Re: Question about MaxPoint


Mar 3, 2010

 


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

#40293 Mar 3, 2010

Hi Doug



Probably this question has been asked before about MaxPoint: I understand It

corrects the telescope position, but is it enough to replace the

autoguiding? Are two different concepts?



Thank you in advance,



Alfredo





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



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

#40294 Mar 3, 2010

MaxPoint does not replace autoguiding.

MaxPoint points.

That's all.



TPoint (used by SB's CCDSoft) can also modify the track rates on the

Paramount.

Some claim amazing things for it.

I don't.



Most things, the Hale Telescope, The Hubble Telescope Guide.



A fast short focal length optical system (FSQ106) on a good mount few

minute images before guiding is needed.



Larry





Alfredo Beltran wrote: >

> Hi Doug

>

> Probably this question has been asked before about MaxPoint: I

> understand It

> corrects the telescope position, but is it enough to replace the

> autoguiding? Are two different concepts?

>

> Thank you in advance,

>

> Alfredo

>

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

>

>



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

#40295 Mar 3, 2010

On 2010-03-03 3:25 PM, Alfredo Beltran wrote: > Hi Doug

>

> Probably this question has been asked before about MaxPoint: I understand It

> corrects the telescope position, but is it enough to replace the

> autoguiding? Are two different concepts?



They are completely different concepts, BUT it actually is possible to use

MaxPoint to help with tracking.



MaxPoint corrects the pointing of the telescope, so when you slew to a target

the object is actually in the field. This is fixing *large* errors in the

telescope position. Polar misalignment, periodic error, wind loads, etc. are

*small* errors that are not corrected by MaxPoint "out of the box".



That said, it *is* possible to correct for drift due to polar alignment,

flexure, etc. using MaxPoint. John Winfield distributes a MaxPoint add-on for

this purpose at winfij.homeip.net/maximdl/smarttrack.html



If you want to use this MaxPoint add-on to achieve long unguided exposures, then

I would strongly recommend using periodic error correction (PEC) as well. Most

telescope mounts support this, but the difficult is training the correction.

PEMPro is a very good application for this purpose.



With good PEC training and John's SmartTrack running, it should be possible to

achieve five minute unguided exposures.



Doug



--



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com/



100 Craig Henry Dr., Suite 202

Ottawa, Ontario,

Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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

#40296 Mar 3, 2010

Ok Douglas thanks for your help



Alfredo



2010/3/3, Douglas B. George dg@...>: > On 2010-03-03 3:25 PM, Alfredo Beltran wrote:

>> Hi Doug

>>

>> Probably this question has been asked before about MaxPoint: I understand

>> It

>> corrects the telescope position, but is it enough to replace the

>> autoguiding? Are two different concepts?

>

> They are completely different concepts, BUT it actually is possible to use

> MaxPoint to help with tracking.

>

> MaxPoint corrects the pointing of the telescope, so when you slew to a

> target

> the object is actually in the field. This is fixing *large* errors in the

> telescope position. Polar misalignment, periodic error, wind loads, etc.

> are

> *small* errors that are not corrected by MaxPoint "out of the box".

>

> That said, it *is* possible to correct for drift due to polar alignment,

> flexure, etc. using MaxPoint. John Winfield distributes a MaxPoint add-on

> for

> this purpose at winfij.homeip.net/maximdl/smarttrack.html

>

> If you want to use this MaxPoint add-on to achieve long unguided exposures,

> then

> I would strongly recommend using periodic error correction (PEC) as well.

> Most

> telescope mounts support this, but the difficult is training the correction.

> PEMPro is a very good application for this purpose.

>

> With good PEC training and John's SmartTrack running, it should be possible

> to

> achieve five minute unguided exposures.

>

> Doug

>

> --

>

> Doug George

> dgeorge@...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com/

>

> 100 Craig Henry Dr., Suite 202

> Ottawa, Ontario,

> Canada, K2G 5W3

>

> Phone: (613) 225-2732

> Fax: (613) 225-9688

>



--

Enviado desde mi dispositivo m.vil



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