Today’s sophisticated imaging systems include color filter wheels (asymmetrical weight distribution), off-axis guiders, rotators, corrective optics, and CCD cameras. Together they present a formidable group of equipment that must be moved with micron accuracy and no image shift to achieve the finest results. The Atlas Digital Focuser is up to the task; an engineering pièce de résistance with unique solutions to achieving critical focus with heavy loads.
The ZTA™ is an FLI adapter design that eliminates the common deficiencies found in most astronomical adapters. When you use the ZTA™ you will never experience tilted components, marred adapters, or wobbly interfaces!
The ZTA™ adapter system employs a circular spring that evenly distributes the pressure of three set screws against the ZTA™ dovetailed surface. The resulting clamping force between the two machined surfaces results in zero tilt, zero adapter marring and a complete elimination of problems associated with loose connections. The ZTA™ adapter can be machined to fit nearly any type of camera, color filter wheel or telescope.
ZTA™ - featured in the Atlas focuser and the CenterLine color filter wheel.
FLI's digital focusers are specifically designed for modern CCD imaging where the digital imaging system is mounted very close to correct focus. The thin designs allow focusing with short-travel optical designs.
All of our focusers are ASCOM compliant.
For critical focusing - use an FLI Focuser
Atlas Focuser Front
Atlas Focuser Side
Atlas Focuser Connections
ProLine CCD Camera, CenterLine Color Filter Wheel and Atlas Focuser with MicroLine CCD camera / guider
The production load test setup consists of an Atlas focuser horizontally mounted
to a fixed base and loaded with a ProLine camera at the end of a 10" long
aluminum tube. As the focuser is moved repeatedly in both directions, it comes
back to the same position every time. The displacement is measured by a dial
indicator with 0.0001" resolution, a close-up of the dial face is shown for
clearer viewing. Small step actuation at the end of the sequence highlights the
precision of the instrument.
Tested Under Extreme Conditions
Ice crystals form on the surface of the Atlas focuser after it was removed from
FLI's temperature chamber. The focuser handles operation in temperatures below
-25°C thanks to a high-performance low-temperature lubricant. Special
precautions are necessary for those cold nights, ice buildup must be in kept in
check in order to allow the focuser parts to move freely.
Zero Tilt Adapter Video
Join The Growing List of Telescope Manufacturers That Use the Atlas as a Precision Focuser
Current Images Featuring the Atlas Focuser
Adam Jesionkiewicz (Poland) ProLine PL16803 and Atlas Focuser
Roger Banks (UK) ProLine PL16803 and Atlas Focuser