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20042Re: [William Optics] FLT132 drawtube

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  • ragoldwenz
    Jun 18, 2009
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      --- In William-Optics@yahoogroups.com, "mitch" <mitchfry@...> wrote:
      >Hello Mitch,

      you may refer to my earlier posting No. 19657 Re: FLT 132 focuser backlash. Maybe, this is of help.

      Best regards

      Ragold

      > Thanks Yoshio, I can see how that work. Although I still cant believe that this is normal, particularly not with a top end instrument such as this? Anybody else have any suggestions?
      >
      >
      > --- In William-Optics@yahoogroups.com, Yoshio Kitajima <ae3y-ktjm@> wrote:
      > >
      > > Hi Mitch,
      > >
      > > I have the FLT132 and the flattener.
      > > I am the same situation, too.
      > > I use FLI's ML11002M and Filter Wheels.
      > > They are not light.
      > > So I order metalwork person to install two metal rings
      > > to fix the drawtube.
      > > I perform focus adjustment in FLI DF-2.
      > > So I can not use eyepiece only CCD-camera.
      > > http://starlightcafe.jp/astro/fltring.jpg
      > >
      > > You can see oneside metal ring.
      > > There is already one on the tip of the draw tube.
      > > Sorry my english is poor.
      > >
      > >
      > > > Hi,
      > > > Just playing around with a used FLT132 that I have recently purchased. There seems to be a lot of play in the drawtube, so much so that it is putting out the collimation. The play is "up & down", not "in & out". With a CCD and extension tube, the weight is pulling the drawtube down (i.e. at right angles to the scopes long axis).
      > > > That cant be right, can it? Anybody have any experience of this, adjustments possible, etc?
      > > > Regards,
      > > > Mitch
      > > >
      > > >
      > > >
      > > > ------------------------------------
      > > >
      > > > www.williamoptics.com www.williamopticsracing.comYahoo! Groups Links
      > > >
      > > >
      > > >
      > > -----------------------------------------
      > > Yoshio Kitajima
      > > JAPAN
      > > mailto:ae3y-ktjm@
      > > http://starlightcafe.jp
      > > -----------------------------------------
      > >
      >
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