Sponsored By:

Subject: Re: LX200 focus motor
From: Philip Hill
Reply To: mapug@shore.net
Date: Sat Oct 01 02:38:46 1994

On Fri, 30 Sep 1994, Richard Somer wrote:

>
> Yes. Some users may be satisfied, but I took mine off and got the Meade
> focuser. The greatest difference is that the JIM focusser (or at least the
> one I got) attaches to the focusing knob, whereas the Meade attaches to the
> rear cell. Thus, the JMI moves the mirror, and the Meade moves the eyepiece
> holder. I had had no mirror shift until after I used the JMI focusser. It
> introduced a considerable shift merely from its movement back and forth,
> apparently somewhat differently from hand movement.
>
Not according to my Meade catalogue! Is this a different focusser that moves the eyepiece? I get the impression that these focussers slip over the manual focussing knob, so as they still move the primary mirror, there's no way of totally avoiding mirror-induced image shift. On re-examining the JMI advert, it maybe that JMI don't make a digital readout and focus drive for the LX200 Meade mirror focussers. I don't like the sound of Meade's gear problem, and I do want a focus position readout. Can anybody clarify what's available?

Phil Hill