Re: [ATM] No meeting tonight

["Robert Mohr" <rmohr@tiwcorp.com>]

Hi Francis,

I hope you can make it down to visit!

We generally do testing with Foucault or Ronchi. Depending on how 
accurate we need to be. For just rough testing, we'll use the Ronchi, along 
with the WINRONCHI program that shows what it should look like at various 
locations. 

When it's getting serious we'll go to the Foucault setup. I have one I made 
from a precision linear rail with digital readout. It's heavy though, so I don't 
bring it unless someone is in need of it. If you want me to bring it, let me 
know. If you want to do Foucault, you need to bring masks for whatever 
mirror size you have.

I also have a digital spherometer that's accurate to 50 millionth of an inch, 
so we use that up until polishing is almost done.

Bob

> Robert,
> 
> I'll try to get away next Friday and bring some glass with me to throw up on 
> a tester. What type of testing do you guys use? Should I bring my own 
> Foucault/Ronchi apparatus?
> 
> Regards,
> 
> FJO
> ----- Original Message ----- 
> From: "Robert Mohr" <rmohr@tiwcorp.com>
> To: "ATMList" <atm@atmlist.net>
> Cc: "Francis J. O'Reilly" <foreilly@verizon.net>
> Sent: Wednesday, March 21, 2007 10:49 AM
> Subject: Re: [ATM] No meeting tonight
> 
> 
> > Hi Francis,
> >
> > We always welcome visitors to our TM Group. If people show up regularly, 
> > we would request
> > that they join the LVAAS. There is no additional charge to members, other 
> > than the materials
> > they supply themselves. We often have non members show up with questions, 
> > or requiring
> > help with collimation or polar alignment of their new scopes, and we 
> > always try to get their
> > issues taken care of.
> >
> > Our format is a bit different than a lot of TM classes, in that generally 
> > members do their work
> > at home, then bring their projects and questions to the monthly meetings. 
> > Depending on what
> > is currently being worked on by the members, the sessions could range from 
> > testing to
> > general bull sessions. I am hoping to have my new fold up 10"f/5 twin 
> > truss Dob finished for
> > the next meeting which is March 30th. ( I cheated and bought a mirror for 
> > this one, it had to
> > be done in time for a vacation)
> >
> > For directions to the LVAAS, or for more information see our web site at: 
> > www.lvaas.net
> >
> > The LVAAS is totally membership funded, not being affiliated with museums, 
> > universities,
> > etc. We operate 2 observing sites with 8 observatories, again all 
> > volunteer maintained, so
> > sometimes some are off line.
> >
> > The TM class is held at the South Mountain, Allentown, PA site. It begins 
> > at 7:00 PM The
> > next couple meetings are March 30, May 4, June 1
> >
> > Bob Mohr
> >
> >>
> >>
> >> Mr. Mohr,
> >>
> >> I live in Brewster, NY. I'd like to drive down and attend a glass pushing 
> >> session or two. I'd be more than willing to pay a membership fee to join 
> >> the club. Is that possibility open to me?
> >>
> >> Francis J. O'Reilly
> >> _______________________________________________
> >> ATM mailing list http://www.atmlist.net/
> >>
> >
> >
> >
> > Robert Mohr
> > Director of Technical Services
> > TIW Technology, Inc
> > rmohr@tiwcorp.com
> > See our web site at www.tiwcorp.com
> > 
> 
> 
> 



Robert Mohr
Director of Technical Services
TIW Technology, Inc
rmohr@tiwcorp.com
See our web site at www.tiwcorp.com
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