Re: ATM 130 line slide

[Dominic-Luc Webb molmed <Dominic.Luc-Webb@molmed.ki.se>]

On Thu, 10 Aug 2000, jw wrote:

> 
> Hello, all:  Since a Linux crash and burn about 10 months ago. and the
> subsequent loss of many things (including ATM post saves)  I cannot recall
> who offered to send me a slide with either 100 or 130 lines for testing.  I
> DID download a postscript pattern from somewhere, and had it laser-printed
> on overhead projector clear acetate, but the lines are quite blurry for
> whatever reason.If that individual is still reading the list.... I might
> take you up on your previous offer, now.  If someone has alternatives, I'd
> like to hear those, also.  Thanks ............    JW


It may have been me. I certainly have slides. I could also arrange 
a postscript file. Sadly, it is hard to get good slides. I have 
professional imaging and slide recording equipment for my 
research, but even this is no match for the commercial glass with 
lines. I suspect just wrapping some wire around a metal frame 
would do better. However, using a bright light (about 40 watt), 
and the razor blade "trick" for a tester, I am able to see 
the appropriate patterns. Its just that the image is darker 
than I have seen using commercial glass with grids (i.e., the 
one at Chabot workshop in Oakland, CA, USA). Others in the 
list suggested Edmund Scientific sell the glass ones pretty 
cheap, but I have asked the UK office repeatedly and was told 
that they sell no such product. Indeed, it is also not in the 
last edition of the UK ES optical components catalog. I cannot 
say whether the UK office simply did not know what I meant or 
if it is a US exclusive product.

In any event, if you wish to have one of my slides, 
just send your address....


Cheers,


Dominic

North 59 37' 30"
East  17 48' 10"

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Dominic-Luc Webb, doktorand


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