... in ... respond ... appears that ... zones ... James, I took 1 set of readings and the k.e. and ronchi images tonight. It looks like the edge is coming down...
... in ... respond ... appears that ... zones ... I'm posting a new photo of the 5o% aluminum figuring lap I'm using. This photo illustrates the condition of...
... You are absolutely right. It's not un-common for the center to lag after you get a significant amount of correction into the mirror. We see this all the ...
... It ... after you ... all the ... see that developing the curve is kind of ... curve ... James, You are absolutely correct with the "herding cattle"...
... It's the edge correction moving along ahead of the center correction. This is ok. We can deal with the center easily. ... The short answer is, because it...
... wrote: Using the cattle analogy, If any cattle wander off the ... the former ... Ok James, Thanks for the explanation as I want to be clear on just what...
John: I'm off to work right now. I'll study your images today and send the next set of runs. We're making good progress but we have to add time on the very ...
John: Quick question: The graph for 9-30 looks identical to the graph for 9-27. Did you accidentally upload the same file twice? James James Mulherin Optical...
... This is correct. I can see the progress you've made adding correction to the center in the most recent Ronchi image. We do need to do something about that...
... 9-27. ... There was something weird happening every time I uploaded that image. On my desktop the image and title were correct, but when it was uploaded...
Just a quick note to encourage y'all to keep these discussions going. I have no idea how many people are being helped right now, but having the discussions, ...
... going. I ... discussions, ... future. ... as when ... the glass. ... Tom, You are certainly correct with your accessment of this figuring project. I have a...
... I'm glad you're finding the discussion interesting. This project is turning into a pretty good example of how a mirror figuring project develops. There are...
... Hats off to you too. You're doing all of the work and providing the pictures to document the project. It would be more of a challenge without the pictures....
... twice. ... smooth, ... with the ... as we ... Hello James, I'm finishing up the runs you've prescribed. Just for the record, since I'd had some trouble...
John: This is interesting. The difference between the behavior of the 50% lap and the 33% lap is a bit puzzling. You may be right about the temperature ...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the atm_free group. File : /John A's...
atm_free@yahoogroups....
Oct 8, 2004 6:39 am
4193
... lap and ... temperature ... behavior ... the lap ... Ok James, I've posted the latest surface error graph(10-7-04). I've also taken photos of the ronchi...
John: Thanks for the images and graph. I see good progress in the images and nothing that causes me concern. The plot is a bit puzzling. I'll study the new...
... I've studied you images and graph. The curve is starting to look "parabolic" in both test images. As the curve develops you will find that errors will hide...
... wrote: The curve is starting to look "parabolic" ... errors will ... them in ... error in ... won't change ... slow things ... Hi James, I'm looking...
... I spent a good four months making my first mirror, an 8" F/4.5. I started in the bedroom, moved to a barrel in the kitchen and for a short while, a home ...
... It's very ... use all ... with ... runs. ... 1". ... talking ... James, Headline in Burbank, IL now reads "EXTRA-EXTRA-READ ALL ABOUT IT! JOHN A HAS BRAIN...
John: That's Ok. I think we should be fine. You can make center and edge correcting runs with the 33% tool. In fact, if the mirror were faster we would have to...
Hey group: I have put another blemished 18" F/4.5 Torus mirror up for auction on eBay. See below for details. I've capped the auction by applying a Buy-it-Now ...
Said mirror seems tempting. How much does it weigh? ... From: James Mulherin To: Torusmirrorgroup ; Obsessionusers ; atm_free@yahoogroups.com Sent: Sunday,...
... faster we ... there. I ... hour west ... drive over ... James, I'd love to come for a visit-Lord knows I could use a little vacation from my job and all...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the atm_free group. File : /John A's...
atm_free@yahoogroups....
Oct 11, 2004 5:06 am
4204
John: I Thanks for the new images. It looks like we have some minor zones developing from the small tool runs. I'll study them and get back to you later today...
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