Re: [ATM] Focuser, Derotator, Off Axis Guider

[Jonathan Lavoie <atm@lavoielactee.net>]

I'm dreaming of a guiding software that could account for a non-rotated 
guidescope on an alt-az mount. That should't be impossible to program and 
would make the joy of many alt-az users!

Jonathan

----- Original Message ----- 
From: <martin.cibulski@t-online.de>
To: <atm@atmlist.net>
Sent: Thursday, September 22, 2005 10:56 AM
Subject: [ATM] Focuser, Derotator, Off Axis Guider


> Hi,
>
> I plan to take photographs with my 14" dobson telescope.
> Because of the field rotation the best guiding solution
> seems to be an off axis guider.
> Using a secong telescope for guiding is more complicated
> because this scope has to be rotated too and the rotating
> assembly must be very precisely parallel to the main scope's
> optical axis.
>
> So I need
> 1. field derotator around the focuser
> 2. off axis guider
> 3. low profile focuser with extension for viual use
> . . . very expensive.
>
> I think it should be possible to build a focuser with integrated
> off axis guider. The the guider doesn't need additional backfocus.
> If a derotator is already there I could seek for a guide star
> by rotating the whole focuser instead of rotating the OAG alone.
>
> The focuser housing around the tube must be open to one side to
> allow the second tube of the OAG to be mounted.
>
>
> Any thoughts ?
>
> Regards,
> Martin Cibulski
> http://www.martin-cibulski.de/atm
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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