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Home > Classifieds > Astromart Classifieds > Mounts - Equatorial > Classified #195894

For Sale: 6" 1/10 wave Heliostat, CNC machined, electronic tracking [SOLD]

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I am selling a custom, CNC machined aluminium heliostat. The system attaches to a standard surveyor's tripod (I can buy you one of these at cost if you need one ... they are reasonably priced)and uses a steering mirror and photoresistor system to guide the beam. The heliostat is friction driven by two motors, with closed loop feedback to keep the sun centered.

The mirror is a 2" thick 6" flat, 1/10 wave, enhanced coated. The flat is 1/10 wave polished on both sides and in theory, you could saw the flat into two.

I have moved up to a 12.5" heliostat of similar design. This 6" drive needs an upgrade to geared motors, as movement is too abrupt now; and the mirror needs balancing for accurate performance. Thus expect to do some twiddling with this heliostat before it performs to its potential.

This would be a great small heliostat for anyone interested in building either a spectrohelioscope or a solar telescope using filters by Daystar or Coronado.

Price: $250 + shipping


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