Re: [APML] Focusing and temperature change issues during an exposure- advice wanted

["Steve..." <swalters@worldnet.att.net>]

Alan,

I bought a BRC250. It has a carbon fiber tube and temperature compensation
on the secondary. It doesn't shift focus at all from what I've experienced
even going from deep winter to summer.

Steve...

----- Original Message -----
From: "Alan Voetsch" <critter12952@yahoo.com>
To: <astro-photo@seds.org>
Sent: Wednesday, November 13, 2002 10:21 PM
Subject: Re: [APML] Focusing and temperature change issues during an
exposure- advice wanted


> Hi Steve,
>
> --- "Steve..." <swalters@worldnet.att.net> wrote:
> > FWIW, I struggled for 2 or 3 years with a 12" Meade
> > SCT and focusing. The
> > combination of mirror flop and (especially) thermal
> > problems drove me to buy
> > an OTA with a carbon fiber tube.
>
> I've only had a few months of serious work with the
> 12". I have plenty of objects on my potential target
> list, and I think it is still a viable piece of
> equipment. At some point though, yeah, I'll be looking
> at a RC. What I really want right now, is to be able
> to monitor a star for sharpness during an exposure.
>
> What are you using now?
>
> Alan
>
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