DFM Engineering, Inc.
1035 Delaware Ave. Unit D
Longmont, CO 80501
Phone: 303-678-8143
Fax: 303-772-9411

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Siderostats & Coeleostats |
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DFM Engineering has provided five siderostats mounting 0.5 meter aperture flat
mirrors. These have been used for the JPL/Keck test bed interferometer and have extremely low jitter in
the axis motion and in mirror piston. We have also provided drives for larger systems.
Features:
Extremely low jitter
4 degrees per second axes motion
Mirror front surface located precisely at the intersection of the axes
On axis 1 arc second resolution encoders
Axes fiducials
Computer control system
Coeleostats: A ceoleostat is typically a siderostat, but the word is poorly defined. The name may
also be used to describe a beam director.
Configurations Summary
Heliostats
Beam Directors
Electro-Optical-Mechanical Systems™ (EOMS™)
Gimbals
Satellite Trackers
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