved when the 'button' was held down for the specified calibration time. (As well as the direction on the image, of course.)

>

> Hilderic Browne

> Diffraction Limited

>

>

>

>

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

>

> Yahoo! Groups Links

>

>

>

>

>







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