RE: [ATM] Tracking Systems for Astrophotography

[Royston_Jeremy@emc.com]

Hello Art and all,
	The rotation of the earth is well known, but we have to compensate
for misalignment of the mount, atmospheric refraction, flexure of the
telescope and seeing. This means that we have to track a guide star
accurately, and correct the drive correspondingly. Suitably bright guide
stars are seldom.
It is a non-trivial project!

Best wishes, Jerry

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of
artbianconi@blast.net
Sent: Mittwoch, 22. September 2004 14:04
To: atm@atmlist.net
Subject: [ATM] Tracking Systems for Astrophotography


Mel, in a recent response to my earlier question, you intimated 
that the problems associated with tracking a moving object are 
difficult to resolve and costly. 

While they are not astronomers, others, EE's for the most part, 
are suggesting that the circuitry needed for accurate optical 
tracking in an x and y axis does not require a novel solution.

They based their responses on what I told them. They understand 
the motions of the earth. However, it may well be that I left out 
some piece of information that distorts the problem.

What makes this effort appear so formidable?

Thanks

Art Bianconi

This post and any attachments were tested before being sent and 
found to be virus free.
Our Norton-Symantic virus list is updated daily.



_______________________________________________
ATM mailing list http://www.atmlist.net/
_______________________________________________
ATM mailing list http://www.atmlist.net/