[ATM] Re: Any Amateur Adaptive or Active Optics

["Greg Jones" <gregj888@comcast.net>]

I've been working on an Adaptive Optics system for a few years.  5 orders of correction with a 0-db bandwith of about 10 Hz and a loop time of better than 100 Hz.  Things have kind of stalled as I have been busy with "life" but most of the pieces work.  Science camer is based on a 1kx1k SITE chip for now.  

Have learned a lot along the way. Here is my 2 cents-
 1) Corrected radius 5-8 arc-sec (yep, small) from the guide star
 2) Natural guide star is not a general purpose solution, needs laser guide star 
 3) Have seen and touched a LGS system, forget about it.
 4) Below 12" fast tip/tilt is enought (maybe)


Here is the web site-  http://home.comcast.net/~dac20/dac_001.htm
There has been some progress, fencing the site in central OR, working on the telescope and cameras.  Will try to update the site in the next few weeks.

BTW: Adaptive optics are fast, 5 hz or better, for atmospherics.  Active optics are slow, 2 Hz or slower, and correct figure and alignment of the optical train. Adaptive can do some of the job for active and tracing but that eats up dynamic range. 

I will try to answer questions but you might want to email me as well as the list.  I don't get to read the list as much as I used to.

Greg Jones
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