· Get a Cloudy Nights T-Shirt · Submit a Review / Article    Click here if you are having trouble logging into the forums Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> ATM, Optics and DIY Forum Previous   Index   Next   Flat   ken scharf sage Reged: 02/09/08 Posts: 393 Foucault tester questions       06/09/08 10:23 AM Edit   Reply   Quote   Quick Reply:   Several questions: The older way to set up a foucault tester was with the light source fixed and only the knife edge moving. In this case the light was usually always displaced horizontally from the KE. In the newer testers we now have the KE above the light and both move together. The total movement required in the latter case is half of what is required in the former. 1: Isn't the measurement of the KE movement less critical in the older style tester since it must move twice as far to get from zone to zone? 2: With the KE above the light why aren't the screens in front of the mirror arranged with the zones stacked vertical instead of horizontal? (I think it really doesn't matter since the light source would light the entire mirror evenly no matter where it was located in reference to the KE). 3:Wouldn't it be better to move the KE (or both the KE and light together) in a horizontal movement rather than adjust the angle of the KE (tilting it into place) as is most commonly done? This would keep the KE and light slit parallel. Post Extras       Entire thread Subject Posted by Posted on Test your own mirrors! dave b 05/28/08 02:22 PM Re: Test your own mirrors! johndavid24   08/07/09 07:41 PM Re: Test your own mirrors! Biff   08/07/09 08:35 PM Re: Test your own mirrors! Beri   12/06/08 04:28 AM Re: Test your own mirrors! Beri   12/06/08 10:25 AM Re: Test your own mirrors! K. A. Scharf   12/06/08 09:54 PM Re: Test your own mirrors! mark cowan   02/01/09 05:37 PM Re: Test your own mirrors! Mark Harry   02/01/09 05:48 PM Re: Test your own mirrors! Mark Harry   02/01/09 05:52 PM Re: Test your own mirrors! mark cowan   02/01/09 06:00 PM Re: Test your own mirrors! Mark Harry   02/01/09 06:06 PM Re: Test your own mirrors! neo   02/02/09 09:07 AM Re: Test your own mirrors! mark cowan   02/02/09 08:39 PM Re: Test your own mirrors! Biff   02/02/09 10:11 AM Re: Test your own mirrors! mark cowan   02/02/09 08:43 PM Re: Test your own mirrors! The bear   02/02/09 09:20 PM Re: Test your own mirrors! mark cowan   02/02/09 10:31 PM Re: Test your own mirrors! Biff   02/03/09 02:33 AM Re: Test your own mirrors! The bear   02/03/09 03:18 AM Re: Test your own mirrors! mark cowan   02/03/09 10:39 PM Re: Test your own mirrors! Dennis Sakva   03/20/09 01:03 PM Re: Test your own mirrors! Gary Fuchs   03/20/09 01:28 PM Re: Test your own mirrors! Dennis Sakva   03/20/09 02:05 PM Re: Test your own mirrors! Gary Fuchs   03/20/09 03:04 PM Re: Test your own mirrors! mark cowan   03/20/09 08:21 PM Re: Test your own mirrors! Dennis Sakva   03/21/09 08:01 AM Re: Test your own mirrors! Bart Wide   06/23/09 09:06 AM Re: Test your own mirrors! neo   06/23/09 09:52 AM Re: Test your own mirrors! Bart Wide   06/23/09 02:53 PM Re: Test your own mirrors! Gary Fuchs   06/23/09 03:50 PM Re: Test your own mirrors! Bart Wide   06/24/09 01:03 