Re: [ATM] Optical Mouse for shaft encoders.

["Jan Grecner" <jan.grecner@telecom.cz>]

Bonjour Bill.

Before by two years I have done it myself experiment with Optical mouse used 
as shaft encoders for RA and DEC senzore.



On principle that function - but repeatability of measurements there's not 
satisfactory.

I am performed a lot of tests in practice and in laboratory. Shown here test 
result:



Attainable accuracy (exactness) for ten times of guiding was in the range of 
1 arc-degree.



Info detailed (the paper is in French *.PDF) find here

http://web.iol.cz/elektro-metal/navi-fr-1.pdf

see chapter 2.2, Fig 4 - 8.



Recommend to look-in electronics modulus NAVIGATOR and our SW for evaluation 
(semi-automatic) of P.E. - FFT.



Regards

Jan



----- Original Message ----- 
From: "Bill Hollenbach" <wjh1@absamail.co.za>
To: <atm@atmlist.net>
Sent: Thursday, April 06, 2006 6:24 AM
Subject: [ATM] Optical Mouse for shaft encoders.


Can Optical mouse be used as shaft encoders for RA and DEC sensors??
Those who know, please correspond directly to me as well
Peace.
Bill Hollenbach
AstronomysaŠ Est. 1983
Astronomer @ Rhino and Lion Nature Reserve
Past Council Member ASSA
Past Cape Center Committee member
Founder Member of the Cederberg Observatory
Cell:            083 227 3144
Email:         wjh1@absamail.co.za
Protect our dark skies, it is our African Heritage
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