[Laser] Stepper motor control of laser communication unit

[vincent coppola]

I think it was brought up before, but how about
telescope GOTO mounts. I don't know the exact pointing
requirements here, but for star pointing I believe
they are accurate in the arc-second range with good
repeatability.

I picked up a 60mm refractor at a surplus store with
software included at a very reasonable price. The
tracking used for celestial object tracking which
compensates for earth rotation, could be disabled and
makes it usable in terrestrial pointing.

Alt-az mounts are preferred in this app., equatorial
mounts preferred for deepsky astrophotography and 
polar tracking, to eliminate field rotation.

Vince N1VC


--- WA2BPBPEwawapbpeninfoblvdet> wrote:

> Newport Corp. also sold these a few years back
> (haven't had a chance to
> check their website recently); would mount directly
> into a standard
> micrometer clamp.  I think they also had a knob on
> the end for manual
> adadjusment The (tiny) stepper motor drove either an
> 80 or 100 tptpicrew.
> 
> Tom - WA2BPBPE> 
> kdkds wrote:
> 
> > Hi Kerry,
> >
> > Exactly what I have been trying to get off the
> ground. Manual
> > positioning has not been very successful, unless
> you have infinite
> > patience.
> >
> > I wasn't aware there is a stepper replacement for
> micrometer drives.
> >
> > I have been saving parts and pieces toward that
> goal, but this sounds
> > like a better approach.
> >
> > I have had good experiences with PC express board
> service. If there is
> >   some interest I can do a board layout. I don't
> have any other CAD
> > resources.
> >
> > If you get a document together I would like to
> receive a copy.
> >
> > Mike KDKDS
> > _______________________________________________
> > Laser mailing list
> > Laser at mailman.qtqthet
> > hthttp/mailman.qtqthet/mailman/lilistinfoaser
> 
> _______________________________________________
> Laser mailing list
> Laser at mailman.qtqthet
> hthttp/mailman.qtqthet/mailman/lilistinfoaser
> 


		
_______________________________
Do you Yahoo!?
Declare Yourself - Register online to vote today!
http://vote.yahoo.com