Bob
):-{])) <---- madden@netcom.com madden@svpal.org Remember amateur astronomers: "keep looking for the next Universe"
On Wed, 19 Apr 1995 kilian@ironwood-fddi.cray.com wrote:
>
> Thanks for all the suggestions about how to use an LED, but it just
> didn't work out for me.
>
> I tried two more LEDs last night, a 5000 mCd Jumbo red LED from the
> Shack of Radios, and a regular O'l green LED.
>
> I lit them both up until they were ready to burst into flames, but I
> couldn't get enough light out of them to get good contrast.
>
> So I used the old Christmas tree tiny bulb on 5 Vdc and a piece of
> plastic from an old checkbook cover to diffuse the lamp.
>
> Next time I'll use a MiniMag light, and two 1.5 Volt batteries like
> someone suggested.
>
> I use a slit width of 0.002 Inches set with an automotive feeler guage
> and I now get swell images.
>
> My mirror read almost spherical using the new tester. There was NO
> difference between the center, and zone #2 (Next out from center)
>
> This is a radical departure from what I was reading when my slit and edge
> were 10 Inches apart.
>
> So I did two turns with a humongous long stroke concentrating on
> the area where the mirror is about to fall off the left and right
> overhangs, and I got more difference on the two center zones.
>
> More measurements tonight, and I'll let you know.
>
> I also fixed a bug in the Texereau program that was created when I
> converted from BASIC to C. Look out, they use tha variable K as an integer
> and a float.
>
> -Alan Kilian
>