Re: [APML] Framing shots - was New North American Nebula

["mstecker" <mstecker@dslextreme.com>]

Losmandy built an expensive mount (GM200) for large telescopes like the C-14
that had no manual setting circles.  It used digital setting circles that
were extremely inaccurate (+/- 5 degrees), making the mount nearly useless
for those (like me) who are not able to find objects without setting
circles.

For framing an object I use the star pattern as a guide and do not rely on
digital or manual setting circles.


Michael Stecker
mstecker@dslextreme.com

My Web Site:
http://www.homestead.com/mstecker/index.html (INDEX)
http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
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----- Original Message -----
From: "Robert Reeves" <reeves10@swbell.net>
To: <astro-photo@seds.org>
Sent: Monday, September 09, 2002 8:34 AM
Subject: Re: [APML] Framing shots - was New North American Nebula


> > Hi Rob and all,
> >
> > Not having a goto mount, nor digital setting circles, I find that
framing
> > objects I can't see to be somewhat of a gamble.  I pull the camera off
of
> > the scope and stick a 26mm eye-peice inside of a tube I rigged up to be
> > parfocal with the camera to frame shots.  The problem is that when I try
> to
> > match up the field of view with the little squiggly lines showing a
nebula
> > on my sky charts, I don't always get it right.
> >
> > If any one has suggestions on better ways to frame shots I would like to
> > hear of them.
> >
> > Thanks,
> > Alan
>
> I have never seen an equatorial mount that did not have scribed "manual"
> setting circles.  With these, you don't need digital circles.  All of my
> shots of visually unseen objects have been framed with old fashioned
scribed
> circles.  Does your mount have these?  If not, then you can align the
finder
> scope with the camera field of view and get pretty close to where you want
> to aim by star hopping.
>
> Robert Reeves                      reeves10@swbell.net
> 520 Rittiman Rd.                   www.robertreeves.com
> San Antonio, Texas 78209    210-828-9036
> USA                                     29.484  98.440  200 meters
>
>
>
>
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