Re: [ATM] Looking for: The ATM Page - Eyepiece Focal Positions

["Andre Yanoviak" <andre_y6@hotmail.com>]

Dear Bill,

Could you please send me an attachment of that spreadsheet privately?  I'd 
really appreciate it.

I'm not sure if it's what I'm looking for right now, but I think it will 
help in the future.

I finally noticed the "F" dimension in TeleVue's specs -- something which 
lets me compare across brands, as it's easy to find/borrow a TV EP at any 
club star party and use it to measure the difference to brand X.  I'm hoping 
to do this Saturday night.

Thanks,

-- Andre


>From: Bill Prewitt <bprewitt@neo.rr.com>
>To: Andre Yanoviak <andre_y6@hotmail.com>
>CC: atm@atmlist.net
>Subject: Re: [ATM] Looking for: The ATM Page - Eyepiece Focal Positions
>Date: Wed, 18 Jan 2006 21:34:26 -0500
>
>I have a copy of a spreadsheet called epfiles.xls  (dated 7/2003), 533kb
>It has data for 389 eyepieces.
>There's no author name or copyright notice on it that I can find.
>Would this be helpful ?
>
>Here's a fragment exported to ASCII
> >
> > Parfoc,focale,Type,Brand,Elt.,FOV,Magnif.,"X / """,Exit pupil,Eye 
>relief,Field stop,Chmp réel,,Chmp réel,,Chmp réel,,True field,,,,Barrel 
>size,Price,BE/LU,,FR,Weight,Length 
>(full),Lg.barrillet,"Dia.2""",Diam.exter.,Comments
> > 
>,(mm),,,,(°),,,,(mm),(mm),2x,,f=,,f=,,,,,,(mm),($),,,,(g),(cm),(cm),(cm),(cm),
> > ,100,Modified Plossl,Paul 
>Rini,5?,28,20,3,10.00,,48.9,0.70,#REF!,1.40,0.40,#REF!,#REF!,1,°,24.0,',2,40,,,,,,,,,prob.too 
>much relief (blackout)
> > 
>(d),80,Ultima,Celestron,5,36,25,3,8.00,32,50.3,0.72,#REF!,1.44,0.44,#REF!,#REF!,1,°,26.4,',2,90,8130,,,,,,,,"short 
>FOV, prob. View hard to hold due to huge relief"
> > ,68,Modified Plossl,Paul 
>Rini,3?,40,29,4,6.80,,47.5,0.68,#REF!,1.36,0.36,#REF!,#REF!,1,°,21.6,',2,40,,,,,,,,,
>
>
>
>
>Andre Yanoviak wrote:
> > Hello,
> >
> > This was a terrific resource; apparently now it's gone.  It was at
> > http://www.atmpage.com/epfocal.html.
> >
> > Has it moved elsewhere?  Or did anyone save a copy?
> >
> > I'm trying to decide on focuser travel for the scope I'm designing to 
>cover
> > the EPs I don't have but do desire.  From what I can recall, this would
> > answer my questions or at least give me a great start.
> >
> > Thanks,
> >
> > -- Andre
> >
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