Re: [ATM] mechanical setting circles / computer program?

["David Harbour" <scarab2@cox.net>]

Dear Charles,

And all:

I have devised a wholly original method of producing setting circles with a 
beam trammel compass, that will allow you to infinitely divide a circle with 
UNBELIEVABLE ACCURACY. It is a new modification of a method of subdividing 
angles "hexigesimally". I provided my big Phoenix mount with declination 
circles that were very large, and easily readable, this way. If any of you 
would like a picture of an example of one of those declination circles (I 
subdivided them both down to five degree increments, and planned to add the 
one degree increments later) I have some very nice pictures of them on my 
hard drive. Please ask for them.

Usign a computer program to do it is fine; the trouble is, many printers 
will not print exactly equal increments in X and Y (exactly identical 
increments). I guarantee my method for producing uncannily accurately 
subdivided angular (declination cirles, or "Cs" as I call them; you will see 
why if you ask for the pictures) arcs with marked divisions. Takes a little 
bit of time, but what is atm-ing for? The old Albert Ingalls/Scientific 
American Telescope making books asserted (there is a quote in one of them, 
certainly) to the effect that telescope making is quite appropriately for 
"killing time". Ask for my help, Charles.

I think you, and others, will be delighted to find out that you can do 
something without a computer or a complicated machine, and be able to do it 
perfectly.

David
N9606H


----- Original Message ----- 
From: "j h" <quantemlp@hotmail.com>
To: <atm@atmlist.net>
Sent: Thursday, March 16, 2006 9:18 PM
Subject: [ATM] mechanical setting circles / computer program?


> Greetings,
>
> I am planning on using mechanical setting circles on my dob that Im
> building.  I have heard of, and came across mention of computer programs,
> simply designed, that will do the math for me so all i have to do is align
> to my setting circles and off I go.  Can anybody offer some information on
> this.  I even heard something about a tape measure????
>
> thanks
>
> Charles Federico
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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