Re: [APML] Re: [Astrophotography] Auto Guiders

[Alan Voetsch <critter12952@yahoo.com>]

Hi Emmanuele,

I have no experience with webcams, so I'll leave that
alone.

> 2) As a matter of fact, I have an SCT OTA, which I
> read is a pain the neck 
> to guide with a separate guidescope. Do I have to
> give up my hopes and 
> stick with an off-axis guider?

Many would say yes. The moveable mirror can lead to
poor images. You can be guiding just fine through a
guidescope, meanwhile, the SCT's mirror is adjusting
itself as the OTA slowly moves across the sky. Given
this, many prefer to use the same optics for guiding
i.e. off-axis. But, you never know 'til you try. With
a good lock down system (such as Chris Vedeler's in
the MAPUG archives, or Doc G's site) you might be able
to pull it off.

Alan

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