Re: [ATM] webcam and Foucault test?

["Polk, Tom" <TPolk@decatur-al.gov>]

My results are similar with a Philips Vesta Pro (same CCD as ToUCam,
IIRC). 30mm f.l.; 25mm f.l. and 20mm f.l. All coated achromatic lens
with homemade cells. A grid was not used but a black and white box cover
from a Seagate hard drive that I just bought was used in front of my
mirror. An image was zoomed, text lines were checked for "straightness"
and the images checked for "waviness". I know, not scientific. Call it
my two cents.

Tom Polk

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf
Of James Lerch
Sent: Monday, July 24, 2006 8:49 AM
To: Jeff Rowe; Bob May
Cc: atm@atmlist.net
Subject: Re: [ATM] webcam and Foucault test?

>SNIP<

http://lerch.no-ip.com/atm/2ndTry/Robo2/Robo2_Camera.jpg (48KB)
http://lerch.no-ip.com/atm/2ndTry/Robo2/CameraCalibrate.jpg (57KB)
http://lerch.no-ip.com/atm/2ndTry/Robo2/zone_cal_1.jpg (86KB)
http://lerch.no-ip.com/atm/2ndTry/Robo2/zone_cal.jpg (87KB)

BTW, the Human Eyeball is a terrible lens / detector system, and an eye
at the 
knife edge is industry standard for several well known companies.





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