AM Re: Test your own mirrors! Bart Wide   06/24/09 01:02 PM Re: Test your own mirrors! Gary Fuchs   06/24/09 02:44 PM Re: Test your own mirrors! neo   06/24/09 04:02 PM Re: Test your own mirrors! Biff   06/24/09 04:17 PM Re: Test your own mirrors! rwiederrich   06/24/09 05:43 PM Re: Test your own mirrors! mark cowan   06/25/09 12:16 AM Re: Test your own mirrors! Bart Wide   06/25/09 06:03 AM Re: Test your own mirrors! Gary Fuchs   06/26/09 07:19 PM Re: Test your own mirrors! Bart Wide   06/27/09 03:34 AM Re: Test your own mirrors! Bart Wide   06/25/09 06:04 AM Re: Test your own mirrors! Bart Wide   06/25/09 06:05 AM Re: Test your own mirrors! neo   06/24/09 06:00 PM Re: Test your own mirrors! Bart Wide   06/24/09 04:21 PM Re: Test your own mirrors! neo   06/24/09 01:14 PM Re: Test your own mirrors! neo   06/23/09 03:16 PM Re: Test your own mirrors! mark cowan   02/01/09 05:43 PM Re: Test your own mirrors! Gary Fuchs   02/02/09 12:19 PM Re: Test you own mirrors! Gary Fuchs   05/28/08 09:01 PM Re: Test you own mirrors! Mitchell   05/28/08 10:45 PM Re: Test you own mirrors! Gary Fuchs   05/29/08 11:17 AM Re: Test you own mirrors! Mitchell   05/30/08 08:16 AM Re: Test you own mirrors! ken scharf   05/29/08 12:50 PM LED stuff dave b   05/29/08 02:11 PM Re: LED stuff Alan A.   06/05/08 01:44 AM Re: LED stuff mark cowan   06/05/08 03:18 AM Re: LED stuff Alan A.   06/05/08 11:50 AM Foucault tester questions ken scharf   06/09/08 10:23 AM Re: Foucault tester questions mark cowan   06/09/08 04:02 PM Re: Foucault tester questions Chriske   06/23/08 01:46 AM Re: Foucault tester questions Gary Fuchs   06/23/08 08:57 AM Re: Foucault tester questions mark cowan   06/23/08 06:08 PM Re: Foucault tester questions DAVIDG   06/23/08 08:07 PM Re: Foucault tester questions colinsk   06/24/08 12:41 AM Re: Foucault tester questions DAVIDG   06/24/08 09:54 AM Re: Foucault tester questions mark cowan   06/24/08 04:38 PM Re: Foucault tester questions grinder65   07/03/08 08:52 PM Re: Foucault tester questions grinder65   07/03/08 08:54 PM Re: Foucault tester questions DAVIDG   07/04/08 01:18 AM Re: Foucault tester questions grinder65   07/04/08 09:14 AM Re: Foucault tester questions DAVIDG   07/04/08 10:14 AM Re: Test your own mirrors! Don W   07/04/08 10:17 AM Re: Test your own mirrors! dave b   07/14/08 11:49 PM Re: Test your own mirrors! Gary Fuchs   09/28/08 08:12 PM Re: Test your own mirrors! Biff   09/28/08 08:43 PM Re: Test your own mirrors! Gary Fuchs   09/29/08 09:40 AM Re: Test your own mirrors! Biff   09/30/08 11:35 PM Re: Test your own mirrors! Gary Fuchs   10/01/08 03:56 PM Re: Test your own mirrors! Mark Harry   10/02/08 08:35 AM Re: Test your own mirrors! Spoonsize   09/30/08 12:21 PM Re: LED stuff Mark Harry   06/05/08 06:47 AM more LED stuff dave b   05/29/08 02:21 PM Re: LED stuff ken scharf   05/29/08 02:14 PM Re: LED stuff Gary Fuchs   05/29/08 02:33 PM Re: Test you own mirrors! The bear   05/28/08 09:38 PM Re: Test you own mirrors! RS67Man   05/28/08 09:37 PM Re: Test you own mirrors! rwiederrich   05/28/08 08:17 PM Re: Test you own mirrors! rwiederrich   05/28/08 08:19 PM Re: Test you own mirrors! Mitchell   05/28/08 08:33 PM Re: Test you own mirrors! The