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ATM Re: Test stand setup for 30"
--- Hugues.Laroche@ses-astra.com wrote:
>
> Hello Michael,
>
> >Here is the test stand arrangement I use on the 30
> >inch mirror. So far it has made handling it quite
> >easy.
>
> Hm, quite clever!!
> If you do not mind I will do somthing of the kind.
By all means give it a shot, Hugues. The setup came
about because I had to operate out of a garage. The
hinged test stand actually makes a very sturdy storage
device that can roll into the corner of the garage so
I can park the cars. I have to keep peace with my
wife on that!...heh heh heh
> I was toying with a
> similar idea, involving a diedre that would need to
> be tilted, but I found
> it would be dangerous. Your idea of a hinged support
> eliminates the risks of my method.
> I do not have a web site (I should really work on
> this one day),
> so I send you jpeg through email:
I use Adobe Photoshop to create the entire web page
album. It allows for captions and actually writes
every bit of HTML code. I use WS FTP Pro to upload
the files to my site. It is all actually quite easy
to assemble a page to share images with a group that
way.
> The first use of the lifter (2002), to get the
> monster out of its box.
> Since then I have doubled the number of support
> points.
>
> (See attached file: 45_lifter.jpg)
>
> The black beauty... :-)
>
> (See attached file: 103-0334_IMG.JPG)
>
> A slave removing micograms of glass...
So you are doing it hand? Now that IS a job, buddy!
What's the F/ratio? Was the disk curve pre generated
for you?
> (See attached file: 103-0340_IMG.JPG)
>
> The 1/2 pitch on wood polishing tool (the grinding
> tool was a 2/3. Needed
> help of my wife set it gently on the surface)
>
> (See attached file: 103-0341_IMG.JPG)
>
Your pitch lap arrangemnet looks quite similar to
mine. I'm using an 18 inch disk. I have a
description as to how it was assembled using a
"Perfect Pitch Lap" mold.
Take a look:
http://hometown.aol.com/mikepic/LapMaking/index.htm
> You will surely object that my support is
> inadequate. You are right and I
> attribute
> the overcorrection of the mirror to it. I am
> thinking of modifying it
> before to be too
> far in the polishing.
>
> I have attempted a Ronchi test on this b=-2
> hyperbola. The "depth" is
> amazing!!!
>
> Sorry I have to leave. More to come...
>
> Hugues
>
>
>
>
>
>
>
> Michael Conron
>
>
> <mconron@yahoo.co To:
> Hugues LaRoche <hugues.laroche@ses-astra.com>
>
> m> cc:
>
>
>
> Subject: Test stand setup for 30"
>
> 01/16/2004 04:16
>
>
> PM
>
>
>
>
>
>
>
>
>
>
>
>
> Hi Hugues,
>
> Here is the test stand arrangement I use on the 30
> inch mirror. So far it has made handling it quite
> easy.
>
> Mike
>
> http://hometown.aol.com/mikepic/TestStand/index.htm
>
>
>
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> ATTACHMENT part 2 image/jpeg name=45_lifter.jpg
> ATTACHMENT part 3 image/jpeg name=103-0334_IMG.JPG
> ATTACHMENT part 4 image/jpeg name=103-0340_IMG.JPG
> ATTACHMENT part 5 image/jpeg name=103-0341_IMG.JPG
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