From: "Russell Jocoy" 
To: wmkocken{at}hotmail.com, atm{at}shore.net
Reply-To: "Russell Jocoy" 


>From: "bill kocken" 
>Reply-To: "bill kocken" 
>To: 
>Subject: Re: ATM Spider design
>Date: Wed, 16 Jul 2003 22:27:44 -0500
>
>
>I stand corrected about where the spikes will form, but the squashed X
>still
>produces 4 spikes, perpendicular to the vanes.
>
>----- Original Message -----
>From: "Jim Miller" 
>To: 
>Sent: Wednesday, July 16, 2003 11:27 AM
>Subject: Re: ATM Spider design
>
>




("atm{at}shore.net")

       I tell you what, I will take a photo when I complete my scope and
list it on the ATM list for all
to see what type of diffraction spikes are present. My only concern was
undue obstruction..

                       Russ J.
("atm{at}shore.net")




..........................................................................
> >
> > spikes produced by a vane are always perpendicular to the vane and
> > symmetric.
> >
> > jtm
> > >    Hello all again,
> > >
> > >             I have made my own spider out of extruded
aluminum 1"x
>1/16"
> > >thick. My question to the list
> > >is if my spider veins are not at  90 degree angles does this cause an
>image
> > >problem. My anchoring
> > >position is more like a squashed X.    I have seen curved spiders, but
>I
> > >don't see how any tension
> > >can be applied. I have heard that the diffraction spikes are eliminated
>by
> > >the curved supports.
> > >         Am I clogging areas by squashing my supports.. Here are the
> > >dimensions
> > >   Diameter of cage.... (9.5")
> > >  The "X" is squashed to 4.5" between supports
on each side leaving
>about
> > >11" (on the diameter
> > >measurement) on the opposite gap..something like this........
> > >
> > >                                                              *
> > >     *
> > >                                                                 *
> > >  *
> > >                                                                     *
>*
> > >
>*
> > >                                                                     *
> > >*
> > >                                                                 *
> > >    *
> > >                                                              *
> > >       *
> > >
> > >                          Russ Jocoy
> > >("atm{at}shore.net")
> > >                                                                 *
> > >  *
> > >
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>

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