Re: ATM rockerbox

["Rene van den Elzen" <rene@deepskyobjects.com>]

Hi
I think it's not a problem at all.  At Zentih, your scope tube axis would be
off center with your azimuth axis by about 1/2 cm, compare this to an
equatorial scope which is polar aligned, it is off center with the earth's
axis by thousands of kilometers.  Think of it this way, parallel lines meet
at infinity, the stars are at infinity (practically).  Need I say more?

Regards;

Rene


----- Original Message -----
From: "Yvi und Alexander Urban" <alexander.urban@gmx.de>
To: <scope-drive@yahoogroups.com>; <atm@shore.net>
Sent: Friday, August 10, 2001 10:10
Subject: ATM rockerbox


>
> Hi
> I have a question. For the new scope we are building, we constructed today
> the sidewalls of the rockerbox and cutted away the arcs (counterpart to
the
> sidebearing). As it turned out, the deepest point of both sidewalls (and
> also the sidewalls itself) are identical, but NOT in the middle of the
> sidewalls(aprox 1cm away). So if I would rotate now the scope pointed to
the
> zenith, the Centre of the mirror would descrive a circle with a radius of
> 1cm).
> My question: Is this aproblem when using scope.exe or encoders?
> Thanks for your support
> Alex
>
>