bear   05/28/08 08:41 PM Re: Test you own mirrors! Jarad   05/28/08 03:23 PM Re: Test you own mirrors! The bear   05/28/08 04:08 PM Re: Test you own mirrors! ken scharf   05/28/08 04:21 PM Re: Test you own mirrors! Mitchell   05/28/08 04:59 PM Re: Test you own mirrors! Sean Cunneen   05/28/08 05:25 PM Re: Test you own mirrors! wirenut   05/28/08 07:39 PM Re: Test you own mirrors! dave b   05/28/08 10:49 PM Re: Test you own mirrors! scopemankit   08/12/09 04:52 AM Re: Test you own mirrors! rwiederrich   09/08/09 10:18 PM Re: Test you own mirrors! Biff   09/08/09 11:22 PM Re: Test you own mirrors! rwiederrich   09/08/09 11:36 PM Re: Test you own mirrors! scopemankit   08/12/09 04:57 AM Re: Test you own mirrors! yosemitesamiam   11/03/08 12:27 PM Re: Test you own mirrors! DAVIDG   11/03/08 08:43 PM Re: Test you own mirrors! Biff   11/03/08 09:09 PM Re: Test you own mirrors! yosemitesamiam   11/04/08 12:01 AM Re: Test you own mirrors! yosemitesamiam   11/04/08 12:06 AM Re: Test you own mirrors! mark cowan   11/04/08 12:23 AM Re: Test you own mirrors! yosemitesamiam   11/04/08 01:06 AM Re: Test you own mirrors! yosemitesamiam   11/04/08 02:02 AM Re: Test you own mirrors! madrian   11/06/08 07:58 PM Re: Test you own mirrors! yosemitesamiam   11/09/08 12:40 AM Re: Test you own mirrors! Biff   11/06/08 02:03 PM Re: Test you own mirrors! madrian   11/03/08 08:02 PM Re: Test you own mirrors! greenglass   11/03/08 06:54 PM Re: Test you own mirrors! yosemitesamiam   11/03/08 11:21 AM Re: Test you own mirrors! ken scharf   05/29/08 08:11 AM Re: Test you own mirrors! Darren Drake   05/29/08 08:45 AM Re: Test you own mirrors! Mitchell   05/29/08 09:08 AM Re: Test you own mirrors! Chriske   05/29/08 11:07 AM Re: Test you own mirrors! mark cowan   05/30/08 01:56 AM Re: Test you own mirrors! Chriske   05/30/08 10:56 AM Re: Test you own mirrors! mark cowan   05/31/08 08:11 AM Re: Test you own mirrors! ken scharf   05/30/08 11:07 AM Re: Test you own mirrors! half meter   05/30/08 07:07 PM Re: Test you own mirrors! mark cowan   05/31/08 08:13 AM Re: Test you own mirrors! Chriske   05/31/08 08:17 AM Re: Test you own mirrors! Gary Fuchs   05/31/08 10:48 AM Re: Test you own mirrors! ken scharf   05/31/08 11:22 AM Re: Test you own mirrors! half meter   05/31/08 02:49 PM Re: Test you own mirrors! Mitchell   05/29/08 11:04 PM Re: Test you own mirrors! rwiederrich   05/29/08 02:59 PM Re: Test you own mirrors! The bear   05/29/08 09:02 PM Re: Test you own mirrors! jcham21   05/29/08 09:20 AM Re: Test you own mirrors! greenglass   05/29/08 10:16 AM Re: Test you own mirrors! Don W   05/29/08 10:28 AM Re: Test you own mirrors! The bear   05/29/08 12:26 AM Re: Test you own mirrors! dave b   05/29/08 01:24 AM Re: Test you own mirrors! The bear   05/29/08 12:22 AM Re: Test you own mirrors! The bear   05/28/08 07:46 PM Re: Test you own mirrors! jcham21   05/28/08 08:33 PM Re: Test you own mirrors! Mitchell   05/28/08 10:51 PM Re: Test you own mirrors! The bear   05/28/08 07:17 PM Re: Test you own mirrors! ken scharf   05/28/08 07:34 PM Extra information 13 registered and 8 anonymous users are browsing this forum. Moderator:  Don W, Mike I. 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