[ATM] Gimbaled Secondary mirror

[<atm@hudler.org>]

Hi all,

I'm working on a design to gimbal our secondary mirror for active optics.
Plus the design includes of a movable ram to allow for a wide range of back
focus settings (8 to 25 inches) with a precision of 5 microns over a 5 cm
travel. 

 

I'm looking for ideas on a gimbal that will allow a 12 minute tip/tilt
without translation. I would like this to work without any projections
larger than the secondary mirror however; there is 10.8 inch diameter baffle
that surrounds all this. 

 

Any pivot joints will be using CFlex bearings and I hope to be able to drive
the tip/tilt with a couple of PI LV Piezo Actuators. 

 

Optical specs on the system are here if you're interested.

 

http://www.lonestarobservatory.org/Website/WebPage.aspx?Page=Optics

 

Trying to keep the cost below $8000.

 

 

Thanks,

Jack

 

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